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fix bug where first selection snaps to lines
[st.git] / st.c
diff --git a/st.c b/st.c
index 79a4e0a..4a505b5 100644 (file)
--- a/st.c
+++ b/st.c
@@ -27,6 +27,7 @@
 #include <X11/cursorfont.h>
 #include <X11/keysym.h>
 #include <X11/Xft/Xft.h>
+#include <X11/XKBlib.h>
 #include <fontconfig/fontconfig.h>
 #include <wchar.h>
 
@@ -62,22 +63,19 @@ char *argv0;
 #define XK_NO_MOD     0
 #define XK_SWITCH_MOD (1<<13)
 
-#define REDRAW_TIMEOUT (80*1000) /* 80 ms */
-
 /* macros */
 #define MIN(a, b)  ((a) < (b) ? (a) : (b))
 #define MAX(a, b)  ((a) < (b) ? (b) : (a))
 #define LEN(a)     (sizeof(a) / sizeof(a)[0])
 #define DEFAULT(a, b)     (a) = (a) ? (a) : (b)
 #define BETWEEN(x, a, b)  ((a) <= (x) && (x) <= (b))
-#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f))
+#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
 #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
 #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
 #define LIMIT(x, a, b)    (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
 #define IS_SET(flag) ((term.mode & (flag)) != 0)
-#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
-#define CEIL(x) (((x) != (int) (x)) ? (x) + 1 : (x))
+#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_nsec-t2.tv_nsec)/1E6)
 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
 
 #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
@@ -85,20 +83,23 @@ char *argv0;
 #define TRUERED(x)       (((x) & 0xff0000) >> 8)
 #define TRUEGREEN(x)     (((x) & 0xff00))
 #define TRUEBLUE(x)      (((x) & 0xff) << 8)
+#define TLINE(y)       ((y) < term.scr ? term.hist[((y) + term.histi - term.scr \
+                       + histsize + 1) % histsize] : term.line[(y) - term.scr])
 
 
-#define VT102ID "\033[?6c"
-
 enum glyph_attribute {
        ATTR_NULL      = 0,
-       ATTR_REVERSE   = 1,
-       ATTR_UNDERLINE = 2,
-       ATTR_BOLD      = 4,
-       ATTR_ITALIC    = 8,
-       ATTR_BLINK     = 16,
-       ATTR_WRAP      = 32,
-       ATTR_WIDE      = 64,
-       ATTR_WDUMMY    = 128,
+       ATTR_BOLD      = 1 << 0,
+       ATTR_FAINT     = 1 << 1,
+       ATTR_ITALIC    = 1 << 2,
+       ATTR_UNDERLINE = 1 << 3,
+       ATTR_BLINK     = 1 << 4,
+       ATTR_REVERSE   = 1 << 5,
+       ATTR_INVISIBLE = 1 << 6,
+       ATTR_STRUCK    = 1 << 7,
+       ATTR_WRAP      = 1 << 8,
+       ATTR_WIDE      = 1 << 9,
+       ATTR_WDUMMY    = 1 << 10,
 };
 
 enum cursor_movement {
@@ -113,27 +114,27 @@ enum cursor_state {
 };
 
 enum term_mode {
-       MODE_WRAP        = 1,
-       MODE_INSERT      = 2,
-       MODE_APPKEYPAD   = 4,
-       MODE_ALTSCREEN   = 8,
-       MODE_CRLF        = 16,
-       MODE_MOUSEBTN    = 32,
-       MODE_MOUSEMOTION = 64,
-       MODE_REVERSE     = 128,
-       MODE_KBDLOCK     = 256,
-       MODE_HIDE        = 512,
-       MODE_ECHO        = 1024,
-       MODE_APPCURSOR   = 2048,
-       MODE_MOUSESGR    = 4096,
-       MODE_8BIT        = 8192,
-       MODE_BLINK       = 16384,
-       MODE_FBLINK      = 32768,
-       MODE_FOCUS       = 65536,
-       MODE_MOUSEX10    = 131072,
-       MODE_MOUSEMANY   = 262144,
-       MODE_BRCKTPASTE  = 524288,
-       MODE_PRINT       = 1048576,
+       MODE_WRAP        = 1 << 0,
+       MODE_INSERT      = 1 << 1,
+       MODE_APPKEYPAD   = 1 << 2,
+       MODE_ALTSCREEN   = 1 << 3,
+       MODE_CRLF        = 1 << 4,
+       MODE_MOUSEBTN    = 1 << 5,
+       MODE_MOUSEMOTION = 1 << 6,
+       MODE_REVERSE     = 1 << 7,
+       MODE_KBDLOCK     = 1 << 8,
+       MODE_HIDE        = 1 << 9,
+       MODE_ECHO        = 1 << 10,
+       MODE_APPCURSOR   = 1 << 11,
+       MODE_MOUSESGR    = 1 << 12,
+       MODE_8BIT        = 1 << 13,
+       MODE_BLINK       = 1 << 14,
+       MODE_FBLINK      = 1 << 15,
+       MODE_FOCUS       = 1 << 16,
+       MODE_MOUSEX10    = 1 << 17,
+       MODE_MOUSEMANY   = 1 << 18,
+       MODE_BRCKTPASTE  = 1 << 19,
+       MODE_PRINT       = 1 << 20,
        MODE_MOUSE       = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
                          |MODE_MOUSEMANY,
 };
@@ -179,8 +180,7 @@ typedef unsigned long ulong;
 typedef unsigned short ushort;
 
 typedef XftDraw *Draw;
-typedef XftColor Colour;
-typedef Colormap Colourmap;
+typedef XftColor Color;
 
 typedef struct {
        char c[UTF_SIZ]; /* character code */
@@ -199,14 +199,14 @@ typedef struct {
 } TCursor;
 
 /* CSI Escape sequence structs */
-/* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
+/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
 typedef struct {
        char buf[ESC_BUF_SIZ]; /* raw string */
        int len;               /* raw string length */
        char priv;
        int arg[ESC_ARG_SIZ];
        int narg;              /* nb of args */
-       char mode;
+       char mode[2];
 } CSIEscape;
 
 /* STR Escape sequence structs */
@@ -225,6 +225,9 @@ typedef struct {
        int col;      /* nb col */
        Line *line;   /* screen */
        Line *alt;    /* alternate screen */
+       Line *hist;   /* history buffer */
+       int histi;    /* history index */
+       int scr;      /* scroll back */
        bool *dirty;  /* dirtyness of lines */
        TCursor c;    /* cursor */
        int top;      /* top    scroll limit */
@@ -241,7 +244,7 @@ typedef struct {
 /* Purely graphic info */
 typedef struct {
        Display *dpy;
-       Colourmap cmap;
+       Colormap cmap;
        Window win;
        Drawable buf;
        Atom xembed, wmdeletewin, netwmname, netwmpid;
@@ -259,6 +262,7 @@ typedef struct {
        int ch; /* char height */
        int cw; /* char width  */
        char state; /* focus, redraw, visible */
+       int cursor; /* cursor style */
 } XWindow;
 
 typedef struct {
@@ -292,11 +296,11 @@ typedef struct {
                int x, y;
        } nb, ne, ob, oe;
 
-       char *clip;
+       char *primary, *clipboard;
        Atom xtarget;
        bool alt;
-       struct timeval tclick1;
-       struct timeval tclick2;
+       struct timespec tclick1;
+       struct timespec tclick2;
 } Selection;
 
 typedef union {
@@ -314,10 +318,15 @@ typedef struct {
 } Shortcut;
 
 /* function definitions used in config.h */
+static void clipcopy(const Arg *);
 static void clippaste(const Arg *);
+static void kscrolldown(const Arg *);
+static void kscrollup(const Arg *);
 static void numlock(const Arg *);
 static void selpaste(const Arg *);
 static void xzoom(const Arg *);
+static void xzoomabs(const Arg *);
+static void xzoomreset(const Arg *);
 static void printsel(const Arg *);
 static void printscreen(const Arg *) ;
 static void toggleprinter(const Arg *);
@@ -340,14 +349,14 @@ typedef struct {
 
 /* Drawing Context */
 typedef struct {
-       Colour col[MAX(LEN(colorname), 256)];
+       Color col[MAX(LEN(colorname), 256)];
        Font font, bfont, ifont, ibfont;
        GC gc;
 } DC;
 
 static void die(const char *, ...);
 static void draw(void);
-static void redraw(int);
+static void redraw(void);
 static void drawregion(int, int, int, int);
 static void execsh(void);
 static void sigchld(int);
@@ -357,6 +366,7 @@ static void csidump(void);
 static void csihandle(void);
 static void csiparse(void);
 static void csireset(void);
+static int eschandle(uchar ascii);
 static void strdump(void);
 static void strhandle(void);
 static void strparse(void);
@@ -373,6 +383,7 @@ static void tdeletechar(int);
 static void tdeleteline(int);
 static void tinsertblank(int);
 static void tinsertblankline(int);
+static int tlinelen(int);
 static void tmoveto(int, int);
 static void tmoveato(int, int);
 static void tnew(int, int);
@@ -380,9 +391,9 @@ static void tnewline(int);
 static void tputtab(int);
 static void tputc(char *, int);
 static void treset(void);
-static int tresize(int, int);
-static void tscrollup(int, int);
-static void tscrolldown(int, int);
+static void tresize(int, int);
+static void tscrollup(int, int, bool);
+static void tscrolldown(int, int, bool);
 static void tsetattr(int *, int);
 static void tsetchar(char *, Glyph *, int, int);
 static void tsetscroll(int, int);
@@ -402,6 +413,7 @@ static void ttyread(void);
 static void ttyresize(void);
 static void ttysend(char *, size_t);
 static void ttywrite(const char *, size_t);
+static void tstrsequence(uchar c);
 
 static void xdraws(char *, Glyph, int, int, int, int);
 static void xhints(void);
@@ -441,7 +453,7 @@ static void selclear(XEvent *);
 static void selrequest(XEvent *);
 
 static void selinit(void);
-static void selsort(void);
+static void selnormalize(void);
 static inline bool selected(int, int);
 static char *getsel(void);
 static void selcopy(void);
@@ -476,7 +488,11 @@ static void (*handler[LASTEvent])(XEvent *) = {
        [MotionNotify] = bmotion,
        [ButtonPress] = bpress,
        [ButtonRelease] = brelease,
-       [SelectionClear] = selclear,
+/*
+ * Uncomment if you want the selection to disappear when you select something
+ * different in another window.
+ */
+/*     [SelectionClear] = selclear, */
        [SelectionNotify] = selnotify,
        [SelectionRequest] = selrequest,
 };
@@ -501,6 +517,7 @@ static int oldbutton = 3; /* button event on startup: 3 = release */
 
 static char *usedfont = NULL;
 static double usedfontsize = 0;
+static double defaultfontsize = 0;
 
 static uchar utfbyte[UTF_SIZ + 1] = {0x80,    0, 0xC0, 0xE0, 0xF0};
 static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
@@ -518,6 +535,7 @@ enum {
 typedef struct {
        XftFont *font;
        int flags;
+       long unicodep;
 } Fontcache;
 
 /* Fontcache is an array now. A new font will be appended to the array. */
@@ -631,11 +649,13 @@ utf8validate(long *u, size_t i) {
 
 static void
 selinit(void) {
-       memset(&sel.tclick1, 0, sizeof(sel.tclick1));
-       memset(&sel.tclick2, 0, sizeof(sel.tclick2));
+       clock_gettime(CLOCK_MONOTONIC, &sel.tclick1);
+       clock_gettime(CLOCK_MONOTONIC, &sel.tclick2);
        sel.mode = 0;
+       sel.snap = 0;
        sel.ob.x = -1;
-       sel.clip = NULL;
+       sel.primary = NULL;
+       sel.clipboard = NULL;
        sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
        if(sel.xtarget == None)
                sel.xtarget = XA_STRING;
@@ -657,9 +677,23 @@ y2row(int y) {
        return LIMIT(y, 0, term.row-1);
 }
 
+static int tlinelen(int y) {
+       int i = term.col;
+
+       if(TLINE(y)[i - 1].mode & ATTR_WRAP)
+                       return i;
+
+       while(i > 0 && TLINE(y)[i - 1].c[0] == ' ')
+               --i;
+
+       return i;
+}
+
 static void
-selsort(void) {
-       if(sel.ob.y == sel.oe.y) {
+selnormalize(void) {
+       int i;
+
+       if(sel.ob.y == sel.oe.y || sel.type == SEL_RECTANGULAR) {
                sel.nb.x = MIN(sel.ob.x, sel.oe.x);
                sel.ne.x = MAX(sel.ob.x, sel.oe.x);
        } else {
@@ -668,6 +702,18 @@ selsort(void) {
        }
        sel.nb.y = MIN(sel.ob.y, sel.oe.y);
        sel.ne.y = MAX(sel.ob.y, sel.oe.y);
+
+       selsnap(sel.snap, &sel.nb.x, &sel.nb.y, -1);
+       selsnap(sel.snap, &sel.ne.x, &sel.ne.y, +1);
+
+       /* expand selection over line breaks */
+       if (sel.type == SEL_RECTANGULAR)
+               return;
+       i = tlinelen(sel.nb.y);
+       if (i < sel.nb.x)
+               sel.nb.x = i;
+       if (tlinelen(sel.ne.y) <= sel.ne.x)
+               sel.ne.x = term.col - 1;
 }
 
 static inline bool
@@ -683,7 +729,9 @@ selected(int x, int y) {
 
 void
 selsnap(int mode, int *x, int *y, int direction) {
-       int i;
+       int newx, newy, xt, yt;
+       bool delim, prevdelim;
+       Glyph *gp, *prevgp;
 
        switch(mode) {
        case SNAP_WORD:
@@ -691,37 +739,38 @@ selsnap(int mode, int *x, int *y, int direction) {
                 * Snap around if the word wraps around at the end or
                 * beginning of a line.
                 */
+               prevgp = &TLINE(*y)[*x];
+               prevdelim = strchr(worddelimiters, prevgp->c[0]) != NULL;
                for(;;) {
-                       if(direction < 0 && *x <= 0) {
-                               if(*y > 0 && term.line[*y - 1][term.col-1].mode
-                                               & ATTR_WRAP) {
-                                       *y -= 1;
-                                       *x = term.col-1;
-                               } else {
+                       newx = *x + direction;
+                       newy = *y;
+                       if(!BETWEEN(newx, 0, term.col - 1)) {
+                               newy += direction;
+                               newx = (newx + term.col) % term.col;
+                               if (!BETWEEN(newy, 0, term.row - 1))
                                        break;
-                               }
-                       }
-                       if(direction > 0 && *x >= term.col-1) {
-                               if(*y < term.row-1 && term.line[*y][*x].mode
-                                               & ATTR_WRAP) {
-                                       *y += 1;
-                                       *x = 0;
-                               } else {
+
+                               if(direction > 0)
+                                       yt = *y, xt = *x;
+                               else
+                                       yt = newy, xt = newx;
+                               if(!(TLINE(yt)[xt].mode & ATTR_WRAP))
                                        break;
-                               }
                        }
 
-                       if(term.line[*y][*x+direction].mode & ATTR_WDUMMY) {
-                               *x += direction;
-                               continue;
-                       }
+                       if (newx >= tlinelen(newy))
+                               break;
 
-                       if(strchr(worddelimiters,
-                                       term.line[*y][*x+direction].c[0])) {
+                       gp = &TLINE(newy)[newx];
+                       delim = strchr(worddelimiters, gp->c[0]) != NULL;
+                       if(!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
+                                       || (delim && gp->c[0] != prevgp->c[0])))
                                break;
-                       }
 
-                       *x += direction;
+                       *x = newx;
+                       *y = newy;
+                       prevgp = gp;
+                       prevdelim = delim;
                }
                break;
        case SNAP_LINE:
@@ -733,32 +782,20 @@ selsnap(int mode, int *x, int *y, int direction) {
                *x = (direction < 0) ? 0 : term.col - 1;
                if(direction < 0 && *y > 0) {
                        for(; *y > 0; *y += direction) {
-                               if(!(term.line[*y-1][term.col-1].mode
+                               if(!(TLINE(*y-1)[term.col-1].mode
                                                & ATTR_WRAP)) {
                                        break;
                                }
                        }
                } else if(direction > 0 && *y < term.row-1) {
                        for(; *y < term.row; *y += direction) {
-                               if(!(term.line[*y][term.col-1].mode
+                               if(!(TLINE(*y)[term.col-1].mode
                                                & ATTR_WRAP)) {
                                        break;
                                }
                        }
                }
                break;
-       default:
-               /*
-                * Select the whole line when the end of line is reached.
-                */
-               if(direction > 0) {
-                       i = term.col;
-                       while(--i > 0 && term.line[*y][i].c[0] == ' ')
-                               /* nothing */;
-                       if(i > 0 && i < *x)
-                               *x = term.col - 1;
-               }
-               break;
        }
 }
 
@@ -771,16 +808,7 @@ getbuttoninfo(XEvent *e) {
 
        sel.oe.x = x2col(e->xbutton.x);
        sel.oe.y = y2row(e->xbutton.y);
-
-       if(sel.ob.y < sel.oe.y
-                       || (sel.ob.y == sel.oe.y && sel.ob.x < sel.oe.x)) {
-               selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
-               selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
-       } else {
-               selsnap(sel.snap, &sel.oe.x, &sel.oe.y, -1);
-               selsnap(sel.snap, &sel.ob.x, &sel.ob.y, +1);
-       }
-       selsort();
+       selnormalize();
 
        sel.type = SEL_REGULAR;
        for(type = 1; type < LEN(selmasks); ++type) {
@@ -793,71 +821,72 @@ getbuttoninfo(XEvent *e) {
 
 void
 mousereport(XEvent *e) {
-       int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
-           button = e->xbutton.button, state = e->xbutton.state,
-           len;
-       char buf[40];
-       static int ox, oy;
-
-       /* from urxvt */
-       if(e->xbutton.type == MotionNotify) {
-               if(x == ox && y == oy)
-                       return;
-               if(!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
-                       return;
-               /* MOUSE_MOTION: no reporting if no button is pressed */
-               if(IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
-                       return;
-
-               button = oldbutton + 32;
-               ox = x;
-               oy = y;
-       } else {
-               if(!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
-                       button = 3;
-               } else {
-                       button -= Button1;
-                       if(button >= 3)
-                               button += 64 - 3;
-               }
-               if(e->xbutton.type == ButtonPress) {
-                       oldbutton = button;
-                       ox = x;
-                       oy = y;
-               } else if(e->xbutton.type == ButtonRelease) {
-                       oldbutton = 3;
-                       /* MODE_MOUSEX10: no button release reporting */
-                       if(IS_SET(MODE_MOUSEX10))
-                               return;
-                       if (button == 64 || button == 65)
-                               return;
-               }
-       }
-
-       if(!IS_SET(MODE_MOUSEX10)) {
-               button += (state & ShiftMask   ? 4  : 0)
-                       + (state & Mod4Mask    ? 8  : 0)
-                       + (state & ControlMask ? 16 : 0);
-       }
-
-       len = 0;
-       if(IS_SET(MODE_MOUSESGR)) {
-               len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
-                               button, x+1, y+1,
-                               e->xbutton.type == ButtonRelease ? 'm' : 'M');
-       } else if(x < 223 && y < 223) {
-               len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
-                               32+button, 32+x+1, 32+y+1);
-       } else {
-               return;
-       }
-
-       ttywrite(buf, len);
+       return; // jason
+//     int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
+//         button = e->xbutton.button, state = e->xbutton.state,
+//         len;
+//     char buf[40];
+//     static int ox, oy;
+//
+//     /* from urxvt */
+//     if(e->xbutton.type == MotionNotify) {
+//             if(x == ox && y == oy)
+//                     return;
+//             if(!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
+//                     return;
+//             /* MOUSE_MOTION: no reporting if no button is pressed */
+//             if(IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
+//                     return;
+//
+//             button = oldbutton + 32;
+//             ox = x;
+//             oy = y;
+//     } else {
+//             if(!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
+//                     button = 3;
+//             } else {
+//                     button -= Button1;
+//                     if(button >= 3)
+//                             button += 64 - 3;
+//             }
+//             if(e->xbutton.type == ButtonPress) {
+//                     oldbutton = button;
+//                     ox = x;
+//                     oy = y;
+//             } else if(e->xbutton.type == ButtonRelease) {
+//                     oldbutton = 3;
+//                     /* MODE_MOUSEX10: no button release reporting */
+//                     if(IS_SET(MODE_MOUSEX10))
+//                             return;
+//                     if (button == 64 || button == 65)
+//                             return;
+//             }
+//     }
+//
+//     if(!IS_SET(MODE_MOUSEX10)) {
+//             button += (state & ShiftMask   ? 4  : 0)
+//                     + (state & Mod4Mask    ? 8  : 0)
+//                     + (state & ControlMask ? 16 : 0);
+//     }
+//
+//     len = 0;
+//     if(IS_SET(MODE_MOUSESGR)) {
+//             len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
+//                             button, x+1, y+1,
+//                             e->xbutton.type == ButtonRelease ? 'm' : 'M');
+//     } else if(x < 223 && y < 223) {
+//             len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
+//                             32+button, 32+x+1, 32+y+1);
+//     } else {
+//             return;
+//     }
+//
+//     ttywrite(buf, len);
 }
 
 void
 bpress(XEvent *e) {
-       struct timeval now;
+       struct timespec now;
        Mousekey *mk;
 
        if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
@@ -874,7 +903,7 @@ bpress(XEvent *e) {
        }
 
        if(e->xbutton.button == Button1) {
-               gettimeofday(&now, NULL);
+               clock_gettime(CLOCK_MONOTONIC, &now);
 
                /* Clear previous selection, logically and visually. */
                selclear(NULL);
@@ -894,9 +923,7 @@ bpress(XEvent *e) {
                } else {
                        sel.snap = 0;
                }
-               selsnap(sel.snap, &sel.ob.x, &sel.ob.y, -1);
-               selsnap(sel.snap, &sel.oe.x, &sel.oe.y, +1);
-               selsort();
+               selnormalize();
 
                /*
                 * Draw selection, unless it's regular and we don't want to
@@ -914,7 +941,7 @@ bpress(XEvent *e) {
 char *
 getsel(void) {
        char *str, *ptr;
-       int x, y, bufsize, size, i, ex;
+       int y, bufsize, size, lastx, linelen;
        Glyph *gp, *last;
 
        if(sel.ob.x == -1)
@@ -925,16 +952,21 @@ getsel(void) {
 
        /* append every set & selected glyph to the selection */
        for(y = sel.nb.y; y < sel.ne.y + 1; y++) {
-               gp = &term.line[y][0];
-               last = &gp[term.col-1];
+               linelen = tlinelen(y);
 
-               while(last >= gp && !(selected(last - gp, y) &&
-                                     strcmp(last->c, " ") != 0)) {
-                       --last;
+               if(sel.type == SEL_RECTANGULAR) {
+                       gp = &TLINE(y)[sel.nb.x];
+                       lastx = sel.ne.x;
+               } else {
+                       gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
+                       lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
                }
+               last = &TLINE(y)[MIN(lastx, linelen-1)];
+               while(last >= gp && last->c[0] == ' ')
+                       --last;
 
-               for(x = 0; gp <= last; x++, ++gp) {
-                       if(!selected(x, y) || (gp->mode & ATTR_WDUMMY))
+               for( ; gp <= last; ++gp) {
+                       if(gp->mode & ATTR_WDUMMY)
                                continue;
 
                        size = utf8len(gp->c);
@@ -951,23 +983,8 @@ getsel(void) {
                 * st.
                 * FIXME: Fix the computer world.
                 */
-               if(y < sel.ne.y && !(x > 0 && (gp-1)->mode & ATTR_WRAP))
+               if((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
                        *ptr++ = '\n';
-
-               /*
-                * If the last selected line expands in the selection
-                * after the visible text '\n' is appended.
-                */
-               if(y == sel.ne.y) {
-                       i = term.col;
-                       while(--i > 0 && term.line[y][i].c[0] == ' ')
-                               /* nothing */;
-                       ex = sel.ne.x;
-                       if(sel.nb.y == sel.ne.y && sel.ne.x < sel.nb.x)
-                               ex = sel.nb.x;
-                       if(i < ex)
-                               *ptr++ = '\n';
-               }
        }
        *ptr = 0;
        return str;
@@ -984,12 +1001,17 @@ selnotify(XEvent *e) {
        int format;
        uchar *data, *last, *repl;
        Atom type;
+       XSelectionEvent *xsev;
 
        ofs = 0;
+       xsev = (XSelectionEvent *)e;
+       if (xsev->property == None)
+           return;
        do {
-               if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
-                                       False, AnyPropertyType, &type, &format,
-                                       &nitems, &rem, &data)) {
+               if(XGetWindowProperty(xw.dpy, xw.win, xsev->property, ofs,
+                                       BUFSIZ/4, False, AnyPropertyType,
+                                       &type, &format, &nitems, &rem,
+                                       &data)) {
                        fprintf(stderr, "Clipboard allocation failed\n");
                        return;
                }
@@ -1025,11 +1047,25 @@ selpaste(const Arg *dummy) {
 }
 
 void
+clipcopy(const Arg *dummy) {
+       Atom clipboard;
+
+       if(sel.clipboard != NULL)
+               free(sel.clipboard);
+
+       if(sel.primary != NULL) {
+               sel.clipboard = xstrdup(sel.primary);
+               clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+               XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
+       }
+}
+
+void
 clippaste(const Arg *dummy) {
        Atom clipboard;
 
        clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
-       XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
+       XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
                        xw.win, CurrentTime);
 }
 
@@ -1045,7 +1081,8 @@ void
 selrequest(XEvent *e) {
        XSelectionRequestEvent *xsre;
        XSelectionEvent xev;
-       Atom xa_targets, string;
+       Atom xa_targets, string, clipboard;
+       char *seltext;
 
        xsre = (XSelectionRequestEvent *) e;
        xev.type = SelectionNotify;
@@ -1064,11 +1101,29 @@ selrequest(XEvent *e) {
                                XA_ATOM, 32, PropModeReplace,
                                (uchar *) &string, 1);
                xev.property = xsre->property;
-       } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
-               XChangeProperty(xsre->display, xsre->requestor, xsre->property,
-                               xsre->target, 8, PropModeReplace,
-                               (uchar *) sel.clip, strlen(sel.clip));
-               xev.property = xsre->property;
+       } else if(xsre->target == sel.xtarget || xsre->target == XA_STRING) {
+               /*
+                * xith XA_STRING non ascii characters may be incorrect in the
+                * requestor. It is not our problem, use utf8.
+                */
+               clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+               if(xsre->selection == XA_PRIMARY) {
+                       seltext = sel.primary;
+               } else if(xsre->selection == clipboard) {
+                       seltext = sel.clipboard;
+               } else {
+                       fprintf(stderr,
+                               "Unhandled clipboard selection 0x%lx\n",
+                               xsre->selection);
+                       return;
+               }
+               if(seltext != NULL) {
+                       XChangeProperty(xsre->display, xsre->requestor,
+                                       xsre->property, xsre->target,
+                                       8, PropModeReplace,
+                                       (uchar *)seltext, strlen(seltext));
+                       xev.property = xsre->property;
+               }
        }
 
        /* all done, send a notification to the listener */
@@ -1078,16 +1133,10 @@ selrequest(XEvent *e) {
 
 void
 xsetsel(char *str) {
-       /* register the selection for both the clipboard and the primary */
-       Atom clipboard;
-
-       free(sel.clip);
-       sel.clip = str;
+       free(sel.primary);
+       sel.primary = str;
 
        XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
-
-       clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
-       XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
 }
 
 void
@@ -1146,23 +1195,40 @@ die(const char *errstr, ...) {
 
 void
 execsh(void) {
-       char **args;
-       char *envshell = getenv("SHELL");
-       const struct passwd *pass = getpwuid(getuid());
+       char **args, *sh, *prog;
+       const struct passwd *pw;
        char buf[sizeof(long) * 8 + 1];
 
-       unsetenv("COLUMNS");
-       unsetenv("LINES");
-       unsetenv("TERMCAP");
+       errno = 0;
+       if((pw = getpwuid(getuid())) == NULL) {
+               if(errno)
+                       die("getpwuid:%s\n", strerror(errno));
+               else
+                       die("who are you?\n");
+       }
 
-       if(pass) {
-               setenv("LOGNAME", pass->pw_name, 1);
-               setenv("USER", pass->pw_name, 1);
-               setenv("SHELL", pass->pw_shell, 0);
-               setenv("HOME", pass->pw_dir, 0);
+       if (!(sh = getenv("SHELL"))) {
+               sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
        }
 
+       if(opt_cmd)
+               prog = opt_cmd[0];
+       else if(utmp)
+               prog = utmp;
+       else
+               prog = sh;
+       args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
+
        snprintf(buf, sizeof(buf), "%lu", xw.win);
+
+       unsetenv("COLUMNS");
+       unsetenv("LINES");
+       unsetenv("TERMCAP");
+       setenv("LOGNAME", pw->pw_name, 1);
+       setenv("USER", pw->pw_name, 1);
+       setenv("SHELL", sh, 1);
+       setenv("HOME", pw->pw_dir, 1);
+       setenv("TERM", termname, 1);
        setenv("WINDOWID", buf, 1);
 
        signal(SIGCHLD, SIG_DFL);
@@ -1172,25 +1238,21 @@ execsh(void) {
        signal(SIGTERM, SIG_DFL);
        signal(SIGALRM, SIG_DFL);
 
-       DEFAULT(envshell, shell);
-       setenv("TERM", termname, 1);
-       args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
-       execvp(args[0], args);
-       exit(EXIT_FAILURE);
+       execvp(prog, args);
+       _exit(EXIT_FAILURE);
 }
 
 void
 sigchld(int a) {
-       int stat = 0;
+       int stat, ret;
 
        if(waitpid(pid, &stat, 0) < 0)
                die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
 
-       if(WIFEXITED(stat)) {
-               exit(WEXITSTATUS(stat));
-       } else {
-               exit(EXIT_FAILURE);
-       }
+       ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE;
+       if (ret != EXIT_SUCCESS)
+               die("child finished with error '%d'\n", stat);
+       exit(EXIT_SUCCESS);
 }
 
 void
@@ -1261,10 +1323,15 @@ ttyread(void) {
 
        /* keep any uncomplete utf8 char for the next call */
        memmove(buf, ptr, buflen);
+       if(term.scr > 0 && term.scr < histsize-1) term.scr++;
 }
 
 void
 ttywrite(const char *s, size_t n) {
+       Arg arg = (Arg){ .i = term.scr };
+
+       kscrolldown(&arg);
+
        if(xwrite(cmdfd, s, n) == -1)
                die("write error on tty: %s\n", strerror(errno));
 }
@@ -1364,9 +1431,12 @@ treset(void) {
        memset(term.trantbl, sizeof(term.trantbl), CS_USA);
        term.charset = 0;
 
-       tclearregion(0, 0, term.col-1, term.row-1);
-       tmoveto(0, 0);
-       tcursor(CURSOR_SAVE);
+       for(i = 0; i < 2; i++) {
+               tmoveto(0, 0);
+               tcursor(CURSOR_SAVE);
+               tclearregion(0, 0, term.col-1, term.row-1);
+               tswapscreen();
+       }
 }
 
 void
@@ -1389,13 +1459,51 @@ tswapscreen(void) {
 }
 
 void
-tscrolldown(int orig, int n) {
+kscrolldown(const Arg* a) {
+       int n = a->i;
+
+       if(n < 0)
+               n = term.row + n;
+
+       if(n > term.scr)
+               n = term.scr;
+
+       if(term.scr > 0) {
+               term.scr -= n;
+               selscroll(0, -n);
+               tfulldirt();
+       }
+}
+
+void
+kscrollup(const Arg* a) {
+       int n = a->i;
+
+       if(n < 0)
+               n = term.row + n;
+
+       if(term.scr <= histsize - n) {
+               term.scr += n;
+               selscroll(0, n);
+               tfulldirt();
+       }
+}
+
+void
+tscrolldown(int orig, int n, bool copyhist) {
        int i;
        Line temp;
 
        LIMIT(n, 0, term.bot-orig+1);
 
        tsetdirt(orig, term.bot-n);
+       if(copyhist) {
+               term.histi = (term.histi - 1 + histsize) % histsize;
+               temp = term.hist[term.histi];
+               term.hist[term.histi] = term.line[term.bot];
+               term.line[term.bot] = temp;
+       }
+
        tclearregion(0, term.bot-n+1, term.col-1, term.bot);
 
        for(i = term.bot; i >= orig+n; i--) {
@@ -1408,12 +1516,19 @@ tscrolldown(int orig, int n) {
 }
 
 void
-tscrollup(int orig, int n) {
+tscrollup(int orig, int n, bool copyhist) {
        int i;
        Line temp;
 
        LIMIT(n, 0, term.bot-orig+1);
 
+       if(copyhist) {
+               term.histi = (term.histi + 1) % histsize;
+               temp = term.hist[term.histi];
+               term.hist[term.histi] = term.line[orig];
+               term.line[orig] = temp;
+       }
+
        tclearregion(0, orig, term.col-1, orig+n-1);
        tsetdirt(orig+n, term.bot);
 
@@ -1451,7 +1566,7 @@ selscroll(int orig, int n) {
                                sel.oe.x = term.col;
                        }
                }
-               selsort();
+               selnormalize();
        }
 }
 
@@ -1460,7 +1575,7 @@ tnewline(int first_col) {
        int y = term.c.y;
 
        if(y == term.bot) {
-               tscrollup(term.top, 1);
+               tscrollup(term.top, 1, true);
        } else {
                y++;
        }
@@ -1492,7 +1607,8 @@ csiparse(void) {
                        break;
                p++;
        }
-       csiescseq.mode = *p;
+       csiescseq.mode[0] = *p++;
+       csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
 }
 
 /* for absolute user moves, when decom is set */
@@ -1559,6 +1675,7 @@ tsetchar(char *c, Glyph *attr, int x, int y) {
 void
 tclearregion(int x1, int y1, int x2, int y2) {
        int x, y, temp;
+       Glyph *gp;
 
        if(x1 > x2)
                temp = x1, x1 = x2, x2 = temp;
@@ -1573,10 +1690,13 @@ tclearregion(int x1, int y1, int x2, int y2) {
        for(y = y1; y <= y2; y++) {
                term.dirty[y] = 1;
                for(x = x1; x <= x2; x++) {
+                       gp = &term.line[y][x];
                        if(selected(x, y))
                                selclear(NULL);
-                       term.line[y][x] = term.c.attr;
-                       memcpy(term.line[y][x].c, " ", 2);
+                       gp->fg = term.c.attr.fg;
+                       gp->bg = term.c.attr.bg;
+                       gp->mode = 0;
+                       memcpy(gp->c, " ", 2);
                }
        }
 }
@@ -1616,13 +1736,13 @@ tinsertblank(int n) {
 void
 tinsertblankline(int n) {
        if(BETWEEN(term.c.y, term.top, term.bot))
-               tscrolldown(term.c.y, n);
+               tscrolldown(term.c.y, n, false);
 }
 
 void
 tdeleteline(int n) {
        if(BETWEEN(term.c.y, term.top, term.bot))
-               tscrollup(term.c.y, n);
+               tscrollup(term.c.y, n, false);
 }
 
 int32_t
@@ -1631,7 +1751,7 @@ tdefcolor(int *attr, int *npar, int l) {
        uint r, g, b;
 
        switch (attr[*npar + 1]) {
-       case 2: /* direct colour in RGB space */
+       case 2: /* direct color in RGB space */
                if (*npar + 4 >= l) {
                        fprintf(stderr,
                                "erresc(38): Incorrect number of parameters (%d)\n",
@@ -1648,7 +1768,7 @@ tdefcolor(int *attr, int *npar, int l) {
                else
                        idx = TRUECOLOR(r, g, b);
                break;
-       case 5: /* indexed colour */
+       case 5: /* indexed color */
                if (*npar + 2 >= l) {
                        fprintf(stderr,
                                "erresc(38): Incorrect number of parameters (%d)\n",
@@ -1663,8 +1783,8 @@ tdefcolor(int *attr, int *npar, int l) {
                break;
        case 0: /* implemented defined (only foreground) */
        case 1: /* transparent */
-       case 3: /* direct colour in CMY space */
-       case 4: /* direct colour in CMYK space */
+       case 3: /* direct color in CMY space */
+       case 4: /* direct color in CMYK space */
        default:
                fprintf(stderr,
                        "erresc(38): gfx attr %d unknown\n", attr[*npar]);
@@ -1682,15 +1802,24 @@ tsetattr(int *attr, int l) {
        for(i = 0; i < l; i++) {
                switch(attr[i]) {
                case 0:
-                       term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE \
-                                       | ATTR_BOLD | ATTR_ITALIC \
-                                       | ATTR_BLINK);
+                       term.c.attr.mode &= ~(
+                               ATTR_BOLD       |
+                               ATTR_FAINT      |
+                               ATTR_ITALIC     |
+                               ATTR_UNDERLINE  |
+                               ATTR_BLINK      |
+                               ATTR_REVERSE    |
+                               ATTR_INVISIBLE  |
+                               ATTR_STRUCK     );
                        term.c.attr.fg = defaultfg;
                        term.c.attr.bg = defaultbg;
                        break;
                case 1:
                        term.c.attr.mode |= ATTR_BOLD;
                        break;
+               case 2:
+                       term.c.attr.mode |= ATTR_FAINT;
+                       break;
                case 3:
                        term.c.attr.mode |= ATTR_ITALIC;
                        break;
@@ -1698,15 +1827,21 @@ tsetattr(int *attr, int l) {
                        term.c.attr.mode |= ATTR_UNDERLINE;
                        break;
                case 5: /* slow blink */
+                       /* FALLTHROUGH */
                case 6: /* rapid blink */
                        term.c.attr.mode |= ATTR_BLINK;
                        break;
                case 7:
                        term.c.attr.mode |= ATTR_REVERSE;
                        break;
-               case 21:
+               case 8:
+                       term.c.attr.mode |= ATTR_INVISIBLE;
+                       break;
+               case 9:
+                       term.c.attr.mode |= ATTR_STRUCK;
+                       break;
                case 22:
-                       term.c.attr.mode &= ~ATTR_BOLD;
+                       term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
                        break;
                case 23:
                        term.c.attr.mode &= ~ATTR_ITALIC;
@@ -1715,12 +1850,17 @@ tsetattr(int *attr, int l) {
                        term.c.attr.mode &= ~ATTR_UNDERLINE;
                        break;
                case 25:
-               case 26:
                        term.c.attr.mode &= ~ATTR_BLINK;
                        break;
                case 27:
                        term.c.attr.mode &= ~ATTR_REVERSE;
                        break;
+               case 28:
+                       term.c.attr.mode &= ~ATTR_INVISIBLE;
+                       break;
+               case 29:
+                       term.c.attr.mode &= ~ATTR_STRUCK;
+                       break;
                case 38:
                        if ((idx = tdefcolor(attr, &i, l)) >= 0)
                                term.c.attr.fg = idx;
@@ -1784,7 +1924,7 @@ tsetmode(bool priv, bool set, int *args, int narg) {
                                mode = term.mode;
                                MODBIT(term.mode, set, MODE_REVERSE);
                                if(mode != term.mode)
-                                       redraw(REDRAW_TIMEOUT);
+                                       redraw();
                                break;
                        case 6: /* DECOM -- Origin */
                                MODBIT(term.c.state, set, CURSOR_ORIGIN);
@@ -1906,7 +2046,7 @@ csihandle(void) {
        char buf[40];
        int len;
 
-       switch(csiescseq.mode) {
+       switch(csiescseq.mode[0]) {
        default:
        unknown:
                fprintf(stderr, "erresc: unknown csi ");
@@ -1947,7 +2087,7 @@ csihandle(void) {
                break;
        case 'c': /* DA -- Device Attributes */
                if(csiescseq.arg[0] == 0)
-                       ttywrite(VT102ID, sizeof(VT102ID) - 1);
+                       ttywrite(vtiden, sizeof(vtiden) - 1);
                break;
        case 'C': /* CUF -- Cursor <n> Forward */
        case 'a': /* HPR -- Cursor <n> Forward */
@@ -2031,11 +2171,11 @@ csihandle(void) {
                break;
        case 'S': /* SU -- Scroll <n> line up */
                DEFAULT(csiescseq.arg[0], 1);
-               tscrollup(term.top, csiescseq.arg[0]);
+               tscrollup(term.top, csiescseq.arg[0], false);
                break;
        case 'T': /* SD -- Scroll <n> line down */
                DEFAULT(csiescseq.arg[0], 1);
-               tscrolldown(term.top, csiescseq.arg[0]);
+               tscrolldown(term.top, csiescseq.arg[0], false);
                break;
        case 'L': /* IL -- Insert <n> blank lines */
                DEFAULT(csiescseq.arg[0], 1);
@@ -2094,6 +2234,19 @@ csihandle(void) {
        case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
                tcursor(CURSOR_LOAD);
                break;
+       case ' ':
+               switch (csiescseq.mode[1]) {
+                       case 'q': /* DECSCUSR -- Set Cursor Style */
+                               DEFAULT(csiescseq.arg[0], 1);
+                               if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
+                                       goto unknown;
+                               }
+                               xw.cursor = csiescseq.arg[0];
+                               break;
+                       default:
+                               goto unknown;
+               }
+               break;
        }
 }
 
@@ -2151,14 +2304,14 @@ strhandle(void) {
                        /* FALLTHROUGH */
                case 104: /* color reset, here p = NULL */
                        j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
-                       if (!xsetcolorname(j, p)) {
+                       if(xsetcolorname(j, p)) {
                                fprintf(stderr, "erresc: invalid color %s\n", p);
                        } else {
                                /*
                                 * TODO if defaultbg color is changed, borders
                                 * are dirty
                                 */
-                               redraw(0);
+                               redraw();
                        }
                        return;
                }
@@ -2178,12 +2331,23 @@ strhandle(void) {
 
 void
 strparse(void) {
+       int c;
        char *p = strescseq.buf;
 
        strescseq.narg = 0;
        strescseq.buf[strescseq.len] = '\0';
-       while(p && strescseq.narg < STR_ARG_SIZ)
-               strescseq.args[strescseq.narg++] = strsep(&p, ";");
+
+       if(*p == '\0')
+               return;
+
+       while(strescseq.narg < STR_ARG_SIZ) {
+               strescseq.args[strescseq.narg++] = p;
+               while((c = *p) != ';' && c != '\0')
+                       ++p;
+               if(c == '\0')
+                       return;
+               *p++ = '\0';
+       }
 }
 
 void
@@ -2256,12 +2420,10 @@ tdumpline(int n) {
        Glyph *bp, *end;
 
        bp = &term.line[n][0];
-       end = &bp[term.col-1];
-       while(end > bp && !strcmp(" ", end->c))
-               --end;
-       if(bp != end || strcmp(bp->c, " ")) {
+       end = &bp[MIN(tlinelen(n), term.col) - 1];
+       if(bp != end || bp->c[0] != ' ') {
                for( ;bp <= end; ++bp)
-                       tprinter(bp->c, strlen(bp->c));
+                       tprinter(bp->c, utf8len(bp->c));
        }
        tprinter("\n", 1);
 }
@@ -2295,13 +2457,13 @@ techo(char *buf, int len) {
        for(; len > 0; buf++, len--) {
                char c = *buf;
 
-               if(ISCONTROL(c)) { /* control code */
+               if(ISCONTROL((uchar) c)) { /* control code */
                        if(c & 0x80) {
                                c &= 0x7f;
                                tputc("^", 1);
                                tputc("[", 1);
                        } else if(c != '\n' && c != '\r' && c != '\t') {
-                               c ^= '\x40';
+                               c ^= 0x40;
                                tputc("^", 1);
                        }
                        tputc(&c, 1);
@@ -2315,19 +2477,52 @@ techo(char *buf, int len) {
 
 void
 tdeftran(char ascii) {
-       char c, (*bp)[2];
-       static char tbl[][2] = {
-               {'0', CS_GRAPHIC0}, {'B', CS_USA},
-               {0, 0}
-       };
+       static char cs[] = "0B";
+       static int vcs[] = {CS_GRAPHIC0, CS_USA};
+       char *p;
 
-       for (bp = &tbl[0]; (c = (*bp)[0]) && c != ascii; ++bp)
-               /* nothing */;
-
-       if (c == 0)
+       if((p = strchr(cs, ascii)) == NULL) {
                fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
-       else
-               term.trantbl[term.icharset] = (*bp)[1];
+       } else {
+               term.trantbl[term.icharset] = vcs[p - cs];
+       }
+}
+
+void
+tdectest(char c) {
+       static char E[UTF_SIZ] = "E";
+       int x, y;
+
+       if(c == '8') { /* DEC screen alignment test. */
+               for(x = 0; x < term.col; ++x) {
+                       for(y = 0; y < term.row; ++y)
+                               tsetchar(E, &term.c.attr, x, y);
+               }
+       }
+}
+
+void
+tstrsequence(uchar c) {
+       if (c & 0x80) {
+               switch (c) {
+               case 0x90:   /* DCS -- Device Control String */
+                       c = 'P';
+                       break;
+               case 0x9f:   /* APC -- Application Program Command */
+                       c = '_';
+                       break;
+               case 0x9e:   /* PM -- Privacy Message */
+                       c = '^';
+                       break;
+               case 0x9d:   /* OSC -- Operating System Command */
+                       c = ']';
+                       break;
+               }
+       }
+       strreset();
+       strescseq.type = c;
+       term.esc |= ESC_STR;
+       return;
 }
 
 void
@@ -2358,7 +2553,7 @@ tcontrolcode(uchar ascii) {
                        if(!(xw.state & WIN_FOCUSED))
                                xseturgency(1);
                        if (bellvolume)
-                               XBell(xw.dpy, bellvolume);
+                               XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
                }
                break;
        case '\033': /* ESC */
@@ -2366,11 +2561,9 @@ tcontrolcode(uchar ascii) {
                term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
                term.esc |= ESC_START;
                return;
-       case '\016': /* SO */
-               term.charset = 0;
-               return;
-       case '\017': /* SI */
-               term.charset = 1;
+       case '\016': /* SO (LS1 -- Locking shift 1) */
+       case '\017': /* SI (LS0 -- Locking shift 0) */
+               term.charset = 1 - (ascii - '\016');
                return;
        case '\032': /* SUB */
                tsetchar(question, &term.c.attr, term.c.x, term.c.y);
@@ -2384,37 +2577,117 @@ tcontrolcode(uchar ascii) {
        case 0177:   /* DEL (IGNORED) */
                return;
        case 0x84:   /* TODO: IND */
-       case 0x85:   /* TODO: NEL */
-       case 0x88:   /* TODO: HTS */
+               break;
+       case 0x85:   /* NEL -- Next line */
+               tnewline(1); /* always go to first col */
+               break;
+       case 0x88:   /* HTS -- Horizontal tab stop */
+               term.tabs[term.c.x] = 1;
+               break;
        case 0x8d:   /* TODO: RI */
        case 0x8e:   /* TODO: SS2 */
        case 0x8f:   /* TODO: SS3 */
-       case 0x90:   /* TODO: DCS */
        case 0x98:   /* TODO: SOS */
-       case 0x9a:   /* TODO: DECID */
+               break;
+       case 0x9a:   /* DECID -- Identify Terminal */
+               ttywrite(vtiden, sizeof(vtiden) - 1);
+               break;
        case 0x9b:   /* TODO: CSI */
        case 0x9c:   /* TODO: ST */
-       case 0x9d:   /* TODO: OSC */
-       case 0x9e:   /* TODO: PM */
-       case 0x9f:   /* TODO: APC */
                break;
+       case 0x90:   /* DCS -- Device Control String */
+       case 0x9f:   /* APC -- Application Program Command */
+       case 0x9e:   /* PM -- Privacy Message */
+       case 0x9d:   /* OSC -- Operating System Command */
+               tstrsequence(ascii);
+               return;
        }
        /* only CAN, SUB, \a and C1 chars interrupt a sequence */
        term.esc &= ~(ESC_STR_END|ESC_STR);
        return;
 }
 
-void
-tdectest(char c) {
-       static char E[UTF_SIZ] = "E";
-       int x, y;
-
-       if(c == '8') { /* DEC screen alignment test. */
-               for(x = 0; x < term.col; ++x) {
-                       for(y = 0; y < term.row; ++y)
-                               tsetchar(E, &term.c.attr, x, y);
+/*
+ * returns 1 when the sequence is finished and it hasn't to read
+ * more characters for this sequence, otherwise 0
+ */
+int
+eschandle(uchar ascii) {
+       switch(ascii) {
+       case '[':
+               term.esc |= ESC_CSI;
+               return 0;
+       case '#':
+               term.esc |= ESC_TEST;
+               return 0;
+       case 'P': /* DCS -- Device Control String */
+       case '_': /* APC -- Application Program Command */
+       case '^': /* PM -- Privacy Message */
+       case ']': /* OSC -- Operating System Command */
+       case 'k': /* old title set compatibility */
+               tstrsequence(ascii);
+               return 0;
+       case 'n': /* LS2 -- Locking shift 2 */
+       case 'o': /* LS3 -- Locking shift 3 */
+               term.charset = 2 + (ascii - 'n');
+               break;
+       case '(': /* GZD4 -- set primary charset G0 */
+       case ')': /* G1D4 -- set secondary charset G1 */
+       case '*': /* G2D4 -- set tertiary charset G2 */
+       case '+': /* G3D4 -- set quaternary charset G3 */
+               term.icharset = ascii - '(';
+               term.esc |= ESC_ALTCHARSET;
+               return 0;
+       case 'D': /* IND -- Linefeed */
+               if(term.c.y == term.bot) {
+                       tscrollup(term.top, 1, true);
+               } else {
+                       tmoveto(term.c.x, term.c.y+1);
                }
+               break;
+       case 'E': /* NEL -- Next line */
+               tnewline(1); /* always go to first col */
+               break;
+       case 'H': /* HTS -- Horizontal tab stop */
+               term.tabs[term.c.x] = 1;
+               break;
+       case 'M': /* RI -- Reverse index */
+               if(term.c.y == term.top) {
+                       tscrolldown(term.top, 1, true);
+               } else {
+                       tmoveto(term.c.x, term.c.y-1);
+               }
+               break;
+       case 'Z': /* DECID -- Identify Terminal */
+               ttywrite(vtiden, sizeof(vtiden) - 1);
+               break;
+       case 'c': /* RIS -- Reset to inital state */
+               treset();
+               xresettitle();
+               xloadcols();
+               break;
+       case '=': /* DECPAM -- Application keypad */
+               term.mode |= MODE_APPKEYPAD;
+               break;
+       case '>': /* DECPNM -- Normal keypad */
+               term.mode &= ~MODE_APPKEYPAD;
+               break;
+       case '7': /* DECSC -- Save Cursor */
+               tcursor(CURSOR_SAVE);
+               break;
+       case '8': /* DECRC -- Restore Cursor */
+               tcursor(CURSOR_LOAD);
+               break;
+       case '\\': /* ST -- String Terminator */
+               if(term.esc & ESC_STR_END)
+                       strhandle();
+               break;
+       default:
+               fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
+                       (uchar) ascii, isprint(ascii)? ascii:'.');
+               break;
        }
+       return 1;
 }
 
 void
@@ -2430,7 +2703,10 @@ tputc(char *c, int len) {
                unicodep = ascii = *c;
        } else {
                utf8decode(c, &unicodep, UTF_SIZ);
-               width = wcwidth(unicodep);
+               if ((width = wcwidth(unicodep)) == -1) {
+                       c = "\357\277\275";     /* UTF_INVALID */
+                       width = 1;
+               }
                control = ISCONTROLC1(unicodep);
                ascii = unicodep;
        }
@@ -2501,78 +2777,9 @@ tputc(char *c, int len) {
                } else if(term.esc & ESC_TEST) {
                        tdectest(ascii);
                } else {
-                       switch(ascii) {
-                       case '[':
-                               term.esc |= ESC_CSI;
-                               return;
-                       case '#':
-                               term.esc |= ESC_TEST;
+                       if (!eschandle(ascii))
                                return;
-                       case 'P': /* DCS -- Device Control String */
-                       case '_': /* APC -- Application Program Command */
-                       case '^': /* PM -- Privacy Message */
-                       case ']': /* OSC -- Operating System Command */
-                       case 'k': /* old title set compatibility */
-                               strreset();
-                               strescseq.type = ascii;
-                               term.esc |= ESC_STR;
-                               return;
-                       case '(': /* set primary charset G0 */
-                       case ')': /* set secondary charset G1 */
-                       case '*': /* set tertiary charset G2 */
-                       case '+': /* set quaternary charset G3 */
-                               term.icharset = ascii - '(';
-                               term.esc |= ESC_ALTCHARSET;
-                               return;
-                       case 'D': /* IND -- Linefeed */
-                               if(term.c.y == term.bot) {
-                                       tscrollup(term.top, 1);
-                               } else {
-                                       tmoveto(term.c.x, term.c.y+1);
-                               }
-                               break;
-                       case 'E': /* NEL -- Next line */
-                               tnewline(1); /* always go to first col */
-                               break;
-                       case 'H': /* HTS -- Horizontal tab stop */
-                               term.tabs[term.c.x] = 1;
-                               break;
-                       case 'M': /* RI -- Reverse index */
-                               if(term.c.y == term.top) {
-                                       tscrolldown(term.top, 1);
-                               } else {
-                                       tmoveto(term.c.x, term.c.y-1);
-                               }
-                               break;
-                       case 'Z': /* DECID -- Identify Terminal */
-                               ttywrite(VT102ID, sizeof(VT102ID) - 1);
-                               break;
-                       case 'c': /* RIS -- Reset to inital state */
-                               treset();
-                               xresettitle();
-                               xloadcols();
-                               break;
-                       case '=': /* DECPAM -- Application keypad */
-                               term.mode |= MODE_APPKEYPAD;
-                               break;
-                       case '>': /* DECPNM -- Normal keypad */
-                               term.mode &= ~MODE_APPKEYPAD;
-                               break;
-                       case '7': /* DECSC -- Save Cursor */
-                               tcursor(CURSOR_SAVE);
-                               break;
-                       case '8': /* DECRC -- Restore Cursor */
-                               tcursor(CURSOR_LOAD);
-                               break;
-                       case '\\': /* ST -- String Terminator */
-                               if(term.esc & ESC_STR_END)
-                                       strhandle();
-                               break;
-                       default:
-                               fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
-                                       (uchar) ascii, isprint(ascii)? ascii:'.');
-                               break;
-                       }
+                       /* sequence already finished */
                }
                term.esc = 0;
                /*
@@ -2588,13 +2795,16 @@ tputc(char *c, int len) {
        if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
                gp->mode |= ATTR_WRAP;
                tnewline(1);
+               gp = &term.line[term.c.y][term.c.x];
        }
 
-       if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col)
-               memmove(gp+1, gp, (term.col - term.c.x - 1) * sizeof(Glyph));
+       if(IS_SET(MODE_INSERT) && term.c.x+width < term.col)
+               memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
 
-       if(term.c.x+width > term.col)
+       if(term.c.x+width > term.col) {
                tnewline(1);
+               gp = &term.line[term.c.y][term.c.x];
+       }
 
        tsetchar(c, &term.c.attr, term.c.x, term.c.y);
 
@@ -2612,18 +2822,20 @@ tputc(char *c, int len) {
        }
 }
 
-int
+void
 tresize(int col, int row) {
-       int i;
+       int i, j;
        int minrow = MIN(row, term.row);
        int mincol = MIN(col, term.col);
        int slide = term.c.y - row + 1;
        bool *bp;
-       Line *orig;
        TCursor c;
 
-       if(col < 1 || row < 1)
-               return 0;
+       if(col < 1 || row < 1) {
+               fprintf(stderr,
+                       "tresize: error resizing to %dx%d\n", col, row);
+               return;
+       }
 
        /* free unneeded rows */
        i = 0;
@@ -2648,19 +2860,26 @@ tresize(int col, int row) {
        /* resize to new height */
        term.line = xrealloc(term.line, row * sizeof(Line));
        term.alt  = xrealloc(term.alt,  row * sizeof(Line));
+       term.hist  = xrealloc(term.hist,  histsize * sizeof(Line));
        term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
        term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
 
+       for(i = 0; i < histsize; i++) {
+               term.hist[i] = xrealloc(term.hist[i], col * sizeof(Glyph));
+               for(j = mincol; j < col; j++) {
+                       term.hist[i][j] = term.c.attr;
+                       memcpy(term.hist[i][j].c, " ", 2);
+               }
+       }
+
        /* resize each row to new width, zero-pad if needed */
        for(i = 0; i < minrow; i++) {
-               term.dirty[i] = 1;
                term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
                term.alt[i]  = xrealloc(term.alt[i],  col * sizeof(Glyph));
        }
 
        /* allocate any new rows */
        for(/* i == minrow */; i < row; i++) {
-               term.dirty[i] = 1;
                term.line[i] = xmalloc(col * sizeof(Glyph));
                term.alt[i] = xmalloc(col * sizeof(Glyph));
        }
@@ -2680,10 +2899,9 @@ tresize(int col, int row) {
        tsetscroll(0, row-1);
        /* make use of the LIMIT in tmoveto */
        tmoveto(term.c.x, term.c.y);
-       /* Clearing both screens */
-       orig = term.line;
+       /* Clearing both screens (it makes dirty all lines) */
        c = term.c;
-       do {
+       for(i = 0; i < 2; i++) {
                if(mincol < col && 0 < minrow) {
                        tclearregion(mincol, 0, col - 1, minrow - 1);
                }
@@ -2692,10 +2910,8 @@ tresize(int col, int row) {
                }
                tswapscreen();
                tcursor(CURSOR_LOAD);
-       } while(orig != term.line);
+       }
        term.c = c;
-
-       return (slide > 0);
 }
 
 void
@@ -2720,14 +2936,14 @@ xloadcols(void) {
        int i;
        XRenderColor color = { .alpha = 0xffff };
        static bool loaded;
-       Colour *cp;
+       Color *cp;
 
        if(loaded) {
                for (cp = dc.col; cp < dc.col + LEN(dc.col); ++cp)
                        XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
        }
 
-       /* load colours [0-15] and [256-LEN(colorname)] (config.h) */
+       /* load colors [0-15] and [256-LEN(colorname)] (config.h) */
        for(i = 0; i < LEN(colorname); i++) {
                if(!colorname[i])
                        continue;
@@ -2736,7 +2952,7 @@ xloadcols(void) {
                }
        }
 
-       /* load colours [16-231] ; same colours as xterm */
+       /* load colors [16-231] ; same colors as xterm */
        for(i = 16; i < 6*6*6+16; i++) {
                color.red   = sixd_to_16bit( ((i-16)/36)%6 );
                color.green = sixd_to_16bit( ((i-16)/6) %6 );
@@ -2745,7 +2961,7 @@ xloadcols(void) {
                        die("Could not allocate color %d\n", i);
        }
 
-       /* load colours [232-255] ; grayscale */
+       /* load colors [232-255] ; grayscale */
        for(; i < 256; i++) {
                color.red = color.green = color.blue = 0x0808 + 0x0a0a * (i-(6*6*6+16));
                if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i]))
@@ -2757,33 +2973,45 @@ xloadcols(void) {
 int
 xsetcolorname(int x, const char *name) {
        XRenderColor color = { .alpha = 0xffff };
-       Colour colour;
+       Color ncolor;
+
        if(!BETWEEN(x, 0, LEN(colorname)))
-               return -1;
+               return 1;
+
        if(!name) {
-               if(BETWEEN(x, 16, 16 + 215)) {
-                       int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
-                       color.red = sixd_to_16bit(r);
-                       color.green = sixd_to_16bit(g);
-                       color.blue = sixd_to_16bit(b);
-                       if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
-                               return 0; /* something went wrong */
-                       dc.col[x] = colour;
-                       return 1;
-               } else if(BETWEEN(x, 16 + 216, 255)) {
-                       color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
-                       if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
-                               return 0; /* something went wrong */
-                       dc.col[x] = colour;
-                       return 1;
-               } else {
+               if(BETWEEN(x, 16, 16 + 215)) { /* 256 color */
+                       color.red   = sixd_to_16bit( ((x-16)/36)%6 );
+                       color.green = sixd_to_16bit( ((x-16)/6) %6 );
+                       color.blue  = sixd_to_16bit( ((x-16)/1) %6 );
+                       if(!XftColorAllocValue(xw.dpy, xw.vis,
+                                               xw.cmap, &color, &ncolor)) {
+                               return 1;
+                       }
+
+                       XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
+                       dc.col[x] = ncolor;
+                       return 0;
+               } else if(BETWEEN(x, 16 + 216, 255)) { /* greyscale */
+                       color.red = color.green = color.blue = \
+                                   0x0808 + 0x0a0a * (x - (16 + 216));
+                       if(!XftColorAllocValue(xw.dpy, xw.vis,
+                                               xw.cmap, &color, &ncolor)) {
+                               return 1;
+                       }
+
+                       XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
+                       dc.col[x] = ncolor;
+                       return 0;
+               } else { /* system colors */
                        name = colorname[x];
                }
        }
-       if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
-               return 0;
-       dc.col[x] = colour;
-       return 1;
+       if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &ncolor))
+               return 1;
+
+       XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
+       dc.col[x] = ncolor;
+       return 0;
 }
 
 void
@@ -2884,6 +3112,7 @@ xloadfonts(char *fontstr, double fontsize) {
        FcPattern *pattern;
        FcResult r_sz, r_psz;
        double fontval;
+       float ceilf(float);
 
        if(fontstr[0] == '-') {
                pattern = XftXlfdParse(fontstr, False, False);
@@ -2894,7 +3123,7 @@ xloadfonts(char *fontstr, double fontsize) {
        if(!pattern)
                die("st: can't open font %s\n", fontstr);
 
-       if(fontsize > 0) {
+       if(fontsize > 1) {
                FcPatternDel(pattern, FC_PIXEL_SIZE);
                FcPatternDel(pattern, FC_SIZE);
                FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
@@ -2914,6 +3143,7 @@ xloadfonts(char *fontstr, double fontsize) {
                        FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
                        usedfontsize = 12;
                }
+               defaultfontsize = usedfontsize;
        }
 
        FcConfigSubstitute(0, pattern, FcMatchPattern);
@@ -2926,11 +3156,13 @@ xloadfonts(char *fontstr, double fontsize) {
                FcPatternGetDouble(dc.font.match->pattern,
                                   FC_PIXEL_SIZE, 0, &fontval);
                usedfontsize = fontval;
+               if(fontsize == 0)
+                       defaultfontsize = fontval;
        }
 
        /* Setting character width and height. */
-       xw.cw = CEIL(dc.font.width * cwscale);
-       xw.ch = CEIL(dc.font.height * chscale);
+       xw.cw = ceilf(dc.font.width * cwscale);
+       xw.ch = ceilf(dc.font.height * chscale);
 
        FcPatternDel(pattern, FC_SLANT);
        FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
@@ -2981,10 +3213,29 @@ xunloadfonts(void) {
 
 void
 xzoom(const Arg *arg) {
+       Arg larg;
+
+       larg.i = usedfontsize + arg->i;
+       xzoomabs(&larg);
+}
+
+void
+xzoomabs(const Arg *arg) {
        xunloadfonts();
-       xloadfonts(usedfont, usedfontsize + arg->i);
+       xloadfonts(usedfont, arg->i);
        cresize(0, 0);
-       redraw(0);
+       redraw();
+       xhints();
+}
+
+void
+xzoomreset(const Arg *arg) {
+       Arg larg;
+
+       if(defaultfontsize > 0) {
+               larg.i = defaultfontsize;
+               xzoomabs(&larg);
+       }
 }
 
 void
@@ -3027,8 +3278,8 @@ xinit(void) {
                | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
        xw.attrs.colormap = xw.cmap;
 
-       parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
-                       XRootWindow(xw.dpy, xw.scr);
+       if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
+               parent = XRootWindow(xw.dpy, xw.scr);
        xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
                        xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
                        xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
@@ -3090,7 +3341,7 @@ void
 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
        int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
            width = charlen * xw.cw, xp, i;
-       int frcflags;
+       int frcflags, charexists;
        int u8fl, u8fblen, u8cblen, doesexist;
        char *u8c, *u8fs;
        long unicodep;
@@ -3099,7 +3350,7 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
        FcPattern *fcpattern, *fontpattern;
        FcFontSet *fcsets[] = { NULL };
        FcCharSet *fccharset;
-       Colour *fg, *bg, *temp, revfg, revbg, truefg, truebg;
+       Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
        XRenderColor colfg, colbg;
        XRectangle r;
        int oneatatime;
@@ -3145,10 +3396,10 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
 
        if(base.mode & ATTR_BOLD) {
                /*
-                * change basic system colours [0-7]
-                * to bright system colours [8-15]
+                * change basic system colors [0-7]
+                * to bright system colors [8-15]
                 */
-               if(BETWEEN(base.fg, 0, 7))
+               if(BETWEEN(base.fg, 0, 7) && !(base.mode & ATTR_FAINT))
                        fg = &dc.col[base.fg + 8];
 
                if(base.mode & ATTR_ITALIC) {
@@ -3192,9 +3443,20 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
                bg = temp;
        }
 
+       if(base.mode & ATTR_FAINT && !(base.mode & ATTR_BOLD)) {
+               colfg.red = fg->color.red / 2;
+               colfg.green = fg->color.green / 2;
+               colfg.blue = fg->color.blue / 2;
+               XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
+               fg = &revfg;
+       }
+
        if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
                fg = bg;
 
+       if(base.mode & ATTR_INVISIBLE)
+               fg = bg;
+
        /* Intelligent cleaning up of the borders. */
        if(x == 0) {
                xclear(0, (y == 0)? 0 : winy, borderpx,
@@ -3237,28 +3499,22 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
                        bytelen -= u8cblen;
 
                        doesexist = XftCharExists(xw.dpy, font->match, unicodep);
-                       if(oneatatime || !doesexist || bytelen <= 0) {
-                               if(oneatatime || bytelen <= 0) {
-                                       if(doesexist) {
-                                               u8fl++;
-                                               u8fblen += u8cblen;
-                                       }
-                               }
-
-                               if(u8fl > 0) {
-                                       XftDrawStringUtf8(xw.draw, fg,
-                                                       font->match, xp,
-                                                       winy + font->ascent,
-                                                       (FcChar8 *)u8fs,
-                                                       u8fblen);
-                                       xp += xw.cw * u8fl;
-
-                               }
-                               break;
+                       if(doesexist) {
+                                       u8fl++;
+                                       u8fblen += u8cblen;
+                                       if(!oneatatime && bytelen > 0)
+                                                       continue;
                        }
 
-                       u8fl++;
-                       u8fblen += u8cblen;
+                       if(u8fl > 0) {
+                               XftDrawStringUtf8(xw.draw, fg,
+                                               font->match, xp,
+                                               winy + font->ascent,
+                                               (FcChar8 *)u8fs,
+                                               u8fblen);
+                               xp += xw.cw * u8fl;
+                       }
+                       break;
                }
                if(doesexist) {
                        if(oneatatime)
@@ -3268,8 +3524,13 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
 
                /* Search the font cache. */
                for(i = 0; i < frclen; i++) {
-                       if(XftCharExists(xw.dpy, frc[i].font, unicodep)
-                                       && frc[i].flags == frcflags) {
+                       charexists = XftCharExists(xw.dpy, frc[i].font, unicodep);
+                       /* Everything correct. */
+                       if(charexists && frc[i].flags == frcflags)
+                               break;
+                       /* We got a default font for a not found glyph. */
+                       if(!charexists && frc[i].flags == frcflags \
+                                       && frc[i].unicodep == unicodep) {
                                break;
                        }
                }
@@ -3300,8 +3561,8 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
                                        FcMatchPattern);
                        FcDefaultSubstitute(fcpattern);
 
-                       fontpattern = FcFontSetMatch(0, fcsets,
-                                       FcTrue, fcpattern, &fcres);
+                       fontpattern = FcFontSetMatch(0, fcsets, 1,
+                                       fcpattern, &fcres);
 
                        /*
                         * Overwrite or create the new cache entry.
@@ -3309,11 +3570,13 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
                        if(frclen >= LEN(frc)) {
                                frclen = LEN(frc) - 1;
                                XftFontClose(xw.dpy, frc[frclen].font);
+                               frc[frclen].unicodep = 0;
                        }
 
                        frc[frclen].font = XftFontOpenPattern(xw.dpy,
                                        fontpattern);
                        frc[frclen].flags = frcflags;
+                       frc[frclen].unicodep = unicodep;
 
                        i = frclen;
                        frclen++;
@@ -3345,6 +3608,11 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
                                width, 1);
        }
 
+       if(base.mode & ATTR_STRUCK) {
+               XftDrawRect(xw.draw, fg, winx, winy + 2 * font->ascent / 3,
+                               width, 1);
+       }
+
        /* Reset clip to none. */
        XftDrawSetClip(xw.draw, 0);
 }
@@ -3374,39 +3642,60 @@ xdrawcursor(void) {
        xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
                        oldy, width, sl);
 
+       if(IS_SET(MODE_HIDE))
+               return;
+
        /* draw the new one */
-       if(!(IS_SET(MODE_HIDE))) {
-               if(xw.state & WIN_FOCUSED) {
-                       if(IS_SET(MODE_REVERSE)) {
-                               g.mode |= ATTR_REVERSE;
-                               g.fg = defaultcs;
-                               g.bg = defaultfg;
-                       }
+       if(xw.state & WIN_FOCUSED) {
+               switch (xw.cursor) {
+                       case 0: /* Blinking Block */
+                       case 1: /* Blinking Block (Default) */
+                       case 2: /* Steady Block */
+                               if(IS_SET(MODE_REVERSE)) {
+                                               g.mode |= ATTR_REVERSE;
+                                               g.fg = defaultcs;
+                                               g.bg = defaultfg;
+                                       }
 
-                       sl = utf8len(g.c);
-                       width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
-                               ? 2 : 1;
-                       xdraws(g.c, g, term.c.x, term.c.y, width, sl);
-               } else {
-                       XftDrawRect(xw.draw, &dc.col[defaultcs],
-                                       borderpx + curx * xw.cw,
-                                       borderpx + term.c.y * xw.ch,
-                                       xw.cw - 1, 1);
-                       XftDrawRect(xw.draw, &dc.col[defaultcs],
-                                       borderpx + curx * xw.cw,
-                                       borderpx + term.c.y * xw.ch,
-                                       1, xw.ch - 1);
-                       XftDrawRect(xw.draw, &dc.col[defaultcs],
-                                       borderpx + (curx + 1) * xw.cw - 1,
-                                       borderpx + term.c.y * xw.ch,
-                                       1, xw.ch - 1);
-                       XftDrawRect(xw.draw, &dc.col[defaultcs],
-                                       borderpx + curx * xw.cw,
-                                       borderpx + (term.c.y + 1) * xw.ch - 1,
-                                       xw.cw, 1);
+                               sl = utf8len(g.c);
+                               width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
+                                       ? 2 : 1;
+                               xdraws(g.c, g, term.c.x, term.c.y, width, sl);
+                               break;
+                       case 3: /* Blinking Underline */
+                       case 4: /* Steady Underline */
+                               XftDrawRect(xw.draw, &dc.col[defaultcs],
+                                               borderpx + curx * xw.cw,
+                                               borderpx + (term.c.y + 1) * xw.ch - 1,
+                                               xw.cw, 1);
+                               break;
+                       case 5: /* Blinking bar */
+                       case 6: /* Steady bar */
+                               XftDrawRect(xw.draw, &dc.col[defaultcs],
+                                                               borderpx + curx * xw.cw,
+                                                               borderpx + term.c.y * xw.ch,
+                                                               1, xw.ch);
+                               break;
                }
-               oldx = curx, oldy = term.c.y;
+       } else {
+               XftDrawRect(xw.draw, &dc.col[defaultcs],
+                               borderpx + curx * xw.cw,
+                               borderpx + term.c.y * xw.ch,
+                               xw.cw - 1, 1);
+               XftDrawRect(xw.draw, &dc.col[defaultcs],
+                               borderpx + curx * xw.cw,
+                               borderpx + term.c.y * xw.ch,
+                               1, xw.ch - 1);
+               XftDrawRect(xw.draw, &dc.col[defaultcs],
+                               borderpx + (curx + 1) * xw.cw - 1,
+                               borderpx + term.c.y * xw.ch,
+                               1, xw.ch - 1);
+               XftDrawRect(xw.draw, &dc.col[defaultcs],
+                               borderpx + curx * xw.cw,
+                               borderpx + (term.c.y + 1) * xw.ch - 1,
+                               xw.cw, 1);
        }
+       oldx = curx, oldy = term.c.y;
 }
 
 
@@ -3427,16 +3716,9 @@ xresettitle(void) {
 }
 
 void
-redraw(int timeout) {
-       struct timespec tv = {0, timeout * 1000};
-
+redraw(void) {
        tfulldirt();
        draw();
-
-       if(timeout > 0) {
-               nanosleep(&tv, NULL);
-               XSync(xw.dpy, False); /* necessary for a good tput flash */
-       }
 }
 
 void
@@ -3466,10 +3748,10 @@ drawregion(int x1, int y1, int x2, int y2) {
 
                xtermclear(0, y, term.col, y);
                term.dirty[y] = 0;
-               base = term.line[y][0];
+               base = TLINE(y)[0];
                ic = ib = ox = 0;
                for(x = x1; x < x2; x++) {
-                       new = term.line[y][x];
+                       new = TLINE(y)[x];
                        if(new.mode == ATTR_WDUMMY)
                                continue;
                        if(ena_sel && selected(x, y))
@@ -3492,7 +3774,8 @@ drawregion(int x1, int y1, int x2, int y2) {
                if(ib > 0)
                        xdraws(buf, base, ox, y, ic, ib);
        }
-       xdrawcursor();
+       if(term.scr == 0)
+               xdrawcursor();
 }
 
 void
@@ -3503,7 +3786,7 @@ expose(XEvent *ev) {
                if(!e->count)
                        xw.state &= ~WIN_REDRAW;
        }
-       redraw(0);
+       redraw();
 }
 
 void
@@ -3706,11 +3989,14 @@ run(void) {
        int w = xw.w, h = xw.h;
        fd_set rfd;
        int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
-       struct timeval drawtimeout, *tv = NULL, now, last, lastblink;
+       struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
+       long deltatime;
 
        /* Waiting for window mapping */
        while(1) {
                XNextEvent(xw.dpy, &ev);
+               if(XFilterEvent(&ev, None))
+                       continue;
                if(ev.type == ConfigureNotify) {
                        w = ev.xconfigure.width;
                        h = ev.xconfigure.height;
@@ -3722,36 +4008,35 @@ run(void) {
        ttynew();
        cresize(w, h);
 
-       gettimeofday(&last, NULL);
+       clock_gettime(CLOCK_MONOTONIC, &last);
        lastblink = last;
 
        for(xev = actionfps;;) {
-               long deltatime;
-
                FD_ZERO(&rfd);
                FD_SET(cmdfd, &rfd);
                FD_SET(xfd, &rfd);
 
-               if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
+               if(pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
                        if(errno == EINTR)
                                continue;
                        die("select failed: %s\n", strerror(errno));
                }
                if(FD_ISSET(cmdfd, &rfd)) {
                        ttyread();
-                       if(blinktimeout) {
-                               blinkset = tattrset(ATTR_BLINK);
-                               if(!blinkset)
-                                       MODBIT(term.mode, 0, MODE_BLINK);
-                       }
                }
 
-               if(FD_ISSET(xfd, &rfd))
+               if(FD_ISSET(xfd, &rfd)) {
                        xev = actionfps;
+                       if(blinktimeout) {
+                               lastblink = now;
+                               MODBIT(term.mode, 1, MODE_BLINK);
+                               blinkset = 1;
+                       }
+               }
 
-               gettimeofday(&now, NULL);
+               clock_gettime(CLOCK_MONOTONIC, &now);
                drawtimeout.tv_sec = 0;
-               drawtimeout.tv_usec = (1000/xfps) * 1000;
+               drawtimeout.tv_nsec = (1000/xfps) * 1E6;
                tv = &drawtimeout;
 
                dodraw = 0;
@@ -3786,13 +4071,16 @@ run(void) {
                                if(blinkset) {
                                        if(TIMEDIFF(now, lastblink) \
                                                        > blinktimeout) {
-                                               drawtimeout.tv_usec = 1;
+                                               drawtimeout.tv_nsec = 1000;
                                        } else {
-                                               drawtimeout.tv_usec = (1000 * \
+                                               drawtimeout.tv_nsec = (1E6 * \
                                                        (blinktimeout - \
                                                        TIMEDIFF(now,
                                                                lastblink)));
                                        }
+                                       drawtimeout.tv_sec = \
+                                           drawtimeout.tv_nsec / 1E9;
+                                       drawtimeout.tv_nsec %= (long)1E9;
                                } else {
                                        tv = NULL;
                                }
@@ -3803,9 +4091,9 @@ run(void) {
 
 void
 usage(void) {
-       die("%s " VERSION " (c) 2010-2014 st engineers\n" \
-       "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
-       " [-t title] [-w windowid] [-e command ...]\n", argv0);
+       die("%s " VERSION " (c) 2010-2015 st engineers\n" \
+       "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
+       "          [-i] [-t title] [-w windowid] [-e command ...]\n", argv0);
 }
 
 int
@@ -3815,6 +4103,7 @@ main(int argc, char *argv[]) {
 
        xw.l = xw.t = 0;
        xw.isfixed = False;
+       xw.cursor = 0;
 
        ARGBEGIN {
        case 'a':