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Implementing italic-bold. This will require an increase of the avgWdth.
[st.git] / st.c
diff --git a/st.c b/st.c
index 123d29e..2e1ac67 100644 (file)
--- a/st.c
+++ b/st.c
@@ -36,7 +36,8 @@
 
 #define USAGE \
        "st " VERSION " (c) 2010-2012 st engineers\n" \
-       "usage: st [-t title] [-c class] [-w windowid] [-v] [-e command...]\n"
+       "usage: st [-t title] [-c class] [-g geometry]" \
+       " [-w windowid] [-v] [-f file] [-e command...]\n"
 
 /* XEMBED messages */
 #define XEMBED_FOCUS_IN  4
@@ -54,6 +55,7 @@
 
 #define SELECT_TIMEOUT (20*1000) /* 20 ms */
 #define DRAW_TIMEOUT  (20*1000) /* 20 ms */
+#define REDRAW_TIMEOUT (80*1000) /* 80 ms */
 
 #define SERRNO strerror(errno)
 #define MIN(a, b)  ((a) < (b) ? (a) : (b))
@@ -74,6 +76,8 @@ enum glyph_attribute {
        ATTR_UNDERLINE = 2,
        ATTR_BOLD      = 4,
        ATTR_GFX       = 8,
+       ATTR_ITALIC    = 16,
+       ATTR_BLINK     = 32,
 };
 
 enum cursor_movement {
@@ -194,6 +198,8 @@ typedef struct {
        XIM xim;
        XIC xic;
        int scr;
+       Bool isfixed; /* is fixed geometry? */
+       int fx, fy, fw, fh; /* fixed geometry */
        int w;  /* window width */
        int h;  /* window height */
        int ch; /* char height */
@@ -217,6 +223,7 @@ typedef struct {
        struct {int x, y;} b, e;
        char *clip;
        Atom xtarget;
+       bool alt;
        struct timeval tclick1;
        struct timeval tclick2;
 } Selection;
@@ -233,11 +240,12 @@ typedef struct {
                short lbearing;
                short rbearing;
                XFontSet set;
-       } font, bfont;
+       } font, bfont, ifont, ibfont;
 } DC;
 
 static void die(const char*, ...);
 static void draw(void);
+static void redraw(void);
 static void drawregion(int, int, int, int);
 static void execsh(void);
 static void sigchld(int);
@@ -273,6 +281,7 @@ static void tsetchar(char*);
 static void tsetscroll(int, int);
 static void tswapscreen(void);
 static void tsetdirt(int, int);
+static void tsetmode(bool, bool, int *, int);
 static void tfulldirt(void);
 
 static void ttynew(void);
@@ -283,10 +292,11 @@ static void ttywrite(const char *, size_t);
 static void xdraws(char *, Glyph, int, int, int, int);
 static void xhints(void);
 static void xclear(int, int, int, int);
-static void xcopy();
+static void xcopy(void);
 static void xdrawcursor(void);
 static void xinit(void);
 static void xloadcols(void);
+static void xresettitle(void);
 static void xseturgency(int);
 static void xsetsel(char*);
 static void xresize(int, int);
@@ -303,12 +313,13 @@ static void brelease(XEvent *);
 static void bpress(XEvent *);
 static void bmotion(XEvent *);
 static void selnotify(XEvent *);
+static void selclear(XEvent *);
 static void selrequest(XEvent *);
 
 static void selinit(void);
 static inline bool selected(int, int);
 static void selcopy(void);
-static void selpaste();
+static void selpaste(void);
 static void selscroll(int, int);
 
 static int utf8decode(char *, long *);
@@ -316,6 +327,9 @@ static int utf8encode(long *, char *);
 static int utf8size(char *);
 static int isfullutf8(char *, int);
 
+static void *xmalloc(size_t);
+static void *xrealloc(void *, size_t);
+
 static void (*handler[LASTEvent])(XEvent *) = {
        [KeyPress] = kpress,
        [ClientMessage] = cmessage,
@@ -328,6 +342,7 @@ static void (*handler[LASTEvent])(XEvent *) = {
        [MotionNotify] = bmotion,
        [ButtonPress] = bpress,
        [ButtonRelease] = brelease,
+       [SelectionClear] = selclear,
        [SelectionNotify] = selnotify,
        [SelectionRequest] = selrequest,
 };
@@ -341,11 +356,28 @@ static STREscape strescseq;
 static int cmdfd;
 static pid_t pid;
 static Selection sel;
+static int iofd = -1;
 static char **opt_cmd  = NULL;
+static char *opt_io    = NULL;
 static char *opt_title = NULL;
 static char *opt_embed = NULL;
 static char *opt_class = NULL;
 
+void *
+xmalloc(size_t len) {
+       void *p = malloc(len);
+       if(!p)
+               die("Out of memory");
+       return p;
+}
+
+void *
+xrealloc(void *p, size_t len) {
+       if((p = realloc(p, len)) == NULL)
+               die("Out of memory");
+       return p;
+}
+
 int
 utf8decode(char *s, long *u) {
        uchar c;
@@ -503,7 +535,7 @@ mousereport(XEvent *e) {
        int state = e->xbutton.state;
        char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
        static int ob, ox, oy;
-       
+
        /* from urxvt */
        if(e->xbutton.type == MotionNotify) {
                if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
@@ -521,11 +553,11 @@ mousereport(XEvent *e) {
                        ox = x, oy = y;
                }
        }
-       
+
        buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
                + (state & Mod4Mask    ? 8  : 0)
                + (state & ControlMask ? 16 : 0);
-       
+
        ttywrite(buf, sizeof(buf));
 }
 
@@ -552,7 +584,7 @@ selcopy(void) {
 
        else {
                bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
-               ptr = str = malloc(bufsize);
+               ptr = str = xmalloc(bufsize);
 
                /* append every set & selected glyph to the selection */
                for(y = 0; y < term.row; y++) {
@@ -571,6 +603,7 @@ selcopy(void) {
                }
                *ptr = 0;
        }
+       sel.alt = IS_SET(MODE_ALTSCREEN);
        xsetsel(str);
 }
 
@@ -601,6 +634,14 @@ selpaste() {
        XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY, xw.win, CurrentTime);
 }
 
+void selclear(XEvent *e) {
+       if(sel.bx == -1)
+               return;
+       sel.bx = -1;
+       tsetdirt(sel.b.y, sel.e.y);
+       draw();
+}
+
 void
 selrequest(XEvent *e) {
        XSelectionRequestEvent *xsre;
@@ -729,6 +770,17 @@ execsh(void) {
        char **args;
        char *envshell = getenv("SHELL");
 
+       unsetenv("COLUMNS");
+       unsetenv("LINES");
+       unsetenv("TERMCAP");
+
+       signal(SIGCHLD, SIG_DFL);
+       signal(SIGHUP, SIG_DFL);
+       signal(SIGINT, SIG_DFL);
+       signal(SIGQUIT, SIG_DFL);
+       signal(SIGTERM, SIG_DFL);
+       signal(SIGALRM, SIG_DFL);
+
        DEFAULT(envshell, SHELL);
        putenv("TERM="TNAME);
        args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
@@ -750,7 +802,7 @@ sigchld(int a) {
 void
 ttynew(void) {
        int m, s;
-       
+
        /* seems to work fine on linux, openbsd and freebsd */
        struct winsize w = {term.row, term.col, 0, 0};
        if(openpty(&m, &s, NULL, NULL, &w) < 0)
@@ -775,6 +827,16 @@ ttynew(void) {
                close(s);
                cmdfd = m;
                signal(SIGCHLD, sigchld);
+               if(opt_io) {
+                       if(!strcmp(opt_io, "-")) {
+                               iofd = STDOUT_FILENO;
+                       } else {
+                               if((iofd = open(opt_io, O_WRONLY | O_CREAT, 0666)) < 0) {
+                                       fprintf(stderr, "Error opening %s:%s\n",
+                                               opt_io, strerror(errno));
+                               }
+                       }
+               }
        }
 }
 
@@ -827,7 +889,8 @@ ttyresize(int x, int y) {
 
        w.ws_row = term.row;
        w.ws_col = term.col;
-       w.ws_xpixel = w.ws_ypixel = 0;
+       w.ws_xpixel = xw.w;
+       w.ws_ypixel = xw.h;
        if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
                fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
 }
@@ -870,7 +933,7 @@ treset(void) {
        }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
 
        memset(term.tabs, 0, term.col * sizeof(*term.tabs));
-       for (i = TAB; i < term.col; i += TAB)
+       for(i = TAB; i < term.col; i += TAB)
                term.tabs[i] = 1;
        term.top = 0, term.bot = term.row - 1;
        term.mode = MODE_WRAP;
@@ -881,14 +944,14 @@ void
 tnew(int col, int row) {
        /* set screen size */
        term.row = row, term.col = col;
-       term.line = malloc(term.row * sizeof(Line));
-       term.alt  = malloc(term.row * sizeof(Line));
-       term.dirty = malloc(term.row * sizeof(*term.dirty));
-       term.tabs = malloc(term.col * sizeof(*term.tabs));
+       term.line = xmalloc(term.row * sizeof(Line));
+       term.alt  = xmalloc(term.row * sizeof(Line));
+       term.dirty = xmalloc(term.row * sizeof(*term.dirty));
+       term.tabs = xmalloc(term.col * sizeof(*term.tabs));
 
        for(row = 0; row < term.row; row++) {
-               term.line[row] = malloc(term.col * sizeof(Glyph));
-               term.alt [row] = malloc(term.col * sizeof(Glyph));
+               term.line[row] = xmalloc(term.col * sizeof(Glyph));
+               term.alt [row] = xmalloc(term.col * sizeof(Glyph));
                term.dirty[row] = 0;
        }
        memset(term.tabs, 0, term.col * sizeof(*term.tabs));
@@ -909,11 +972,11 @@ void
 tscrolldown(int orig, int n) {
        int i;
        Line temp;
-       
+
        LIMIT(n, 0, term.bot-orig+1);
 
        tclearregion(0, term.bot-n+1, term.col-1, term.bot);
-       
+
        for(i = term.bot; i >= orig+n; i--) {
                temp = term.line[i];
                term.line[i] = term.line[i-n];
@@ -931,9 +994,9 @@ tscrollup(int orig, int n) {
        int i;
        Line temp;
        LIMIT(n, 0, term.bot-orig+1);
-       
+
        tclearregion(0, orig, term.col-1, orig+n-1);
-       
+
        for(i = orig; i <= term.bot-n; i++) {
                 temp = term.line[i];
                 term.line[i] = term.line[i+n];
@@ -950,7 +1013,7 @@ void
 selscroll(int orig, int n) {
        if(sel.bx == -1)
                return;
-       
+
        if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
                if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
                        sel.bx = -1;
@@ -987,7 +1050,7 @@ csiparse(void) {
        csiescseq.narg = 0;
        if(*p == '?')
                csiescseq.priv = 1, p++;
-       
+
        while(p < csiescseq.buf+csiescseq.len) {
                while(isdigit(*p)) {
                        csiescseq.arg[csiescseq.narg] *= 10;
@@ -1046,7 +1109,7 @@ tdeletechar(int n) {
        int src = term.c.x + n;
        int dst = term.c.x;
        int size = term.col - src;
-       
+
        term.dirty[term.c.y] = 1;
 
        if(src >= term.col) {
@@ -1096,25 +1159,39 @@ 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);
+                       term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
+                                       | ATTR_ITALIC | ATTR_BLINK);
                        term.c.attr.fg = DefaultFG;
                        term.c.attr.bg = DefaultBG;
                        break;
                case 1:
                        term.c.attr.mode |= ATTR_BOLD;
                        break;
+               case 3: /* enter standout (highlight) */
+                       term.c.attr.mode |= ATTR_ITALIC;
+                       break;
                case 4:
                        term.c.attr.mode |= ATTR_UNDERLINE;
                        break;
+               case 5:
+                       term.c.attr.mode |= ATTR_BLINK;
+                       break;
                case 7:
                        term.c.attr.mode |= ATTR_REVERSE;
                        break;
+               case 21:
                case 22:
                        term.c.attr.mode &= ~ATTR_BOLD;
                        break;
+               case 23: /* leave standout (highlight) mode */
+                       term.c.attr.mode &= ~ATTR_ITALIC;
+                       break;
                case 24:
                        term.c.attr.mode &= ~ATTR_UNDERLINE;
                        break;
+               case 25:
+                       term.c.attr.mode &= ~ATTR_BLINK;
+                       break;
                case 27:
                        term.c.attr.mode &= ~ATTR_REVERSE;
                        break;
@@ -1127,7 +1204,7 @@ tsetattr(int *attr, int l) {
                                        fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
                        }
                        else
-                               fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
+                               fprintf(stderr, "erresc(38): gfx attr %d unknown\n", attr[i]);
                        break;
                case 39:
                        term.c.attr.fg = DefaultFG;
@@ -1141,7 +1218,7 @@ tsetattr(int *attr, int l) {
                                        fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
                        }
                        else
-                               fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
+                               fprintf(stderr, "erresc(48): gfx attr %d unknown\n", attr[i]);
                        break;
                case 49:
                        term.c.attr.bg = DefaultBG;
@@ -1154,10 +1231,9 @@ tsetattr(int *attr, int l) {
                        else if(BETWEEN(attr[i], 90, 97))
                                term.c.attr.fg = attr[i] - 90 + 8;
                        else if(BETWEEN(attr[i], 100, 107))
-                               term.c.attr.fg = attr[i] - 100 + 8;
+                               term.c.attr.bg = attr[i] - 100 + 8;
                        else
-                               fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]), csidump();
-                       
+                               fprintf(stderr, "erresc(default): gfx attr %d unknown\n", attr[i]), csidump();
                        break;
                }
        }
@@ -1178,6 +1254,79 @@ tsetscroll(int t, int b) {
        term.bot = b;
 }
 
+#define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
+
+void
+tsetmode(bool priv, bool set, int *args, int narg) {
+       int *lim, mode;
+
+       for(lim = args + narg; args < lim; ++args) {
+               if(priv) {
+                       switch(*args) {
+                       case 1:
+                               MODBIT(term.mode, set, MODE_APPKEYPAD);
+                               break;
+                       case 5: /* DECSCNM -- Reverve video */
+                               mode = term.mode;
+                               MODBIT(term.mode,set, MODE_REVERSE);
+                               if(mode != term.mode)
+                                       redraw();
+                               break;
+                       case 7:
+                               MODBIT(term.mode, set, MODE_WRAP);
+                               break;
+                       case 20:
+                               MODBIT(term.mode, set, MODE_CRLF);
+                               break;
+                       case 12: /* att610 -- Start blinking cursor (IGNORED) */
+                               break;
+                       case 25:
+                               MODBIT(term.c.state, !set, CURSOR_HIDE);
+                               break;
+                       case 1000: /* 1000,1002: enable xterm mouse report */
+                               MODBIT(term.mode, set, MODE_MOUSEBTN);
+                               break;
+                       case 1002:
+                               MODBIT(term.mode, set, MODE_MOUSEMOTION);
+                               break;
+                       case 1049: /* = 1047 and 1048 */
+                       case 47:
+                       case 1047:
+                               if(IS_SET(MODE_ALTSCREEN))
+                                       tclearregion(0, 0, term.col-1, term.row-1);
+                               if((set && !IS_SET(MODE_ALTSCREEN)) ||
+                                   (!set && IS_SET(MODE_ALTSCREEN))) {
+                                           tswapscreen();
+                               }
+                               if(*args != 1049)
+                                       break;
+                               /* pass through */
+                       case 1048:
+                               tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
+                               break;
+                       default:
+                               fprintf(stderr,
+                                       "erresc: unknown private set/reset mode %d\n",
+                                       *args);
+                               break;
+                       }
+               } else {
+                       switch(*args) {
+                       case 4:
+                               MODBIT(term.mode, set, MODE_INSERT);
+                               break;
+                       default:
+                               fprintf(stderr,
+                                       "erresc: unknown set/reset mode %d\n",
+                                       *args);
+                               break;
+                       }
+               }
+       }
+}
+#undef MODBIT
+
+
 void
 csihandle(void) {
        switch(csiescseq.mode) {
@@ -1230,19 +1379,19 @@ csihandle(void) {
                }
                break;
        case 'G': /* CHA -- Move to <col> */
-       case '`': /* XXX: HPA -- same? */
+       case '`': /* HPA */
                DEFAULT(csiescseq.arg[0], 1);
                tmoveto(csiescseq.arg[0]-1, term.c.y);
                break;
        case 'H': /* CUP -- Move to <row> <col> */
-       case 'f': /* XXX: HVP -- same? */
+       case 'f': /* HVP */
                DEFAULT(csiescseq.arg[0], 1);
                DEFAULT(csiescseq.arg[1], 1);
                tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
                break;
        case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
                DEFAULT(csiescseq.arg[0], 1);
-               while (csiescseq.arg[0]--)
+               while(csiescseq.arg[0]--)
                        tputtab(1);
                break;
        case 'J': /* ED -- Clear screen */
@@ -1291,58 +1440,7 @@ csihandle(void) {
                tinsertblankline(csiescseq.arg[0]);
                break;
        case 'l': /* RM -- Reset Mode */
-               if(csiescseq.priv) {
-                       switch(csiescseq.arg[0]) {
-                       case 1:
-                               term.mode &= ~MODE_APPKEYPAD;
-                               break;
-                       case 5: /* DECSCNM -- Remove reverse video */
-                               if(IS_SET(MODE_REVERSE)) {
-                                       term.mode &= ~MODE_REVERSE;
-                                       draw();
-                               }
-                               break;
-                       case 7:
-                               term.mode &= ~MODE_WRAP;
-                               break;
-                       case 12: /* att610 -- Stop blinking cursor (IGNORED) */
-                               break;
-                       case 20:
-                               term.mode &= ~MODE_CRLF;
-                               break;
-                       case 25:
-                               term.c.state |= CURSOR_HIDE;
-                               break;
-                       case 1000: /* disable X11 xterm mouse reporting */
-                               term.mode &= ~MODE_MOUSEBTN;
-                               break;
-                       case 1002:
-                               term.mode &= ~MODE_MOUSEMOTION;
-                               break;
-                       case 1049: /* = 1047 and 1048 */
-                       case 47:
-                       case 1047:
-                               if(IS_SET(MODE_ALTSCREEN)) {
-                                       tclearregion(0, 0, term.col-1, term.row-1);
-                                       tswapscreen();
-                               }
-                               if(csiescseq.arg[0] != 1049)
-                                       break;
-                       case 1048:
-                               tcursor(CURSOR_LOAD);
-                               break;
-                       default:
-                               goto unknown;
-                       }
-               } else {
-                       switch(csiescseq.arg[0]) {
-                       case 4:
-                               term.mode &= ~MODE_INSERT;
-                               break;
-                       default:
-                               goto unknown;
-                       }
-               }
+               tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
                break;
        case 'M': /* DL -- Delete <n> lines */
                DEFAULT(csiescseq.arg[0], 1);
@@ -1358,7 +1456,7 @@ csihandle(void) {
                break;
        case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
                DEFAULT(csiescseq.arg[0], 1);
-               while (csiescseq.arg[0]--)
+               while(csiescseq.arg[0]--)
                        tputtab(0);
                break;
        case 'd': /* VPA -- Move to <row> */
@@ -1366,58 +1464,7 @@ csihandle(void) {
                tmoveto(term.c.x, csiescseq.arg[0]-1);
                break;
        case 'h': /* SM -- Set terminal mode */
-               if(csiescseq.priv) {
-                       switch(csiescseq.arg[0]) {
-                       case 1:
-                               term.mode |= MODE_APPKEYPAD;
-                               break;
-                       case 5: /* DECSCNM -- Reverve video */
-                               if(!IS_SET(MODE_REVERSE)) {
-                                       term.mode |= MODE_REVERSE;
-                                       draw();
-                               }
-                               break;
-                       case 7:
-                               term.mode |= MODE_WRAP;
-                               break;
-                       case 20:
-                               term.mode |= MODE_CRLF;
-                               break;
-                       case 12: /* att610 -- Start blinking cursor (IGNORED) */
-                                /* fallthrough for xterm cvvis = CSI [ ? 12 ; 25 h */
-                               if(csiescseq.narg > 1 && csiescseq.arg[1] != 25)
-                                       break;
-                       case 25:
-                               term.c.state &= ~CURSOR_HIDE;
-                               break;
-                       case 1000: /* 1000,1002: enable xterm mouse report */
-                               term.mode |= MODE_MOUSEBTN;
-                               break;
-                       case 1002:
-                               term.mode |= MODE_MOUSEMOTION;
-                               break;
-                       case 1049: /* = 1047 and 1048 */
-                       case 47:
-                       case 1047:
-                               if(IS_SET(MODE_ALTSCREEN))
-                                       tclearregion(0, 0, term.col-1, term.row-1);
-                               else
-                                       tswapscreen();
-                               if(csiescseq.arg[0] != 1049)
-                                       break;
-                       case 1048:
-                               tcursor(CURSOR_SAVE);
-                               break;
-                       default: goto unknown;
-                       }
-               } else {
-                       switch(csiescseq.arg[0]) {
-                       case 4:
-                               term.mode |= MODE_INSERT;
-                               break;
-                       default: goto unknown;
-                       }
-               };
+               tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
                break;
        case 'm': /* SGR -- Terminal attribute (color) */
                tsetattr(csiescseq.arg, csiescseq.narg);
@@ -1470,7 +1517,7 @@ strhandle(void) {
         */
        strparse();
 
-       p = strescseq.buf; 
+       p = strescseq.buf;
 
        switch(strescseq.type) {
        case ']': /* OSC -- Operating System Command */
@@ -1496,6 +1543,9 @@ strhandle(void) {
                        break;
                }
                break;
+       case 'k': /* old title set compatibility */
+               XStoreName(xw.dpy, xw.win, strescseq.buf);
+               break;
        case 'P': /* DSC -- Device Control String */
        case '_': /* APC -- Application Program Command */
        case '^': /* PM -- Privacy Message */
@@ -1540,15 +1590,15 @@ void
 tputtab(bool forward) {
        unsigned x = term.c.x;
 
-       if (forward) {
-               if (x == term.col)
+       if(forward) {
+               if(x == term.col)
                        return;
-               for (++x; x < term.col && !term.tabs[x]; ++x)
+               for(++x; x < term.col && !term.tabs[x]; ++x)
                        /* nothing */ ;
        } else {
-               if (x == 0)
+               if(x == 0)
                        return;
-               for (--x; x > 0 && !term.tabs[x]; --x)
+               for(--x; x > 0 && !term.tabs[x]; --x)
                        /* nothing */ ;
        }
        tmoveto(x, term.c.y);
@@ -1557,6 +1607,10 @@ tputtab(bool forward) {
 void
 tputc(char *c) {
        char ascii = *c;
+
+       if(iofd != -1)
+               write(iofd, c, 1);
+
        if(term.esc & ESC_START) {
                if(term.esc & ESC_CSI) {
                        csiescseq.buf[csiescseq.len++] = ascii;
@@ -1575,7 +1629,7 @@ tputc(char *c) {
                                break;
                        default:
                                strescseq.buf[strescseq.len++] = ascii;
-                               if (strescseq.len+1 >= STR_BUF_SIZ) {
+                               if(strescseq.len+1 >= STR_BUF_SIZ) {
                                        term.esc = 0;
                                        strhandle();
                                }
@@ -1605,6 +1659,7 @@ tputc(char *c) {
                        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;
@@ -1637,6 +1692,7 @@ tputc(char *c) {
                        case 'c': /* RIS -- Reset to inital state */
                                treset();
                                term.esc = 0;
+                               xresettitle();
                                break;
                        case '=': /* DECPAM -- Application keypad */
                                term.mode |= MODE_APPKEYPAD;
@@ -1667,6 +1723,8 @@ tputc(char *c) {
                if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
                        sel.bx = -1;
                switch(ascii) {
+               case '\0': /* padding character, do nothing */
+                       break;
                case '\t':
                        tputtab(1);
                        break;
@@ -1731,16 +1789,16 @@ tresize(int col, int row) {
        }
 
        /* resize to new height */
-       term.line = realloc(term.line, row * sizeof(Line));
-       term.alt  = realloc(term.alt,  row * sizeof(Line));
-       term.dirty = realloc(term.dirty, row * sizeof(*term.dirty));
-       term.tabs = realloc(term.tabs, col * sizeof(*term.tabs));
+       term.line = xrealloc(term.line, row * sizeof(Line));
+       term.alt  = xrealloc(term.alt,  row * sizeof(Line));
+       term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
+       term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
 
        /* resize each row to new width, zero-pad if needed */
        for(i = 0; i < minrow; i++) {
                term.dirty[i] = 1;
-               term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
-               term.alt[i]  = realloc(term.alt[i],  col * sizeof(Glyph));
+               term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
+               term.alt[i]  = xrealloc(term.alt[i],  col * sizeof(Glyph));
                for(x = mincol; x < col; x++) {
                        term.line[i][x].state = 0;
                        term.alt[i][x].state = 0;
@@ -1753,13 +1811,13 @@ tresize(int col, int row) {
                term.line[i] = calloc(col, sizeof(Glyph));
                term.alt [i] = calloc(col, sizeof(Glyph));
        }
-       if (col > term.col) {
+       if(col > term.col) {
                bool *bp = term.tabs + term.col;
 
                memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
-               while (--bp > term.tabs && !*bp)
+               while(--bp > term.tabs && !*bp)
                        /* nothing */ ;
-               for (bp += TAB; bp < term.tabs + col; bp += TAB)
+               for(bp += TAB; bp < term.tabs + col; bp += TAB)
                        *bp = 1;
        }
        /* update terminal size */
@@ -1794,7 +1852,7 @@ xloadcols(void) {
                } else
                        dc.col[i] = color.pixel;
        }
-       
+
        /* load colors [16-255] ; same colors as xterm */
        for(i = 16, r = 0; r < 6; r++)
                for(g = 0; g < 6; g++)
@@ -1812,7 +1870,7 @@ xloadcols(void) {
 
        for(r = 0; r < 24; r++, i++) {
                color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
-               if (!XAllocColor(xw.dpy, xw.cmap, &color)) {
+               if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
                        dc.col[i] = white;
                        fprintf(stderr, "Could not allocate color %d\n", i);
                } else
@@ -1832,16 +1890,25 @@ void
 xhints(void) {
        XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
        XWMHints wm = {.flags = InputHint, .input = 1};
-       XSizeHints size = {
-               .flags = PSize | PResizeInc | PBaseSize,
-               .height = xw.h,
-               .width = xw.w,
-               .height_inc = xw.ch,
-               .width_inc = xw.cw,
-               .base_height = 2*BORDER,
-               .base_width = 2*BORDER,
-       };
-       XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
+       XSizeHints *sizeh = NULL;
+
+       sizeh = XAllocSizeHints();
+       if(xw.isfixed == False) {
+               sizeh->flags = PSize | PResizeInc | PBaseSize;
+               sizeh->height = xw.h;
+               sizeh->width = xw.w;
+               sizeh->height_inc = xw.ch;
+               sizeh->width_inc = xw.cw;
+               sizeh->base_height = 2*BORDER;
+               sizeh->base_width = 2*BORDER;
+       } else {
+               sizeh->flags = PMaxSize | PMinSize;
+               sizeh->min_width = sizeh->max_width = xw.fw;
+               sizeh->min_height = sizeh->max_height = xw.fh;
+       }
+
+       XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
+       XFree(sizeh);
 }
 
 XFontSet
@@ -1878,14 +1945,24 @@ xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rb
 }
 
 void
-initfonts(char *fontstr, char *bfontstr) {
-       if((dc.font.set = xinitfont(fontstr)) == NULL ||
-          (dc.bfont.set = xinitfont(bfontstr)) == NULL)
-               die("Can't load font %s\n", dc.font.set ? BOLDFONT : FONT);
+initfonts(char *fontstr, char *bfontstr, char *ifontstr, char *ibfontstr) {
+       if((dc.font.set = xinitfont(fontstr)) == NULL)
+               die("Can't load font %s\n", fontstr);
+       if((dc.bfont.set = xinitfont(bfontstr)) == NULL)
+               die("Can't load bfont %s\n", bfontstr);
+       if((dc.ifont.set = xinitfont(ifontstr)) == NULL)
+               die("Can't load ifont %s\n", ifontstr);
+       if((dc.ibfont.set = xinitfont(ibfontstr)) == NULL)
+               die("Can't load ibfont %s\n", ibfontstr);
+
        xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
            &dc.font.lbearing, &dc.font.rbearing);
        xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
            &dc.bfont.lbearing, &dc.bfont.rbearing);
+       xgetfontinfo(dc.ifont.set, &dc.ifont.ascent, &dc.ifont.descent,
+           &dc.ifont.lbearing, &dc.ifont.rbearing);
+       xgetfontinfo(dc.ibfont.set, &dc.ibfont.ascent, &dc.ibfont.descent,
+           &dc.ibfont.lbearing, &dc.ibfont.rbearing);
 }
 
 void
@@ -1893,13 +1970,14 @@ xinit(void) {
        XSetWindowAttributes attrs;
        Cursor cursor;
        Window parent;
+       int sw, sh;
 
        if(!(xw.dpy = XOpenDisplay(NULL)))
                die("Can't open display\n");
        xw.scr = XDefaultScreen(xw.dpy);
-       
+
        /* font */
-       initfonts(FONT, BOLDFONT);
+       initfonts(FONT, BOLDFONT, ITALICFONT, ITALICBOLDFONT);
 
        /* XXX: Assuming same size for bold font */
        xw.cw = dc.font.rbearing - dc.font.lbearing;
@@ -1909,21 +1987,35 @@ xinit(void) {
        xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
        xloadcols();
 
-       /* window - default size */
-       xw.h = 2*BORDER + term.row * xw.ch;
-       xw.w = 2*BORDER + term.col * xw.cw;
+       /* adjust fixed window geometry */
+       if(xw.isfixed) {
+               sw = DisplayWidth(xw.dpy, xw.scr);
+               sh = DisplayHeight(xw.dpy, xw.scr);
+               if(xw.fx < 0)
+                       xw.fx = sw + xw.fx - xw.fw - 1;
+               if(xw.fy < 0)
+                       xw.fy = sh + xw.fy - xw.fh - 1;
+
+               xw.h = xw.fh;
+               xw.w = xw.fw;
+       } else {
+               /* window - default size */
+               xw.h = 2*BORDER + term.row * xw.ch;
+               xw.w = 2*BORDER + term.col * xw.cw;
+               xw.fx = 0;
+               xw.fy = 0;
+       }
 
        attrs.background_pixel = dc.col[DefaultBG];
        attrs.border_pixel = dc.col[DefaultBG];
        attrs.bit_gravity = NorthWestGravity;
        attrs.event_mask = FocusChangeMask | KeyPressMask
                | ExposureMask | VisibilityChangeMask | StructureNotifyMask
-               | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask
-               | EnterWindowMask | LeaveWindowMask;
+               | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
        attrs.colormap = xw.cmap;
 
        parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
-       xw.win = XCreateWindow(xw.dpy, parent, 0, 0,
+       xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
                        xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
                        XDefaultVisual(xw.dpy, xw.scr),
                        CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
@@ -1939,7 +2031,7 @@ xinit(void) {
                                           XNFocusWindow, xw.win, NULL);
        /* gc */
        dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
-       
+
        /* white cursor, black outline */
        cursor = XCreateFontCursor(xw.dpy, XC_xterm);
        XDefineCursor(xw.dpy, xw.win, cursor);
@@ -1949,7 +2041,7 @@ xinit(void) {
 
        xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
 
-       XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
+       xresettitle();
        XMapWindow(xw.dpy, xw.win);
        xhints();
        XSync(xw.dpy, 0);
@@ -1961,7 +2053,7 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
        int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
        XFontSet fontset = dc.font.set;
        int i;
-       
+
        /* only switch default fg/bg if term is in RV mode */
        if(IS_SET(MODE_REVERSE)) {
                if(fg == DefaultFG)
@@ -1978,6 +2070,11 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
                fontset = dc.bfont.set;
        }
 
+       if(base.mode & ATTR_ITALIC)
+               fontset = dc.ifont.set;
+       if(base.mode & (ATTR_ITALIC|ATTR_ITALIC))
+               fontset = dc.ibfont.set;
+
        XSetBackground(xw.dpy, dc.gc, dc.col[bg]);
        XSetForeground(xw.dpy, dc.gc, dc.col[fg]);
 
@@ -1992,7 +2089,7 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
        }
 
        XmbDrawImageString(xw.dpy, xw.buf, fontset, dc.gc, winx, winy, s, bytelen);
-       
+
        if(base.mode & ATTR_UNDERLINE)
                XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
 }
@@ -2002,7 +2099,6 @@ void
 xcopy() {
        XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
        XdbeSwapBuffers(xw.dpy, swpinfo, 1);
-
 }
 
 void
@@ -2011,10 +2107,10 @@ xdrawcursor(void) {
        static int oldy = 0;
        int sl;
        Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
-       
+
        LIMIT(oldx, 0, term.col-1);
        LIMIT(oldy, 0, term.row-1);
-       
+
        if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
                memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
 
@@ -2025,7 +2121,7 @@ xdrawcursor(void) {
        } else
                xclear(oldx, oldy, oldx, oldy);
 
-       xcopy(oldx, oldy, 1, 1);
+       xcopy();
 
        /* draw the new one */
        if(!(term.c.state & CURSOR_HIDE)) {
@@ -2040,7 +2136,20 @@ xdrawcursor(void) {
                oldx = term.c.x, oldy = term.c.y;
        }
 
-       xcopy(term.c.x, term.c.y, 1, 1);
+       xcopy();
+}
+
+void
+xresettitle(void) {
+       XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
+}
+
+void
+redraw(void) {
+       struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
+       tfulldirt();
+       draw();
+       nanosleep(&tv, NULL);
 }
 
 void
@@ -2055,7 +2164,10 @@ drawregion(int x1, int y1, int x2, int y2) {
        int ic, ib, x, y, ox, sl;
        Glyph base, new;
        char buf[DRAW_BUF_SIZ];
+       bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
 
+       if((sel.alt && !alt) || (!sel.alt && alt))
+               ena_sel = 0;
        if(!(xw.state & WIN_VISIBLE))
                return;
 
@@ -2068,7 +2180,7 @@ drawregion(int x1, int y1, int x2, int y2) {
                ic = ib = ox = 0;
                for(x = x1; x < x2; x++) {
                        new = term.line[y][x];
-                       if(sel.bx != -1 && *(new.c) && selected(x, y))
+                       if(ena_sel && *(new.c) && selected(x, y))
                                new.mode ^= ATTR_REVERSE;
                        if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
                                                  ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
@@ -2161,7 +2273,7 @@ kpress(XEvent *ev) {
        meta = e->state & Mod1Mask;
        shift = e->state & ShiftMask;
        len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
-       
+
        /* 1. custom keys from config.h */
        if((customkey = kmap(ksym, e->state)))
                ttywrite(customkey, strlen(customkey));
@@ -2201,11 +2313,11 @@ void
 cmessage(XEvent *e) {
        /* See xembed specs
           http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
-       if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
-               if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
+       if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
+               if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
                        xw.state |= WIN_FOCUSED;
                        xseturgency(0);
-               } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
+               } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
                        xw.state &= ~WIN_FOCUSED;
                }
                draw();
@@ -2215,10 +2327,10 @@ cmessage(XEvent *e) {
 void
 resize(XEvent *e) {
        int col, row;
-       
+
        if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
                return;
-       
+
        xw.w = e->xconfigure.width;
        xw.h = e->xconfigure.height;
        col = (xw.w - 2*BORDER) / xw.cw;
@@ -2227,8 +2339,8 @@ resize(XEvent *e) {
                return;
        if(tresize(col, row))
                draw();
-       ttyresize(col, row);
        xresize(col, row);
+       ttyresize(col, row);
 }
 
 bool
@@ -2245,7 +2357,7 @@ run(void) {
        int xfd = XConnectionNumber(xw.dpy);
        struct timeval timeout = {0};
        bool stuff_to_print = 0;
-       
+
        for(;;) {
                FD_ZERO(&rfd);
                FD_SET(cmdfd, &rfd);
@@ -2279,8 +2391,12 @@ run(void) {
 
 int
 main(int argc, char *argv[]) {
-       int i;
-       
+       int i, bitm, xr, yr;
+       unsigned int wr, hr;
+
+       xw.fw = xw.fh = xw.fx = xw.fy = 0;
+       xw.isfixed = False;
+
        for(i = 1; i < argc; i++) {
                switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
                case 't':
@@ -2292,10 +2408,34 @@ main(int argc, char *argv[]) {
                case 'w':
                        if(++i < argc) opt_embed = argv[i];
                        break;
+               case 'f':
+                       if(++i < argc) opt_io = argv[i];
+                       break;
                case 'e':
                        /* eat every remaining arguments */
                        if(++i < argc) opt_cmd = &argv[i];
                        goto run;
+               case 'g':
+                       if(++i >= argc)
+                               break;
+
+                       bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
+                       if(bitm & XValue)
+                               xw.fx = xr;
+                       if(bitm & YValue)
+                               xw.fy = yr;
+                       if(bitm & WidthValue)
+                               xw.fw = (int)wr;
+                       if(bitm & HeightValue)
+                               xw.fh = (int)hr;
+                       if(bitm & XNegative && xw.fx == 0)
+                               xw.fx = -1;
+                       if(bitm & XNegative && xw.fy == 0)
+                               xw.fy = -1;
+
+                       if(xw.fh != 0 && xw.fw != 0)
+                               xw.isfixed = True;
+                       break;
                case 'v':
                default:
                        die(USAGE);
@@ -2311,3 +2451,4 @@ main(int argc, char *argv[]) {
        run();
        return 0;
 }
+