config.def.h

@@ -90,10 +90,6 @@ int allowaltscreen = 1;
    setting the clipboard text */
 int allowwindowops = 0;
 
-/* allow programs to set the clipboard via OSC 52. This is what tmux uses
-   for set-clipboard, and what remote programs use to copy over ssh. */
-int allowclipboard = 1;
-
 /*
  * draw latency range in ms - from new content/keypress/etc until drawing.
  * within this range, st draws when content stops arriving (idle). mostly it's

config.h

@@ -90,10 +90,6 @@ int allowaltscreen = 1;
    setting the clipboard text */
 int allowwindowops = 0;
 
-/* allow programs to set the clipboard via OSC 52. This is what tmux uses
-   for set-clipboard, and what remote programs use to copy over ssh. */
-int allowclipboard = 1;
-
 /*
  * draw latency range in ms - from new content/keypress/etc until drawing.
  * within this range, st draws when content stops arriving (idle). mostly it's

kitty.c

@@ -2295,46 +2295,122 @@ kitty_find_virtual(uint32_t imgid, uint32_t plcid)
 /*
  * Blit the part of a virtual placement that corresponds to one screen cell.
  * (px, py) is the cell on screen, (row, col) the cell within the placement.
- *
- * The whole placement is scaled once into the placement's pixmap cache
- * (kitty_prepare), and each cell is then a cheap XRender copy out of it.
  */
 static void
 kitty_blit_cell(KittyPlacement *p, int px, int py, int row, int col)
 {
+	KittyImage *im = p->image;
+	const unsigned char *base;
+	unsigned char *cell;
+	int cw = win.cw, ch = win.ch;
+	int fullw, fullh, sx0, sy0, x, y, i, n;
+	unsigned char *tile;
+	Pixmap pm;
+	XImage ximage;
 	Picture src, dstpic;
 	XRenderPictFormat *fmt;
 	XRenderPictureAttributes pa;
-	int w, h, bx, by, cw = win.cw, ch = win.ch;
+	int bx, by;
-	int sx, sy, cellw, cellh;
 
-	if (!p->image || row >= p->rows || col >= p->cols)
+	if (!im || row >= p->rows || col >= p->cols)
-		return;
-	if (!kitty_prepare(p, &w, &h))
 		return;
 
-	sx = col * cw;
+	fullw = p->cols * cw;
-	sy = row * ch;
+	fullh = p->rows * ch;
-	cellw = KMIN(cw, w - sx);
+	if (fullw <= 0 || fullh <= 0)
-	cellh = KMIN(ch, h - sy);
-	if (cellw <= 0 || cellh <= 0)
 		return;
 
+	base = kitty_frame_pixels(im, im->current_frame);
+	if (!base)
+		return;
+	base += ((size_t)p->sy * im->width + p->sx) * 4;
+
+	/* scale just this cell out of the source rect */
+	sx0 = col * cw;
+	sy0 = row * ch;
+	if (!(cell = malloc((size_t)cw * ch * 4)))
+		return;
+	for (y = 0; y < ch; y++) {
+		double fy = ((double)(sy0 + y) + 0.5) * p->sh / fullh - 0.5;
+		int y0 = (int)(fy < 0 ? 0 : fy);
+		int y1 = KMIN(y0 + 1, p->sh - 1);
+		int wy = (int)((fy - y0) * 256);
+		if (wy < 0) wy = 0;
+		if (wy > 256) wy = 256;
+		for (x = 0; x < cw; x++) {
+			double fx = ((double)(sx0 + x) + 0.5) * p->sw / fullw - 0.5;
+			int x0 = (int)(fx < 0 ? 0 : fx);
+			int x1 = KMIN(x0 + 1, p->sw - 1);
+			int wx = (int)((fx - x0) * 256);
+			const unsigned char *q00, *q01, *q10, *q11;
+			unsigned char *o = cell + ((size_t)y * cw + x) * 4;
+			int c;
+			if (wx < 0) wx = 0;
+			if (wx > 256) wx = 256;
+			q00 = base + (size_t)y0 * im->width * 4 + x0 * 4;
+			q01 = base + (size_t)y0 * im->width * 4 + x1 * 4;
+			q10 = base + (size_t)y1 * im->width * 4 + x0 * 4;
+			q11 = base + (size_t)y1 * im->width * 4 + x1 * 4;
+			for (c = 0; c < 4; c++) {
+				int t = q00[c] * (256 - wx) + q01[c] * wx;
+				int b = q10[c] * (256 - wx) + q11[c] * wx;
+				o[c] = (unsigned char)((t * (256 - wy) + b * wy) >> 16);
+			}
+		}
+	}
+
+	tile = cell;
+	n = cw * ch;
+	for (i = 0; i < n; i++) {
+		unsigned char r = tile[4*i+0], g = tile[4*i+1];
+		unsigned char b = tile[4*i+2], a = tile[4*i+3];
+		tile[4*i+0] = (unsigned char)(b * a / 255);
+		tile[4*i+1] = (unsigned char)(g * a / 255);
+		tile[4*i+2] = (unsigned char)(r * a / 255);
+		tile[4*i+3] = a;
+	}
+
+	pm = XCreatePixmap(xw.dpy, xw.win, cw, ch, 32);
+	if (!pm) {
+		free(cell);
+		return;
+	}
+	memset(&ximage, 0, sizeof ximage);
+	ximage.format = ZPixmap;
+	ximage.data = (char *)tile;
+	ximage.width = cw;
+	ximage.height = ch;
+	ximage.byte_order = LSBFirst;
+	ximage.bitmap_bit_order = MSBFirst;
+	ximage.bits_per_pixel = 32;
+	ximage.bytes_per_line = cw * 4;
+	ximage.bitmap_unit = 32;
+	ximage.bitmap_pad = 32;
+	ximage.depth = 32;
+	XInitImage(&ximage);
+	{
+		GC gc = XCreateGC(xw.dpy, pm, 0, NULL);
+		XPutImage(xw.dpy, pm, gc, &ximage, 0, 0, 0, 0, cw, ch);
+		XFreeGC(xw.dpy, gc);
+	}
+	free(cell);
+
 	kitty_border(&bx, &by);
 
 	memset(&pa, 0, sizeof pa);
 	fmt = XRenderFindStandardFormat(xw.dpy, PictStandardARGB32);
-	if (!fmt)
-		return;
-	src = XRenderCreatePicture(xw.dpy, (Drawable)p->pixmap, fmt, 0, &pa);
-	fmt = XRenderFindVisualFormat(xw.dpy, xw.vis);
 	if (fmt) {
-		dstpic = XRenderCreatePicture(xw.dpy, xw.buf, fmt, 0, &pa);
+		src = XRenderCreatePicture(xw.dpy, pm, fmt, 0, &pa);
-		XRenderComposite(xw.dpy, PictOpOver, src, None, dstpic, sx, sy, 0, 0,
+		fmt = XRenderFindVisualFormat(xw.dpy, xw.vis);
-		                 bx + px * cw, by + py * ch, cellw, cellh);
+		if (fmt) {
-		XRenderFreePicture(xw.dpy, dstpic);
+			dstpic = XRenderCreatePicture(xw.dpy, xw.buf, fmt, 0, &pa);
+			XRenderComposite(xw.dpy, PictOpOver, src, None, dstpic, 0, 0, 0, 0,
+			                 bx + px * cw, by + py * ch, cw, ch);
+			XRenderFreePicture(xw.dpy, dstpic);
+		}
+		XRenderFreePicture(xw.dpy, src);
 	}
-	XRenderFreePicture(xw.dpy, src);
+	XFreePixmap(xw.dpy, pm);
 }
 
 /* scan the visible screen for placeholder glyphs and draw their images */

patch/openurlonclick.c

@@ -61,30 +61,6 @@ clearurl(void)
 	url_y2 = -1;
 }
 
-#if OSC7_OSC8_PATCH
-/* an explicit OSC 8 hyperlink takes precedence over text detection */
-static char *
-detecthyperlink(int col, int row, int draw)
-{
-	int x1, y1, x2, y2;
-	uint32_t id = hyperlink_at(col, row, &x1, &y1, &x2, &y2);
-	const char *url;
-
-	if (!id || !(url = hyperlink_get(id)))
-		return NULL;
-	if (draw) {
-		url_x1 = x1;
-		url_x2 = x2;
-		url_y1 = y1;
-		url_y2 = y2;
-		url_maxcol = x2;
-		url_draw = 1;
-		term.dirty[y1] = 1;
-	}
-	return (char *)url;
-}
-#endif // OSC7_OSC8_PATCH
-
 #if REFLOW_PATCH
 char *
 detecturl(int col, int row, int draw)
@@ -96,19 +72,11 @@ detecturl(int col, int row, int draw)
 	int row_start = row, col_start = col;
 	int minrow = tisaltscr() ? 0 : term.scr - term.histf;
 	int maxrow = tisaltscr() ? term.row - 1 : term.scr + term.row - 1;
-	#if OSC7_OSC8_PATCH
-	char *link;
-	#endif // OSC7_OSC8_PATCH
 
 	/* clear previously underlined url */
 	if (draw)
 		clearurl();
 
-	#if OSC7_OSC8_PATCH
-	if ((link = detecthyperlink(col, row, draw)))
-		return link;
-	#endif // OSC7_OSC8_PATCH
-
 	url_maxcol = 0;
 	line = TLINE(row);
 
@@ -175,9 +143,6 @@ char *
 detecturl(int col, int row, int draw)
 {
 	static char url[2048];
-	#if OSC7_OSC8_PATCH
-	char *link;
-	#endif // OSC7_OSC8_PATCH
 	int x1, y1, x2, y2, wrapped;
 	int row_start = row;
 	int col_start = col;
@@ -197,11 +162,6 @@ detecturl(int col, int row, int draw)
 	if (draw)
 		clearurl();
 
-	#if OSC7_OSC8_PATCH
-	if ((link = detecthyperlink(col, row, draw)))
-		return link;
-	#endif // OSC7_OSC8_PATCH
-
 	if (!isvalidurlchar(TLINEURL(row)[col].u))
 		return NULL;
 

patch/reflow.c

@@ -68,9 +68,6 @@ tclearglyph(Glyph *gp, int usecurattr)
 	#if KITTY_GRAPHICS_PATCH
 	gp->kitty = 0;
 	#endif // KITTY_GRAPHICS_PATCH
-	#if OSC7_OSC8_PATCH
-	gp->link = 0;
-	#endif // OSC7_OSC8_PATCH
 }
 
 #if SIXEL_PATCH

patches.def.h

@@ -357,14 +357,6 @@
  */
 #define KITTY_GRAPHICS_PATCH 0
 
-/* This patch adds support for OSC 7 (current working directory reporting) and
- * OSC 8 (hyperlinks). Shells and programs can mark ranges of text as links to
- * arbitrary URLs; with the openurlonclick patch these become clickable and
- * take precedence over URL text detection. The working directory reported by
- * the shell is stored in term.cwd for use by e.g. new window shortcuts.
- */
-#define OSC7_OSC8_PATCH 0
-
 /* This patch adds SIXEL graphics support for st.
  * Note that patch/sixel.c/sixel_hls.c come from mintty, licensed under GPL.
  * Known issues:

patches.h

@@ -357,14 +357,6 @@
  */
 #define KITTY_GRAPHICS_PATCH 1
 
-/* This patch adds support for OSC 7 (current working directory reporting) and
- * OSC 8 (hyperlinks). Shells and programs can mark ranges of text as links to
- * arbitrary URLs; with the openurlonclick patch these become clickable and
- * take precedence over URL text detection. The working directory reported by
- * the shell is stored in term.cwd for use by e.g. new window shortcuts.
- */
-#define OSC7_OSC8_PATCH 1
-
 /* This patch adds SIXEL graphics support for st.
  * Note that patch/sixel.c/sixel_hls.c come from mintty, licensed under GPL.
  * Known issues:

st.c

@@ -117,7 +117,6 @@ enum escape_state {
 	#if SIXEL_PATCH
 	ESC_DCS        =128,
 	#endif // SIXEL_PATCH
-	ESC_DCS_IGNORE =256, /* discarding an unknown DCS until ST */
 };
 
 typedef struct {
@@ -144,7 +143,6 @@ typedef struct {
 	char buf[ESC_BUF_SIZ]; /* raw string */
 	size_t len;            /* raw string length */
 	char priv;
-	char prefix;           /* '>', '<' or '=' private prefix */
 	int arg[ESC_ARG_SIZ];
 	int narg;              /* nb of args */
 	char mode[2];
@@ -228,7 +226,6 @@ static void tsetdirt(int, int);
 static void tsetscroll(int, int);
 static void tswapscreen(void);
 static void tsetmode(int, int, const int *, int);
-static int tmodestatus(int, int);
 static int twrite(const char *, int, int);
 static void tcontrolcode(uchar );
 static void tdectest(char );
@@ -273,115 +270,6 @@ static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF
 
 #include "patch/st_include.h"
 
-#if OSC7_OSC8_PATCH
-/*
- * OSC 8 hyperlinks. Each distinct (id, url) pair gets a numeric handle that
- * is stored in Glyph.link. Links with an explicit id= parameter are shared
- * between all cells using that id, so a link split across lines still counts
- * as one link.
- */
-typedef struct {
-	char *id;    /* the id= parameter, or NULL */
-	char *url;
-} Hyperlink;
-
-static Hyperlink *hyperlinks;   /* index 0 is unused (0 == no link) */
-static uint32_t nhyperlinks, hyperlinkcap;
-static uint32_t curlink;        /* link applied to newly printed cells */
-
-static uint32_t
-hyperlink_add(const char *id, const char *url)
-{
-	uint32_t i;
-	Hyperlink *h;
-
-	if (!url || !*url)
-		return 0;
-
-	/* reuse an existing entry for the same id and url */
-	for (i = 1; i < nhyperlinks; i++) {
-		h = &hyperlinks[i];
-		if (!strcmp(h->url, url) &&
-		    ((!id && !h->id) || (id && h->id && !strcmp(id, h->id))))
-			return i;
-	}
-
-	if (nhyperlinks + 1 > hyperlinkcap) {
-		uint32_t ncap = hyperlinkcap ? hyperlinkcap * 2 : 64;
-		hyperlinks = xrealloc(hyperlinks, ncap * sizeof *hyperlinks);
-		if (!nhyperlinks) {
-			hyperlinks[0].id = hyperlinks[0].url = NULL;
-			nhyperlinks = 1;
-		}
-		hyperlinkcap = ncap;
-	}
-	h = &hyperlinks[nhyperlinks];
-	h->id = (id && *id) ? xstrdup(id) : NULL;
-	h->url = xstrdup(url);
-	return nhyperlinks++;
-}
-
-const char *
-hyperlink_get(uint32_t id)
-{
-	if (id == 0 || id >= nhyperlinks)
-		return NULL;
-	return hyperlinks[id].url;
-}
-
-/* handle "OSC 8 ; params ; url": params is a ':'-separated key=value list */
-static void
-hyperlink_osc(const char *params, const char *url)
-{
-	char idbuf[256], *id = NULL;
-	const char *p = params;
-
-	while (p && *p) {
-		const char *end = strchr(p, ':');
-		size_t n = end ? (size_t)(end - p) : strlen(p);
-		if (n > 3 && !strncmp(p, "id=", 3)) {
-			n = MIN(n - 3, sizeof idbuf - 1);
-			memcpy(idbuf, p + 3, n);
-			idbuf[n] = '\0';
-			id = idbuf;
-		}
-		p = end ? end + 1 : NULL;
-	}
-	curlink = hyperlink_add(id, url);
-}
-
-/*
- * Find the extent of the link at (col, row) on the visible screen. Returns
- * the link handle, or 0 if the cell is not part of a link. The returned
- * rectangle covers the contiguous run on this row; use hyperlink_get() for
- * the url.
- */
-uint32_t
-hyperlink_at(int col, int row, int *x1, int *y1, int *x2, int *y2)
-{
-	Line line;
-	uint32_t id;
-	int x;
-
-	if (row < 0 || row >= term.row || col < 0 || col >= term.col)
-		return 0;
-	#if REFLOW_PATCH || SCROLLBACK_PATCH
-	line = TLINE(row);
-	#else
-	line = term.line[row];
-	#endif
-	if (!(id = line[col].link))
-		return 0;
-	for (x = col; x > 0 && line[x-1].link == id; x--);
-	*x1 = x;
-	for (x = col; x < term.col-1 && line[x+1].link == id; x++);
-	*x2 = x;
-	*y1 = *y2 = row;
-	return id;
-}
-#endif // OSC7_OSC8_PATCH
-
-
 ssize_t
 xwrite(int fd, const char *s, size_t len)
 {
@@ -909,16 +797,6 @@ execsh(char *cmd, char **args)
 	unsetenv("COLUMNS");
 	unsetenv("LINES");
 	unsetenv("TERMCAP");
-	/*
-	 * A new st window is never inside a multiplexer, even when st itself
-	 * was launched from one. Programs such as kitten icat use these to
-	 * decide whether to wrap escape codes for tmux, which breaks them.
-	 */
-	unsetenv("TMUX");
-	unsetenv("TMUX_PANE");
-	unsetenv("STY");
-	unsetenv("ZELLIJ");
-	unsetenv("ZELLIJ_SESSION_NAME");
 	setenv("LOGNAME", pw->pw_name, 1);
 	setenv("USER", pw->pw_name, 1);
 	setenv("SHELL", sh, 1);
@@ -1326,9 +1204,6 @@ treset(void)
 	term.top = 0;
 	term.bot = term.row - 1;
 	term.mode = MODE_WRAP|MODE_UTF8;
-	#if OSC7_OSC8_PATCH
-	curlink = 0;
-	#endif // OSC7_OSC8_PATCH
 	memset(term.trantbl, CS_USA, sizeof(term.trantbl));
 	term.charset = 0;
 	#if REFLOW_PATCH
@@ -1633,13 +1508,9 @@ csiparse(void)
 	int sep = ';'; /* colon or semi-colon, but not both */
 
 	csiescseq.narg = 0;
-	csiescseq.prefix = '\0';
 	if (*p == '?') {
 		csiescseq.priv = 1;
 		p++;
-	} else if (*p == '>' || *p == '<' || *p == '=') {
-		csiescseq.prefix = *p;
-		p++;
 	}
 
 	csiescseq.buf[csiescseq.len] = '\0';
@@ -1739,10 +1610,6 @@ tsetchar(Rune u, const Glyph *attr, int x, int y)
 		term.line[y][x].mode |= ATTR_BOXDRAW;
 	#endif // BOXDRAW_PATCH
 
-	#if OSC7_OSC8_PATCH
-	term.line[y][x].link = curlink;
-	#endif // OSC7_OSC8_PATCH
-
 	#if KITTY_GRAPHICS_PATCH
 	term.line[y][x].kitty = 0;
 	if (u == KITTY_PLACEHOLDER)
@@ -2084,50 +1951,6 @@ tsetscroll(int t, int b)
 	term.bot = b;
 }
 
-/* DECRQM: report the state of a mode */
-static int
-tmodestatus(int priv, int mode)
-{
-	int wm = win.mode;
-
-	if (priv) {
-		switch (mode) {
-		case 1:    return (wm & MODE_APPCURSOR) ? 1 : 2;
-		case 6:    return (term.c.state & CURSOR_ORIGIN) ? 1 : 2;
-		case 7:    return IS_SET(MODE_WRAP) ? 1 : 2;
-		case 12:   return 0;
-		case 25:   return (wm & MODE_HIDE) ? 2 : 1;
-		case 47:
-		case 1047:
-		case 1049: return IS_SET(MODE_ALTSCREEN) ? 1 : 2;
-		case 9:    return (wm & MODE_MOUSEX10) ? 1 : 2;
-		case 1000: return (wm & MODE_MOUSEBTN) ? 1 : 2;
-		case 1002: return (wm & MODE_MOUSEMOTION) ? 1 : 2;
-		case 1003: return (wm & MODE_MOUSEMANY) ? 1 : 2;
-		case 1004: return (wm & MODE_FOCUS) ? 1 : 2;
-		case 1006: return (wm & MODE_MOUSESGR) ? 1 : 2;
-		case 1034: return (wm & MODE_8BIT) ? 1 : 2;
-		case 2004: return (wm & MODE_BRCKTPASTE) ? 1 : 2;
-		#if SYNC_PATCH
-		case 2026: return su ? 1 : 2;
-		#endif // SYNC_PATCH
-		case 2031: return 4; /* theme change notifications: not supported */
-		#if SIXEL_PATCH
-		case 80:   return IS_SET(MODE_SIXEL_SDM) ? 1 : 2;
-		case 8452: return IS_SET(MODE_SIXEL_CUR_RT) ? 1 : 2;
-		#endif // SIXEL_PATCH
-		}
-		return 0;
-	}
-	switch (mode) {
-	case 2:  return 4; /* KAM, always reset */
-	case 4:  return IS_SET(MODE_INSERT) ? 1 : 2;
-	case 12: return IS_SET(MODE_ECHO) ? 2 : 1;
-	case 20: return IS_SET(MODE_CRLF) ? 1 : 2;
-	}
-	return 0;
-}
-
 void
 tsetmode(int priv, int set, const int *args, int narg)
 {
@@ -2186,8 +2009,6 @@ tsetmode(int priv, int set, const int *args, int narg)
 			case 1004: /* 1004: send focus events to tty */
 				xsetmode(set, MODE_FOCUS);
 				break;
-			case 7727: /* 7727: extended keys (tmux/mintty), not supported */
-				break;
 			case 1006: /* 1006: extended reporting mode */
 				xsetmode(set, MODE_MOUSESGR);
 				break;
@@ -2342,22 +2163,6 @@ csihandle(void)
 		}
 		break;
 	case 'c': /* DA -- Device Attributes */
-		if (csiescseq.prefix == '>') {
-			/*
-			 * DA2 -- Secondary Device Attributes: CSI > Pp ; Pv ; Pc c
-			 * Pp = 0 (VT100 class), Pv = firmware version, Pc = 0.
-			 * tmux and others use this to fingerprint the terminal.
-			 */
-			if (csiescseq.arg[0] == 0)
-				ttywrite("\033[>0;95;0c", 10, 0);
-			break;
-		}
-		if (csiescseq.prefix == '=') {
-			/* DA3 -- Tertiary Device Attributes: unit id, all zeroes */
-			if (csiescseq.arg[0] == 0)
-				ttywrite("\033P!|00000000\033\\", 14, 0);
-			break;
-		}
 		if (csiescseq.arg[0] == 0)
 			ttywrite(vtiden, strlen(vtiden), 0);
 		break;
@@ -2664,18 +2469,6 @@ csihandle(void)
 			               term.c.y+1, term.c.x+1);
 			ttywrite(buffer, len, 0);
 			break;
-		case 996: /* colour scheme (dark/light) report: CSI ? 997 ; Ps n */
-			if (csiescseq.priv) {
-				unsigned char r, g, b;
-				int dark = 1;
-				if (!xgetcolor(defaultbg, &r, &g, &b))
-					dark = (299*r + 587*g + 114*b) / 1000 < 128;
-				len = snprintf(buffer, sizeof(buffer), "\033[?997;%dn",
-				               dark ? 1 : 2);
-				ttywrite(buffer, len, 0);
-				break;
-			}
-			goto unknown;
 		default:
 			goto unknown;
 		}
@@ -2742,47 +2535,9 @@ csihandle(void)
 		}
 		break;
 	#endif // CSI_22_23_PATCH | SIXEL_PATCH
-	case 'u':
+	case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
-		if (csiescseq.priv) {
-			/* CSI ? u -- kitty keyboard protocol: query flags. We do not
-			 * implement the protocol, so answer with no flags set. */
-			ttywrite("\033[?0u", 5, 0);
-			break;
-		}
-		if (csiescseq.prefix == '>' || csiescseq.prefix == '<' ||
-		    csiescseq.prefix == '=') {
-			/* CSI > flags u (push), CSI < flags u (pop), CSI = flags ; mode u
-			 * (set): kitty keyboard protocol, silently ignored. */
-			break;
-		}
-		/* DECRC -- Restore cursor position (ANSI.SYS) */
 		tcursor(CURSOR_LOAD);
 		break;
-	case 'q':
-		if (csiescseq.prefix == '>') {
-			/* XTVERSION -- CSI > Ps q: report terminal name and version */
-			n = snprintf(buffer, sizeof(buffer), "\033P>|st(%s)\033\\", VERSION);
-			ttywrite(buffer, n, 0);
-			break;
-		}
-		goto unknown;
-	case '$':
-		switch (csiescseq.mode[1]) {
-		case 'p': /* DECRQM -- request mode */
-			/*
-			 * Reply: CSI ? Pd ; Ps $ y   (ANSI: CSI Pd ; Ps $ y)
-			 * Ps: 0 not recognized, 1 set, 2 reset,
-			 *     3 permanently set, 4 permanently reset
-			 */
-			n = snprintf(buffer, sizeof(buffer), "\033[%s%d;%d$y",
-			             csiescseq.priv ? "?" : "", csiescseq.arg[0],
-			             tmodestatus(csiescseq.priv, csiescseq.arg[0]));
-			ttywrite(buffer, n, 0);
-			break;
-		default:
-			goto unknown;
-		}
-		break;
 	case ' ':
 		switch (csiescseq.mode[1]) {
 		case 'q': /* DECSCUSR -- Set Cursor Style */
@@ -2913,7 +2668,7 @@ strhandle(void)
 				#endif // CSI_22_23_PATCH
 			return;
 		case 52:
-			if (narg > 2 && (allowwindowops || allowclipboard)) {
+			if (narg > 2 && allowwindowops) {
 				dec = base64dec(strescseq.args[2]);
 				if (dec) {
 					xsetsel(dec);
@@ -2923,29 +2678,8 @@ strhandle(void)
 				}
 			}
 			return;
-		#if OSC7_OSC8_PATCH
-		case 7: /* current working directory: file://host/path */
-			if (narg > 1) {
-				p = strescseq.args[1];
-				if (!strncmp(p, "file://", 7)) {
-					/* skip the host part */
-					p += 7;
-					p = strchr(p, '/');
-				}
-				free(term.cwd);
-				term.cwd = (p && *p == '/') ? xstrdup(p) : NULL;
-			}
-			return;
-		case 8: /* hyperlink: OSC 8 ; params ; url */
-			if (narg > 2 && strescseq.args[2][0])
-				hyperlink_osc(strescseq.args[1], strescseq.args[2]);
-			else
-				curlink = 0;
-			return;
-		#else
 		case 8: /* Clear Hyperlinks */
 			return;
-		#endif // OSC7_OSC8_PATCH
 		case 10:
 		case 11:
 		case 12:
@@ -3411,13 +3145,9 @@ dcshandle(void)
 	switch (csiescseq.mode[0]) {
 	default:
 	unknown:
-		/*
+		fprintf(stderr, "erresc: unknown csi ");
-		 * An unknown DCS, e.g. the "DCS tmux;" passthrough wrapper or
+		csidump();
-		 * XTGETTCAP. Its body must not be interpreted, so discard every
+		/* die(""); */
-		 * byte until the terminating ST. Note the body may contain ESC ESC
-		 * (tmux doubles them), which must not end the string.
-		 */
-		term.esc |= ESC_DCS_IGNORE;
 		break;
 	#if SYNC_PATCH
 	case '=':
@@ -3587,23 +3317,6 @@ tputc(Rune u)
 	 * receives a ESC, a SUB, a ST or any other C1 control
 	 * character.
 	 */
-	if (term.esc & ESC_DCS_IGNORE) {
-		static int sawesc;
-		if (sawesc) {
-			sawesc = 0;
-			if (u == '\\') {
-				term.esc = 0;
-				return;
-			}
-			/* ESC ESC or ESC <other>: still inside the payload */
-			if (u != 033)
-				return;
-		}
-		if (u == 033)
-			sawesc = 1;
-		return;
-	}
-
 	if (term.esc & ESC_STR) {
 		if (u == '\a' || u == 030 || u == 032 || u == 033 ||
 		   ISCONTROLC1(u)) {
@@ -3770,84 +3483,6 @@ check_control_code:
 	}
 }
 
-/*
- * Print a run of plain printable ASCII characters using the current cursor
- * attributes, writing whole cells directly into the current line. Returns the
- * number of bytes consumed, or 0 when the fast path does not apply and the
- * caller must fall back to tputc().
- */
-static int
-tputcrun(const char *buf, int buflen)
-{
-	Glyph attr = term.c.attr;
-	Glyph *gp;
-	int i, run, avail;
-
-	/* Only handle the simple, overwhelmingly common case. */
-	if (term.esc || (term.mode & (MODE_PRINT|MODE_INSERT|MODE_SIXEL)) ||
-	    term.trantbl[term.charset] == CS_GRAPHIC0 ||
-	    (term.c.state & CURSOR_WRAPNEXT) ||
-	    sel.mode != SEL_IDLE || sel.ob.x != -1)
-		return 0;
-
-	avail = term.col - term.c.x;
-	if (avail <= 0)
-		return 0;
-
-	/* Count leading printable ASCII bytes, bounded by the line width. */
-	for (run = 0; run < buflen && run < avail; run++) {
-		unsigned char c = (unsigned char)buf[run];
-		if (c < 0x20 || c >= 0x7f)
-			break;
-	}
-	if (run < 2)
-		return 0;  /* not worth it; keep tputc's semantics */
-
-	attr.mode |= ATTR_SET;
-	attr.mode &= ~(ATTR_WIDE|ATTR_WDUMMY|ATTR_BOXDRAW|ATTR_KITTYPH);
-	#if OSC7_OSC8_PATCH
-	attr.link = curlink;
-	#endif // OSC7_OSC8_PATCH
-	#if KITTY_GRAPHICS_PATCH
-	attr.kitty = 0;
-	#endif // KITTY_GRAPHICS_PATCH
-
-	gp = &term.line[term.c.y][term.c.x];
-
-	/* A wide glyph may straddle the start of the run. */
-	if (gp->mode & ATTR_WDUMMY) {
-		if (term.c.x == 0)
-			return 0;
-		gp[-1].u = ' ';
-		gp[-1].mode &= ~ATTR_WIDE;
-	}
-	/* ...or the end of it. */
-	if (run < avail && (gp[run].mode & ATTR_WDUMMY)) {
-		gp[run].u = ' ';
-		gp[run].mode &= ~ATTR_WDUMMY;
-	}
-
-	for (i = 0; i < run; i++) {
-		gp[i] = attr;
-		gp[i].u = (unsigned char)buf[i];
-	}
-
-	term.dirty[term.c.y] = 1;
-	term.lastc = (unsigned char)buf[run-1];
-
-	if (term.c.x + run < term.col) {
-		term.c.x += run;
-	} else {
-		term.c.x = term.col - 1;
-		#if REFLOW_PATCH
-		term.wrapcwidth[IS_SET(MODE_ALTSCREEN)] = 1;
-		#endif // REFLOW_PATCH
-		term.c.state |= CURSOR_WRAPNEXT;
-	}
-
-	return run;
-}
-
 int
 twrite(const char *buf, int buflen, int show_ctrl)
 {
@@ -3861,14 +3496,6 @@ twrite(const char *buf, int buflen, int show_ctrl)
 	#endif // SYNC_PATCH
 
 	for (n = 0; n < buflen; n += charsize) {
-		/*
-		 * Fast path: a run of plain printable ASCII printed with the
-		 * current attributes onto the current line. This skips the
-		 * per-character tputc/tsetchar dispatch, which dominates the
-		 * profile while streaming large amounts of text.
-		 */
-		if (!show_ctrl && (charsize = tputcrun(buf + n, buflen - n)) > 0)
-			continue;
 		#if SIXEL_PATCH
 		if (IS_SET(MODE_SIXEL) && sixel_st.state != PS_ESC) {
 			charsize = sixel_parser_parse(&sixel_st, (const unsigned char*)buf + n, buflen - n);

st.h

@@ -150,9 +150,6 @@ typedef struct {
 	#if KITTY_GRAPHICS_PATCH
 	uint32_t kitty;   /* kitty Unicode placeholder row/column/msb */
 	#endif // KITTY_GRAPHICS_PATCH
-	#if OSC7_OSC8_PATCH
-	uint32_t link;    /* OSC 8 hyperlink id, 0 == none */
-	#endif // OSC7_OSC8_PATCH
 } Glyph;
 
 typedef Glyph *Line;
@@ -211,9 +208,6 @@ typedef struct {
 	ImageList *images_alt; /* sixel images for alternate screen */
 	#endif // SIXEL_PATCH
 	Rune lastc;   /* last printed char outside of sequence, 0 if control */
-	#if OSC7_OSC8_PATCH
-	char *cwd;    /* working directory reported via OSC 7, or NULL */
-	#endif // OSC7_OSC8_PATCH
 } Term;
 
 typedef union {
@@ -382,11 +376,6 @@ char *getsel(void);
 
 size_t utf8encode(Rune, char *);
 
-#if OSC7_OSC8_PATCH
-const char *hyperlink_get(uint32_t id);
-uint32_t hyperlink_at(int col, int row, int *x1, int *y1, int *x2, int *y2);
-#endif // OSC7_OSC8_PATCH
-
 void *xmalloc(size_t);
 void *xrealloc(void *, size_t);
 char *xstrdup(const char *);
@@ -415,7 +404,6 @@ extern wchar_t *kbds_ldelim;
 #endif // KEYBOARDSELECT_PATCH
 extern int allowaltscreen;
 extern int allowwindowops;
-extern int allowclipboard;
 extern char *termname;
 extern unsigned int tabspaces;
 extern unsigned int defaultfg;

st.info

@@ -199,20 +199,11 @@ st-mono| simpleterm monocolor,
 #	rep=%p1%c\E[%p2%{1}%-%db,
 # tmux extensions, see TERMINFO EXTENSIONS in tmux(1)
 	Tc,
-	RGB,
 	Ms=\E]52;%p1%s;%p2%s\007,
 	Se=\E[2 q,
 	Ss=\E[%p1%d q,
 # sync patch / SYNC_PATCH
 	Sync=\EP=%p1%ds\E\\,
-# undercurl patch / UNDERCURL_PATCH: styled and coloured underlines
-	Smulx=\E[4:%p1%dm,
-	Setulc=\E[58:2::%p1%{65536}%/%d:%p1%{256}%/%{255}%&%d:%p1%{255}%&%dm,
-# focus events (mode 1004), used by tmux focus-events
-	kxIN=\E[I,
-	kxOUT=\E[O,
-# hyperlinks / OSC7_OSC8_PATCH
-	Hls=\E]8;id=%p1%s;%p2%s\E\\,
 
 st| simpleterm,
 	use=st-mono,