X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=st.c;h=ab43a43b88db487ef0bb85cec68eadc778726c84;hb=c43526153fbe368351f6139f5e672e1798f6d2f1;hp=f42797f0967138e854ebcdc1931f63a7fcb76e81;hpb=ae5baac932af877cb18df6853d45f033ed9b270f;p=st.git

diff --git a/st.c b/st.c
index f42797f..ab43a43 100644
--- a/st.c
+++ b/st.c
@@ -28,6 +28,10 @@
  #include <libutil.h>
 #endif
 
+#define USAGE \
+	"st-" VERSION ", (c) 2010 st engineers\n" \
+	"usage: st [-t title] [-e cmd] [-v]\n"
+
 /* Arbitrary sizes */
 #define ESC_TITLE_SIZ 256
 #define ESC_BUF_SIZ   256
@@ -50,7 +54,7 @@ enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT,
        CURSOR_SAVE, CURSOR_LOAD };
 enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
 enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
-enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4 };
+enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8 };
 enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
 enum { SCREEN_UPDATE, SCREEN_REDRAW };
 
@@ -86,7 +90,8 @@ typedef struct {
 typedef struct {
 	int row;	/* nb row */  
 	int col;	/* nb col */
-	Line* line; /* screen */
+	Line* line;	/* screen */
+	Line* alt;	/* alternate screen */
 	TCursor c;	/* cursor */
 	int top;	/* top	  scroll limit */
 	int bot;	/* bottom scroll limit */
@@ -124,6 +129,15 @@ typedef struct {
 	GC gc;
 } DC;
 
+/* TODO: use better name for vars... */
+typedef struct {
+	int mode;
+	int bx, by;
+	int ex, ey;
+	struct {int x, y;}  b, e;
+	char *clip;
+} Selection;
+
 #include "config.h"
 
 static void die(const char *errstr, ...);
@@ -151,11 +165,12 @@ static void tputc(char);
 static void tputs(char*, int);
 static void treset(void);
 static void tresize(int, int);
-static void tscrollup(int);
-static void tscrolldown(int);
+static void tscrollup(int, int);
+static void tscrolldown(int, int);
 static void tsetattr(int*, int);
 static void tsetchar(char);
 static void tsetscroll(int, int);
+static void tswapscreen(void);
 
 static void ttynew(void);
 static void ttyread(void);
@@ -175,6 +190,9 @@ static char* kmap(KeySym);
 static void kpress(XEvent *);
 static void resize(XEvent *);
 static void focus(XEvent *);
+static void brelease(XEvent *);
+static void bpress(XEvent *);
+static void bmotion(XEvent *);
 
 
 static void (*handler[LASTEvent])(XEvent *) = {
@@ -183,6 +201,9 @@ static void (*handler[LASTEvent])(XEvent *) = {
 	[ConfigureNotify] = resize,
 	[FocusIn] = focus,
 	[FocusOut] = focus,
+	[MotionNotify] = bmotion,
+	[ButtonPress] = bpress,
+	[ButtonRelease] = brelease,
 };
 
 /* Globals */
@@ -192,6 +213,95 @@ static Term term;
 static CSIEscape escseq;
 static int cmdfd;
 static pid_t pid;
+static Selection sel;
+static char *opt_cmd   = NULL;
+static char *opt_title = NULL;
+
+void
+selinit(void) {
+	sel.mode = 0;
+	sel.bx = -1;
+	sel.clip = NULL;
+}
+
+static inline int selected(int x, int y) {
+	if(sel.ey == y && sel.by == y) {
+		int bx = MIN(sel.bx, sel.ex);
+		int ex = MAX(sel.bx, sel.ex);
+		return BETWEEN(x, bx, ex);
+	}
+	return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x)) 
+		|| (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
+}
+
+static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
+	if(b) *b = e->xbutton.state,
+		*b=*b==4096?5:*b==2048?4:*b==1024?3:*b==512?2:*b==256?1:-1;
+	*x = e->xbutton.x/xw.cw;
+	*y = e->xbutton.y/xw.ch;
+	sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
+	sel.b.y = MIN(sel.by, sel.ey);
+	sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
+	sel.e.y = MAX(sel.by, sel.ey);
+}
+
+static void bpress(XEvent *e) {
+	sel.mode = 1;
+	sel.ex = sel.bx = e->xbutton.x/xw.cw;
+	sel.ey = sel.by = e->xbutton.y/xw.ch;
+}
+
+static char *getseltext() {
+	char *str, *ptr;
+	int ls, x, y, sz;
+	if(sel.bx == -1)
+		return NULL;
+	sz = (term.col+1) * (sel.e.y-sel.b.y+1);
+	ptr = str = malloc(sz);
+	for(y = 0; y < term.row; y++) {
+		for(x = 0; x < term.col; x++)
+			if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y)))
+				*ptr = term.line[y][x].c, ptr++;
+		if(ls)
+			*ptr = '\n', ptr++;
+	}
+	*ptr = 0;
+	return str;
+}
+
+/* TODO: use X11 clipboard */
+static void selcopy(char *str) {
+	free(sel.clip);
+	sel.clip = str;
+}
+
+static void selpaste() {
+	if(sel.clip)
+		ttywrite(sel.clip, strlen(sel.clip));
+}
+
+/* TODO: doubleclick to select word */
+static void brelease(XEvent *e) {
+	int b;
+	sel.mode = 0;
+	getbuttoninfo(e, &b, &sel.ex, &sel.ey);
+	if(sel.bx==sel.ex && sel.by==sel.ey) {
+		sel.bx = -1;
+		if(b==2)
+			selpaste();
+	} else {
+		if(b==1)
+			selcopy(getseltext());
+	}
+	draw(1);
+}
+
+static void bmotion(XEvent *e) {
+	if (sel.mode) {
+		getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
+		draw(1);
+	}
+}
 
 #ifdef DEBUG
 void
@@ -225,9 +335,12 @@ die(const char *errstr, ...) {
 
 void
 execsh(void) {
-	char *args[3] = {getenv("SHELL"), "-i", NULL};
-	DEFAULT(args[0], "/bin/sh"); /* if getenv() failed */
-	putenv("TERM=" TNAME);
+	char *args[] = {getenv("SHELL"), "-i", NULL};
+	if(opt_cmd)
+		args[0] = opt_cmd, args[1] = NULL;
+	else
+		DEFAULT(args[0], SHELL);
+	putenv("TERM="TNAME);
 	execvp(args[0], args);
 }
 
@@ -283,10 +396,10 @@ dump(char c) {
 
 void
 ttyread(void) {
-	char buf[BUFSIZ] = {0};
+	char buf[BUFSIZ];
 	int ret;
 
-	if((ret = read(cmdfd, buf, BUFSIZ)) < 0)
+	if((ret = read(cmdfd, buf, LEN(buf))) < 0)
 		die("Couldn't read from shell: %s\n", SERRNO);
 	else
 		tputs(buf, ret);
@@ -337,23 +450,33 @@ tnew(int col, int row) {
 	/* set screen size */
 	term.row = row, term.col = col;
 	term.line = malloc(term.row * sizeof(Line));
-	for(row = 0 ; row < term.row; row++)
+	term.alt  = malloc(term.row * sizeof(Line));
+	for(row = 0 ; row < term.row; row++) {
 		term.line[row] = malloc(term.col * sizeof(Glyph));
+		term.alt [row] = malloc(term.col * sizeof(Glyph));
+	}
 	/* setup screen */
 	treset();
 }
 
 void
-tscrolldown (int n) {
+tswapscreen(void) {
+	Line* tmp = term.line;
+	term.line = term.alt;
+	term.alt = tmp;
+	term.mode ^= MODE_ALTSCREEN;
+}
+
+void
+tscrolldown(int orig, int n) {
 	int i;
 	Line temp;
 	
-	LIMIT(n, 0, term.bot-term.top+1);
+	LIMIT(n, 0, term.bot-orig+1);
 
-	for(i = 0; i < n; i++)
-		memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
+	tclearregion(0, term.bot-n+1, term.col-1, term.bot);
 	
-	for(i = term.bot; i >= term.top+n; i--) {
+	for(i = term.bot; i >= orig+n; i--) {
 		temp = term.line[i];
 		term.line[i] = term.line[i-n];
 		term.line[i-n] = temp;
@@ -361,15 +484,14 @@ tscrolldown (int n) {
 }
 
 void
-tscrollup (int n) {
+tscrollup(int orig, int n) {
 	int i;
 	Line temp;
-	LIMIT(n, 0, term.bot-term.top+1);
+	LIMIT(n, 0, term.bot-orig+1);
 	
-	for(i = 0; i < n; i++)
-		memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
+	tclearregion(0, orig, term.col-1, orig+n-1);
 	
-	for(i = term.top; i <= term.bot-n; i++) { 
+	for(i = orig; i <= term.bot-n; i++) { 
 		 temp = term.line[i];
 		 term.line[i] = term.line[i+n]; 
 		 term.line[i+n] = temp;
@@ -378,9 +500,11 @@ tscrollup (int n) {
 
 void
 tnewline(void) {
-	int y = term.c.y + 1;
-	if(y > term.bot)
-		tscrollup(1), y = term.bot;
+	int y = term.c.y;
+	if(term.c.y == term.bot)
+		tscrollup(term.top, 1);
+	else
+		y++;
 	tmoveto(0, y);
 }
 
@@ -472,50 +596,18 @@ tinsertblank(int n) {
 
 void
 tinsertblankline(int n) {
-	int i;
-	Line blank;
-	int bot = term.bot;
-
-	if(term.c.y > term.bot)
-		bot = term.row - 1;
-	else if(term.c.y < term.top)
-		bot = term.top - 1;
-	if(term.c.y + n >= bot) {
-		tclearregion(0, term.c.y, term.col-1, bot);
+	if(term.c.y < term.top || term.c.y > term.bot)
 		return;
-	}
-	for(i = bot; i >= term.c.y+n; i--) {
-		/* swap deleted line <-> blanked line */
-		blank = term.line[i];
-		term.line[i] = term.line[i-n];
-		term.line[i-n] = blank;
-		/* blank it */
-		memset(blank, 0, term.col * sizeof(Glyph));
-	}
+
+	tscrolldown(term.c.y, n);
 }
 
 void
 tdeleteline(int n) {
-	int i;
-	Line blank;
-	int bot = term.bot;
-
-	if(term.c.y > term.bot)
-		bot = term.row - 1;
-	else if(term.c.y < term.top)
-		bot = term.top - 1;
-	if(term.c.y + n >= bot) {
-		tclearregion(0, term.c.y, term.col-1, bot);
+	if(term.c.y < term.top || term.c.y > term.bot)
 		return;
-	}
-	for(i = term.c.y; i <= bot-n; i++) {
-		/* swap deleted line <-> blanked line */
-		blank = term.line[i];
-		term.line[i] = term.line[i+n];
-		term.line[i+n] = blank;
-		/* blank it */
-		memset(blank, 0, term.col * sizeof(Glyph));
-	}
+
+	tscrollup(term.c.y, n);
 }
 
 void
@@ -585,7 +677,8 @@ tsetattr(int *attr, int l) {
 			else if(BETWEEN(attr[i], 100, 107))
 				term.c.attr.fg = attr[i] - 100 + 8;
 			else 
-				fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]); 
+				fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]), csidump();
+			
 			break;
 		}
 	}
@@ -668,7 +761,6 @@ csihandle(void) {
 		case 2: /* all */
 			tclearregion(0, 0, term.col-1, term.row-1);
 			break;
-		case 3: /* XXX: erase saved lines (xterm) */
 		default:
 			goto unknown;
 		}
@@ -688,11 +780,11 @@ csihandle(void) {
 		break;
 	case 'S': /* SU -- Scroll <n> line up */
 		DEFAULT(escseq.arg[0], 1);
-		tscrollup(escseq.arg[0]);
+		tscrollup(term.top, escseq.arg[0]);
 		break;
 	case 'T': /* SD -- Scroll <n> line down */
 		DEFAULT(escseq.arg[0], 1);
-		tscrolldown(escseq.arg[0]);
+		tscrolldown(term.top, escseq.arg[0]);
 		break;
 	case 'L': /* IL -- Insert <n> blank lines */
 		DEFAULT(escseq.arg[0], 1);
@@ -712,10 +804,16 @@ csihandle(void) {
 			case 25:
 				term.c.state |= CURSOR_HIDE;
 				break;
-			case 1048: /* XXX: no alt. screen to erase/save */
-			case 1049:
+			case 1049: /* = 1047 and 1048 */
+			case 1047:
+				if(IS_SET(MODE_ALTSCREEN)) {
+					tclearregion(0, 0, term.col-1, term.row-1);
+					tswapscreen();
+				}
+				if(escseq.arg[0] == 1047)
+					break;
+			case 1048:
 				tcursor(CURSOR_LOAD);
-				tclearregion(0, 0, term.col-1, term.row-1);
 				break;
 			default:
 				goto unknown;
@@ -757,14 +855,22 @@ csihandle(void) {
 				term.mode |= MODE_WRAP;
 				break;
 			case 12: /* att610 -- Start blinking cursor (IGNORED) */
-				break;
+				 /* fallthrough for xterm cvvis = CSI [ ? 12 ; 25 h */
+				if(escseq.narg > 1 && escseq.arg[1] != 25)
+					break;
 			case 25:
 				term.c.state &= ~CURSOR_HIDE;
 				break;
-			case 1048: 
-			case 1049: /* XXX: no alt. screen to erase/save */
+			case 1049: /* = 1047 and 1048 */
+			case 1047:
+				if(IS_SET(MODE_ALTSCREEN))
+					tclearregion(0, 0, term.col-1, term.row-1);
+				else
+					tswapscreen();
+				if(escseq.arg[0] == 1047)
+					break;
+			case 1048:
 				tcursor(CURSOR_SAVE);
-				tclearregion(0, 0, term.col-1, term.row-1);
 				break;
 			default: goto unknown;
 			}
@@ -831,7 +937,8 @@ tputc(char c) {
 				term.esc = 0;
 				csiparse(), csihandle();
 			}
-		} else if(term.esc & ESC_OSC) {
+			/* TODO: handle other OSC */
+		} else if(term.esc & ESC_OSC) { 
 			if(c == ';') {
 				term.titlelen = 0;
 				term.esc = ESC_START | ESC_TITLE;
@@ -869,7 +976,7 @@ tputc(char c) {
 				break;
 			case 'D': /* IND -- Linefeed */
 				if(term.c.y == term.bot)
-					tscrollup(1);
+					tscrollup(term.top, 1);
 				else
 					tmoveto(term.c.x, term.c.y+1);
 				term.esc = 0;
@@ -880,7 +987,7 @@ tputc(char c) {
 				break;
 			case 'M': /* RI -- Reverse index */
 				if(term.c.y == term.top)
-					tscrolldown(1);
+					tscrolldown(term.top, 1);
 				else
 					tmoveto(term.c.x, term.c.y-1);
 				term.esc = 0;
@@ -889,19 +996,19 @@ tputc(char c) {
 				treset();
 				term.esc = 0;
 				break;
-			case '=': /* DECPAM */
+			case '=': /* DECPAM -- Application keypad */
 				term.mode |= MODE_APPKEYPAD;
 				term.esc = 0;
 				break;
-			case '>': /* DECPNM */
+			case '>': /* DECPNM -- Normal keypad */
 				term.mode &= ~MODE_APPKEYPAD;
 				term.esc = 0;
 				break;
-			case '7':
+			case '7': /* DECSC -- Save Cursor */
 				tcursor(CURSOR_SAVE);
 				term.esc = 0;
 				break;
-			case '8':
+			case '8': /* DECRC -- Restore Cursor */
 				tcursor(CURSOR_LOAD);
 				term.esc = 0;
 				break;
@@ -956,26 +1063,46 @@ tresize(int col, int row) {
 	int i;
 	int minrow = MIN(row, term.row);
 	int mincol = MIN(col, term.col);
+	int slide = term.c.y - row + 1;
 
 	if(col < 1 || row < 1)
 		return;
 
-	/* free uneeded rows */
-	for(i = row; i < term.row; i++)
+	/* free unneeded rows */
+	i = 0;
+	if(slide > 0) {
+		/* slide screen to keep cursor where we expect it -
+		 * tscrollup would work here, but we can optimize to
+		 * memmove because we're freeing the earlier lines */
+		for(/* i = 0 */; i < slide; i++) {
+			free(term.line[i]);
+			free(term.alt[i]);
+		}
+		memmove(term.line, term.line + slide, row * sizeof(Line));
+		memmove(term.alt, term.alt + slide, row * sizeof(Line));
+	}
+	for(i += row; i < term.row; i++) {
 		free(term.line[i]);
+		free(term.alt[i]);
+	}
 
 	/* resize to new height */
 	term.line = realloc(term.line, row * sizeof(Line));
+	term.alt  = realloc(term.alt,  row * sizeof(Line));
 
 	/* resize each row to new width, zero-pad if needed */
 	for(i = 0; i < minrow; i++) {
 		term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
+		term.alt[i]  = realloc(term.alt[i],  col * sizeof(Glyph));
 		memset(term.line[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
+		memset(term.alt[i]  + mincol, 0, (col - mincol) * sizeof(Glyph));
 	}
 
 	/* allocate any new rows */
-	for(/* i == minrow */; i < row; i++)
+	for(/* i == minrow */; i < row; i++) {
 		term.line[i] = calloc(col, sizeof(Glyph));
+		term.alt [i] = calloc(col, sizeof(Glyph));
+	}
 	
 	/* update terminal size */
 	term.col = col, term.row = row;
@@ -1068,20 +1195,26 @@ xinit(void) {
 	xloadcols();
 
 	/* windows */
-	xw.h = term.row * xw.ch + 2*BORDER;
-	xw.w = term.col * xw.cw + 2*BORDER;
+	xw.bufh = term.row * xw.ch;
+	xw.bufw = term.col * xw.cw;
+	xw.h = xw.bufh + 2*BORDER;
+	xw.w = xw.bufw + 2*BORDER;
 	xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
 			xw.w, xw.h, 0,
 			dc.col[DefaultBG],
 			dc.col[DefaultBG]);
-	xw.bufw = xw.w - 2*BORDER;
-	xw.bufh = xw.h - 2*BORDER;
 	xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
 	/* gc */
 	dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
+
+	/* event mask */
+	XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask
+		| StructureNotifyMask | FocusChangeMask | PointerMotionMask
+		| ButtonPressMask | ButtonReleaseMask);
+	
 	XMapWindow(xw.dis, xw.win);
 	xhints();
-	XStoreName(xw.dis, xw.win, "st");
+	XStoreName(xw.dis, xw.win, opt_title ? opt_title : "st");
 	XSync(xw.dis, 0);
 }
 
@@ -1100,8 +1233,13 @@ xdraws(char *s, Glyph base, int x, int y, int len) {
 	XSetForeground(xw.dis, dc.gc, xfg);
 	
 	if(base.mode & ATTR_GFX)
-		for(i = 0; i < len; i++)
-			s[i] = gfx[(int)s[i]];
+		for(i = 0; i < len; i++) {
+			char c = gfx[(unsigned int)s[i] % 256];
+			if(c)
+				s[i] = c;
+			else if(s[i] > 0x5f)
+				s[i] -= 0x5f;
+		}
 
 	XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
 	XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
@@ -1129,7 +1267,7 @@ xdrawcursor(void) {
 		xclear(oldx, oldy, oldx, oldy);
 	
 	/* draw the new one */
-	if(!(term.c.state & CURSOR_HIDE)) {
+	if(!(term.c.state & CURSOR_HIDE) && xw.hasfocus) {
 		xdraws(&g.c, g, term.c.x, term.c.y, 1);
 		oldx = term.c.x, oldy = term.c.y;
 	}
@@ -1168,7 +1306,7 @@ draw(int redraw_all) {
 	int i, x, y, ox;
 	Glyph base, new;
 	char buf[DRAW_BUF_SIZ];
-	
+
 	XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
 	XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.bufw, xw.bufh);
 	for(y = 0; y < term.row; y++) {
@@ -1176,8 +1314,10 @@ draw(int redraw_all) {
 		i = ox = 0;
 		for(x = 0; x < term.col; x++) {
 			new = term.line[y][x];
+			if(sel.bx!=-1 && new.c && selected(x, y))
+				new.mode ^= ATTR_REVERSE;
 			if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
-						i >= DRAW_BUF_SIZ)) {
+					i >= DRAW_BUF_SIZ)) {
 				xdraws(buf, base, ox, y, i);
 				i = 0;
 			}
@@ -1216,6 +1356,7 @@ void
 focus(XEvent *ev) {
 	if((xw.hasfocus = ev->type == FocusIn))
 		xseturgency(0);
+	draw(SCREEN_UPDATE);
 }
 
 char*
@@ -1259,7 +1400,7 @@ kpress(XEvent *ev) {
 			break;
 		case XK_Insert:
 			if(shift)
-				draw(1), puts("draw!")/* XXX: paste X clipboard */;
+				selpaste(), draw(1);
 			break;
 		default:
 			fprintf(stderr, "errkey: %d\n", (int)ksym);
@@ -1282,6 +1423,8 @@ resize(XEvent *e) {
 	row = xw.bufh / xw.ch;
 	tresize(col, row);
 	ttyresize(col, row);
+	xw.bufh = MAX(1, xw.bufh);
+	xw.bufw = MAX(1, xw.bufw);
 	XFreePixmap(xw.dis, xw.buf);
 	xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
 	draw(SCREEN_REDRAW);
@@ -1292,12 +1435,8 @@ run(void) {
 	XEvent ev;
 	fd_set rfd;
 	int xfd = XConnectionNumber(xw.dis);
-	long mask = ExposureMask | KeyPressMask | StructureNotifyMask | FocusChangeMask;
 
-	XSelectInput(xw.dis, xw.win, mask);
-	XResizeWindow(xw.dis, xw.win, xw.w, xw.h); /* XXX: fix resize bug in wmii (?) */
-
-	while(1) {
+	for(;;) {
 		FD_ZERO(&rfd);
 		FD_SET(cmdfd, &rfd);
 		FD_SET(xfd, &rfd);
@@ -1320,14 +1459,26 @@ run(void) {
 
 int
 main(int argc, char *argv[]) {
-	if(argc == 2 && !strncmp("-v", argv[1], 3))
-		die("st-" VERSION ", (c) 2010 st engineers\n");
-	else if(argc != 1)
-		die("usage: st [-v]\n");
+	int i;
+	
+	for(i = 1; i < argc; i++) {
+		switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
+		case 't':
+			if(++i < argc) opt_title = argv[i];
+			break;
+		case 'e':
+			if(++i < argc) opt_cmd = argv[i];
+			break;
+		case 'v':
+		default:
+			die(USAGE);
+		}
+	}
 	setlocale(LC_CTYPE, "");
 	tnew(80, 24);
 	ttynew();
 	xinit();
+	selinit();
 	run();
 	return 0;
 }