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commit 60a13f3a625e22e41a053538033a03fa2ce52b5d
parent d227057f9f26276f89be68f85f3660d5f23b8854
Author: Ed van Bruggen <edvb54@gmail.com>
Date:   Wed, 22 Mar 2017 22:48:50 -0700

Patches: Update st scrollback patch

Diffstat:
patches/st-scrollback-20170104-c63a87c.diff | 285+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
patches/st-scrollback.diff | 388-------------------------------------------------------------------------------
2 files changed, 285 insertions(+), 388 deletions(-)

diff --git a/patches/st-scrollback-20170104-c63a87c.diff b/patches/st-scrollback-20170104-c63a87c.diff @@ -0,0 +1,285 @@ +diff --git a/st.c b/st.c +index fbcd9e0..64bc208 100644 +--- a/st.c ++++ b/st.c +@@ -87,6 +88,8 @@ char *argv0; + #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f)) + #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c)) + #define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL) ++#define TLINE(y) ((y) < term.scr ? term.hist[((y) + term.histi - term.scr \ ++ + histsize + 1) % histsize] : term.line[(y) - term.scr]) + + /* constants */ + #define ISO14755CMD "dmenu -w %lu -p codepoint: </dev/null" +@@ -334,6 +340,8 @@ typedef struct { + /* 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 zoom(const Arg *); +@@ -409,8 +417,8 @@ static void tputtab(int); + static void tputc(Rune); + static void treset(void); + static void tresize(int, int); +-static void tscrollup(int, int); +-static void tscrolldown(int, int); ++static void tscrollup(int, int, int); ++static void tscrolldown(int, int, int); + static void tsetattr(int *, int); + static void tsetchar(Rune, Glyph *, int, int); + static void tsetscroll(int, int); +@@ -742,10 +750,10 @@ tlinelen(int y) + { + int i = term.col; + +- if (term.line[y][i - 1].mode & ATTR_WRAP) ++ if (TLINE(y)[i - 1].mode & ATTR_WRAP) + return i; + +- while (i > 0 && term.line[y][i - 1].u == ' ') ++ while (i > 0 && TLINE(y)[i - 1].u == ' ') + --i; + + return i; +@@ -807,7 +815,7 @@ selsnap(int *x, int *y, int direction) + * Snap around if the word wraps around at the end or + * beginning of a line. + */ +- prevgp = &term.line[*y][*x]; ++ prevgp = &TLINE(*y)[*x]; + prevdelim = ISDELIM(prevgp->u); + for (;;) { + newx = *x + direction; +@@ -822,14 +830,14 @@ selsnap(int *x, int *y, int direction) + yt = *y, xt = *x; + else + yt = newy, xt = newx; +- if (!(term.line[yt][xt].mode & ATTR_WRAP)) ++ if (!(TLINE(yt)[xt].mode & ATTR_WRAP)) + break; + } + + if (newx >= tlinelen(newy)) + break; + +- gp = &term.line[newy][newx]; ++ gp = &TLINE(newy)[newx]; + delim = ISDELIM(gp->u); + if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim + || (delim && gp->u != prevgp->u))) +@@ -850,14 +858,14 @@ selsnap(int *x, int *y, int direction) + *x = (direction < 0) ? 0 : term.col - 1; + if (direction < 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) { + for (; *y < term.row-1; *y += direction) { +- if (!(term.line[*y][term.col-1].mode ++ if (!(TLINE(*y)[term.col-1].mode + & ATTR_WRAP)) { + break; + } +@@ -1023,13 +1031,13 @@ getsel(void) + } + + if (sel.type == SEL_RECTANGULAR) { +- gp = &term.line[y][sel.nb.x]; ++ gp = &TLINE(y)[sel.nb.x]; + lastx = sel.ne.x; + } else { +- gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0]; ++ gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0]; + lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1; + } +- last = &term.line[y][MIN(lastx, linelen-1)]; ++ last = &TLINE(y)[MIN(lastx, linelen-1)]; + while (last >= gp && last->u == ' ') + --last; + +@@ -1513,6 +1521,9 @@ ttyread(void) + if (buflen > 0) + memmove(buf, ptr, buflen); + ++ if (term.scr > 0 && term.scr < histsize-1) ++ term.scr++; ++ + return ret; + } + +@@ -1522,6 +1533,9 @@ ttywrite(const char *s, size_t n) + fd_set wfd, rfd; + ssize_t r; + size_t lim = 256; ++ Arg arg = (Arg) { .i = term.scr }; ++ ++ kscrolldown(&arg); + + /* + * Remember that we are using a pty, which might be a modem line. +@@ -1724,13 +1738,53 @@ 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, int copyhist) + { + int i; + Line temp; + + LIMIT(n, 0, term.bot-orig+1); + ++ 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; ++ } ++ + tsetdirt(orig, term.bot-n); + tclearregion(0, term.bot-n+1, term.col-1, term.bot); + +@@ -1744,13 +1798,20 @@ tscrolldown(int orig, int n) + } + + void +-tscrollup(int orig, int n) ++tscrollup(int orig, int n, int 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); + +@@ -1799,7 +1860,7 @@ tnewline(int first_col) + int y = term.c.y; + + if (y == term.bot) { +- tscrollup(term.top, 1); ++ tscrollup(term.top, 1, 1); + } else { + y++; + } +@@ -1964,14 +2025,14 @@ void + tinsertblankline(int n) + { + if (BETWEEN(term.c.y, term.top, term.bot)) +- tscrolldown(term.c.y, n); ++ tscrolldown(term.c.y, n, 0); + } + + void + tdeleteline(int n) + { + if (BETWEEN(term.c.y, term.top, term.bot)) +- tscrollup(term.c.y, n); ++ tscrollup(term.c.y, n, 0); + } + + int32_t +@@ -2405,11 +2466,11 @@ 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], 0); + 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], 0); + break; + case 'L': /* IL -- Insert <n> blank lines */ + DEFAULT(csiescseq.arg[0], 1); +@@ -2945,7 +3006,7 @@ eschandle(uchar ascii) + return 0; + case 'D': /* IND -- Linefeed */ + if (term.c.y == term.bot) { +- tscrollup(term.top, 1); ++ tscrollup(term.top, 1, 1); + } else { + tmoveto(term.c.x, term.c.y+1); + } +@@ -2958,7 +3019,7 @@ eschandle(uchar ascii) + break; + case 'M': /* RI -- Reverse index */ + if (term.c.y == term.top) { +- tscrolldown(term.top, 1); ++ tscrolldown(term.top, 1, 1); + } else { + tmoveto(term.c.x, term.c.y-1); + } +@@ -3145,7 +3206,7 @@ check_control_code: + void + tresize(int col, int row) + { +- int i; ++ int i, j; + int minrow = MIN(row, term.row); + int mincol = MIN(col, term.col); + int *bp; +@@ -3185,6 +3246,14 @@ tresize(int col, int row) + 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; ++ term.hist[i][j].u = ' '; ++ } ++ } ++ + /* resize each row to new width, zero-pad if needed */ + for (i = 0; i < minrow; i++) { + term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph)); diff --git a/patches/st-scrollback.diff b/patches/st-scrollback.diff @@ -1,388 +0,0 @@ -diff --git a/config.def.h b/config.def.h -index fd09d72..96892f1 100644 ---- a/config.def.h -+++ b/config.def.h -@@ -7,6 +7,7 @@ - */ - static char font[] = "Liberation Mono:pixelsize=12:antialias=true:autohint=true"; - static int borderpx = 2; -+#define histsize 2000 - - /* - * What program is execed by st depends of these precedence rules: -@@ -157,6 +158,8 @@ static Shortcut shortcuts[] = { - { MODKEY|ShiftMask, XK_C, clipcopy, {.i = 0} }, - { MODKEY|ShiftMask, XK_V, clippaste, {.i = 0} }, - { MODKEY, XK_Num_Lock, numlock, {.i = 0} }, -+ { ShiftMask, XK_Page_Up, kscrollup, {.i = -1} }, -+ { ShiftMask, XK_Page_Down, kscrolldown, {.i = -1} }, - }; - - /* -diff --git a/st.c b/st.c -index c5d62c1..c58c8c5 100644 ---- a/st.c -+++ b/st.c -@@ -85,6 +85,8 @@ 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]) - - - enum glyph_attribute { -@@ -227,26 +229,6 @@ typedef struct { - int narg; /* nb of args */ - } STREscape; - --/* Internal representation of the screen */ --typedef struct { -- int row; /* nb row */ -- int col; /* nb col */ -- Line *line; /* screen */ -- Line *alt; /* alternate screen */ -- int *dirty; /* dirtyness of lines */ -- XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */ -- TCursor c; /* cursor */ -- int top; /* top scroll limit */ -- int bot; /* bottom scroll limit */ -- int mode; /* terminal mode flags */ -- int esc; /* escape state flags */ -- char trantbl[4]; /* charset table translation */ -- int charset; /* current charset */ -- int icharset; /* selected charset for sequence */ -- int numlock; /* lock numbers in keyboard */ -- int *tabs; --} Term; -- - /* Purely graphic info */ - typedef struct { - Display *dpy; -@@ -326,6 +308,8 @@ typedef struct { - /* 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 *); -@@ -359,6 +343,29 @@ typedef struct { - GC gc; - } DC; - -+/* Internal representation of the screen */ -+typedef struct { -+ int row; /* nb row */ -+ int col; /* nb col */ -+ Line *line; /* screen */ -+ Line *alt; /* alternate screen */ -+ Line hist[histsize]; /* history buffer */ -+ int histi; /* history index */ -+ int scr; /* scroll back */ -+ int *dirty; /* dirtyness of lines */ -+ XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */ -+ TCursor c; /* cursor */ -+ int top; /* top scroll limit */ -+ int bot; /* bottom scroll limit */ -+ int mode; /* terminal mode flags */ -+ int esc; /* escape state flags */ -+ char trantbl[4]; /* charset table translation */ -+ int charset; /* current charset */ -+ int icharset; /* selected charset for sequence */ -+ int numlock; /* lock numbers in keyboard */ -+ int *tabs; -+} Term; -+ - static void die(const char *, ...); - static void draw(void); - static void redraw(void); -@@ -398,8 +405,8 @@ static void tputtab(int); - static void tputc(Rune); - static void treset(void); - static void tresize(int, int); --static void tscrollup(int, int); --static void tscrolldown(int, int); -+static void tscrollup(int, int, int); -+static void tscrolldown(int, int, int); - static void tsetattr(int *, int); - static void tsetchar(Rune, Glyph *, int, int); - static void tsetscroll(int, int); -@@ -730,10 +737,10 @@ tlinelen(int y) - { - int i = term.col; - -- if (term.line[y][i - 1].mode & ATTR_WRAP) -+ if (TLINE(y)[i - 1].mode & ATTR_WRAP) - return i; - -- while (i > 0 && term.line[y][i - 1].u == ' ') -+ while (i > 0 && TLINE(y)[i - 1].u == ' ') - --i; - - return i; -@@ -795,7 +802,7 @@ selsnap(int *x, int *y, int direction) - * Snap around if the word wraps around at the end or - * beginning of a line. - */ -- prevgp = &term.line[*y][*x]; -+ prevgp = &TLINE(*y)[*x]; - prevdelim = ISDELIM(prevgp->u); - for (;;) { - newx = *x + direction; -@@ -810,14 +817,14 @@ selsnap(int *x, int *y, int direction) - yt = *y, xt = *x; - else - yt = newy, xt = newx; -- if (!(term.line[yt][xt].mode & ATTR_WRAP)) -+ if (!(TLINE(yt)[xt].mode & ATTR_WRAP)) - break; - } - - if (newx >= tlinelen(newy)) - break; - -- gp = &term.line[newy][newx]; -+ gp = &TLINE(newy)[newx]; - delim = ISDELIM(gp->u); - if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim - || (delim && gp->u != prevgp->u))) -@@ -838,14 +845,14 @@ selsnap(int *x, int *y, int direction) - *x = (direction < 0) ? 0 : term.col - 1; - if (direction < 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) { - for (; *y < term.row-1; *y += direction) { -- if (!(term.line[*y][term.col-1].mode -+ if (!(TLINE(*y)[term.col-1].mode - & ATTR_WRAP)) { - break; - } -@@ -1011,13 +1018,13 @@ getsel(void) - } - - if (sel.type == SEL_RECTANGULAR) { -- gp = &term.line[y][sel.nb.x]; -+ gp = &TLINE(y)[sel.nb.x]; - lastx = sel.ne.x; - } else { -- gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0]; -+ gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0]; - lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1; - } -- last = &term.line[y][MIN(lastx, linelen-1)]; -+ last = &TLINE(y)[MIN(lastx, linelen-1)]; - while (last >= gp && last->u == ' ') - --last; - -@@ -1490,6 +1497,9 @@ 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++; -+ - return ret; - } - -@@ -1499,6 +1509,9 @@ ttywrite(const char *s, size_t n) - fd_set wfd, rfd; - ssize_t r; - size_t lim = 256; -+ Arg arg = (Arg){ .i = term.scr }; -+ -+ kscrolldown(&arg); - - /* - * Remember that we are using a pty, which might be a modem line. -@@ -1690,13 +1703,53 @@ 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, int copyhist) - { - int i; - Line temp; - - LIMIT(n, 0, term.bot-orig+1); - -+ 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; -+ } -+ - tsetdirt(orig, term.bot-n); - tclearregion(0, term.bot-n+1, term.col-1, term.bot); - -@@ -1710,13 +1763,20 @@ tscrolldown(int orig, int n) - } - - void --tscrollup(int orig, int n) -+tscrollup(int orig, int n, int 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); - -@@ -1765,7 +1825,7 @@ tnewline(int first_col) - int y = term.c.y; - - if (y == term.bot) { -- tscrollup(term.top, 1); -+ tscrollup(term.top, 1, 1); - } else { - y++; - } -@@ -1930,14 +1990,14 @@ void - tinsertblankline(int n) - { - if (BETWEEN(term.c.y, term.top, term.bot)) -- tscrolldown(term.c.y, n); -+ tscrolldown(term.c.y, n, 0); - } - - void - tdeleteline(int n) - { - if (BETWEEN(term.c.y, term.top, term.bot)) -- tscrollup(term.c.y, n); -+ tscrollup(term.c.y, n, 0); - } - - int32_t -@@ -2371,11 +2431,11 @@ 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], 0); - 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], 0); - break; - case 'L': /* IL -- Insert <n> blank lines */ - DEFAULT(csiescseq.arg[0], 1); -@@ -2871,7 +2931,7 @@ eschandle(uchar ascii) - return 0; - case 'D': /* IND -- Linefeed */ - if (term.c.y == term.bot) { -- tscrollup(term.top, 1); -+ tscrollup(term.top, 1, 1); - } else { - tmoveto(term.c.x, term.c.y+1); - } -@@ -2884,7 +2944,7 @@ eschandle(uchar ascii) - break; - case 'M': /* RI -- Reverse index */ - if (term.c.y == term.top) { -- tscrolldown(term.top, 1); -+ tscrolldown(term.top, 1, 1); - } else { - tmoveto(term.c.x, term.c.y-1); - } -@@ -3047,7 +3107,7 @@ tputc(Rune u) - void - tresize(int col, int row) - { -- int i; -+ int i, j; - int minrow = MIN(row, term.row); - int mincol = MIN(col, term.col); - int *bp; -@@ -3087,6 +3147,14 @@ tresize(int col, int row) - 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; -+ term.hist[i][j].u = ' '; -+ } -+ } -+ - /* resize each row to new width, zero-pad if needed */ - for (i = 0; i < minrow; i++) { - term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph)); -@@ -3984,11 +4052,11 @@ drawregion(int x1, int y1, int x2, int y2) - term.dirty[y] = 0; - - specs = term.specbuf; -- numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y); -+ numspecs = xmakeglyphfontspecs(specs, &TLINE(y)[x1], x2 - x1, x1, y); - - i = ox = 0; - for (x = x1; x < x2 && i < numspecs; x++) { -- new = term.line[y][x]; -+ new = TLINE(y)[x]; - if (new.mode == ATTR_WDUMMY) - continue; - if (ena_sel && selected(x, y)) -@@ -4008,7 +4076,8 @@ drawregion(int x1, int y1, int x2, int y2) - if (i > 0) - xdrawglyphfontspecs(specs, base, i, ox, y); - } -- xdrawcursor(); -+ if (term.scr == 0) -+ xdrawcursor(); - } - - void -