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commit c2ec27a458098f4d73d6c1e01eed52c65d506e97
parent 57eea169eeab8ecd83d4c1a23d5f9bb3394d445e
Author: Tarmo Heiskanen <turskii@gmail.com>
Date:   Sun, 31 Mar 2019 14:42:02 +0300

[st][patch] scrollback: Update base patch

Diffstat:
Mst.suckless.org/patches/scrollback/index.md | 3+--
Dst.suckless.org/patches/scrollback/st-scrollback-20181224-096b125.diff | 335-------------------------------------------------------------------------------
Dst.suckless.org/patches/scrollback/st-scrollback-20190122-3be4cf1.diff | 335-------------------------------------------------------------------------------
Ast.suckless.org/patches/scrollback/st-scrollback-20190331-21367a0.diff | 335+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 336 insertions(+), 672 deletions(-)

diff --git a/st.suckless.org/patches/scrollback/index.md b/st.suckless.org/patches/scrollback/index.md @@ -10,8 +10,7 @@ Download * [st-scrollback-0.7.diff](st-scrollback-0.7.diff) * [st-scrollback-0.8.diff](st-scrollback-0.8.diff) * [st-scrollback-0.8.1.diff](st-scrollback-0.8.1.diff) -* [st-scrollback-20181224-096b125.diff](st-scrollback-20181224-096b125.diff) -* [st-scrollback-20190122-3be4cf1.diff](st-scrollback-20190122-3be4cf1.diff) +* [st-scrollback-20190331-21367a0.diff](st-scrollback-20190331-21367a0.diff) Apply the following patch on top of the previous to allow scrolling using `Shift+MouseWheel`. diff --git a/st.suckless.org/patches/scrollback/st-scrollback-20181224-096b125.diff b/st.suckless.org/patches/scrollback/st-scrollback-20181224-096b125.diff @@ -1,335 +0,0 @@ -diff --git a/config.def.h b/config.def.h -index 823e79f..f6278a3 100644 ---- a/config.def.h -+++ b/config.def.h -@@ -177,6 +177,8 @@ static Shortcut shortcuts[] = { - { TERMMOD, XK_V, clippaste, {.i = 0} }, - { TERMMOD, XK_Y, selpaste, {.i = 0} }, - { TERMMOD, 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 b8e6077..218ae73 100644 ---- a/st.c -+++ b/st.c -@@ -35,6 +35,7 @@ - #define ESC_ARG_SIZ 16 - #define STR_BUF_SIZ ESC_BUF_SIZ - #define STR_ARG_SIZ ESC_ARG_SIZ -+#define HISTSIZE 2000 - - /* macros */ - #define IS_SET(flag) ((term.mode & (flag)) != 0) -@@ -42,6 +43,9 @@ - #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]) - - enum term_mode { - MODE_WRAP = 1 << 0, -@@ -117,6 +121,9 @@ typedef struct { - 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 */ - TCursor c; /* cursor */ - int ocx; /* old cursor col */ -@@ -184,8 +191,8 @@ static void tnewline(int); - static void tputtab(int); - static void tputc(Rune); - static void treset(void); --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 tsetdirt(int, int); -@@ -427,10 +434,10 @@ 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; -@@ -539,7 +546,7 @@ 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; -@@ -554,14 +561,14 @@ 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))) -@@ -582,14 +589,14 @@ 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; - } -@@ -620,13 +627,13 @@ 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; - -@@ -849,6 +856,9 @@ void - ttywrite(const char *s, size_t n, int may_echo) - { - const char *next; -+ Arg arg = (Arg) { .i = term.scr }; -+ -+ kscrolldown(&arg); - - if (may_echo && IS_SET(MODE_ECHO)) - twrite(s, n, 1); -@@ -1060,13 +1070,53 @@ 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); - -@@ -1080,13 +1130,23 @@ 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; -+ } -+ -+ if (term.scr > 0 && term.scr < HISTSIZE) -+ term.scr = MIN(term.scr + n, HISTSIZE-1); -+ - tclearregion(0, orig, term.col-1, orig+n-1); - tsetdirt(orig+n, term.bot); - -@@ -1135,7 +1195,7 @@ tnewline(int first_col) - int y = term.c.y; - - if (y == term.bot) { -- tscrollup(term.top, 1); -+ tscrollup(term.top, 1, 1); - } else { - y++; - } -@@ -1300,14 +1360,14 @@ 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 -@@ -1737,11 +1797,11 @@ 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); -@@ -2243,7 +2303,7 @@ 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); - } -@@ -2256,7 +2316,7 @@ 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); - } -@@ -2475,7 +2535,7 @@ twrite(const char *buf, int buflen, int show_ctrl) - 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; -@@ -2512,6 +2572,14 @@ 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)); -@@ -2569,7 +2637,7 @@ drawregion(int x1, int y1, int x2, int y2) - continue; - - term.dirty[y] = 0; -- xdrawline(term.line[y], x1, y, x2); -+ xdrawline(TLINE(y), x1, y, x2); - } - } - -@@ -2590,8 +2658,9 @@ draw(void) - cx--; - - drawregion(0, 0, term.col, term.row); -- xdrawcursor(cx, term.c.y, term.line[term.c.y][cx], -- term.ocx, term.ocy, term.line[term.ocy][term.ocx]); -+ if (term.scr == 0) -+ xdrawcursor(cx, term.c.y, term.line[term.c.y][cx], -+ term.ocx, term.ocy, term.line[term.ocy][term.ocx]); - term.ocx = cx, term.ocy = term.c.y; - xfinishdraw(); - } -diff --git a/st.h b/st.h -index 38c61c4..17a79e0 100644 ---- a/st.h -+++ b/st.h -@@ -80,6 +80,8 @@ void die(const char *, ...); - void redraw(void); - void draw(void); - -+void kscrolldown(const Arg *); -+void kscrollup(const Arg *); - void printscreen(const Arg *); - void printsel(const Arg *); - void sendbreak(const Arg *); diff --git a/st.suckless.org/patches/scrollback/st-scrollback-20190122-3be4cf1.diff b/st.suckless.org/patches/scrollback/st-scrollback-20190122-3be4cf1.diff @@ -1,335 +0,0 @@ -diff --git a/config.def.h b/config.def.h -index 823e79f..f6278a3 100644 ---- a/config.def.h -+++ b/config.def.h -@@ -178,6 +178,8 @@ static Shortcut shortcuts[] = { - { TERMMOD, XK_Y, selpaste, {.i = 0} }, - { ShiftMask, XK_Insert, selpaste, {.i = 0} }, - { TERMMOD, 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 b8e6077..218ae73 100644 ---- a/st.c -+++ b/st.c -@@ -35,6 +35,7 @@ - #define ESC_ARG_SIZ 16 - #define STR_BUF_SIZ ESC_BUF_SIZ - #define STR_ARG_SIZ ESC_ARG_SIZ -+#define HISTSIZE 2000 - - /* macros */ - #define IS_SET(flag) ((term.mode & (flag)) != 0) -@@ -42,6 +43,9 @@ - #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]) - - enum term_mode { - MODE_WRAP = 1 << 0, -@@ -117,6 +121,9 @@ typedef struct { - 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 */ - TCursor c; /* cursor */ - int ocx; /* old cursor col */ -@@ -184,8 +191,8 @@ static void tnewline(int); - static void tputtab(int); - static void tputc(Rune); - static void treset(void); --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 tsetdirt(int, int); -@@ -427,10 +434,10 @@ 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; -@@ -539,7 +546,7 @@ 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; -@@ -554,14 +561,14 @@ 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))) -@@ -582,14 +589,14 @@ 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; - } -@@ -620,13 +627,13 @@ 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; - -@@ -849,6 +856,9 @@ void - ttywrite(const char *s, size_t n, int may_echo) - { - const char *next; -+ Arg arg = (Arg) { .i = term.scr }; -+ -+ kscrolldown(&arg); - - if (may_echo && IS_SET(MODE_ECHO)) - twrite(s, n, 1); -@@ -1060,13 +1070,53 @@ 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); - -@@ -1080,13 +1130,23 @@ 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; -+ } -+ -+ if (term.scr > 0 && term.scr < HISTSIZE) -+ term.scr = MIN(term.scr + n, HISTSIZE-1); -+ - tclearregion(0, orig, term.col-1, orig+n-1); - tsetdirt(orig+n, term.bot); - -@@ -1135,7 +1195,7 @@ tnewline(int first_col) - int y = term.c.y; - - if (y == term.bot) { -- tscrollup(term.top, 1); -+ tscrollup(term.top, 1, 1); - } else { - y++; - } -@@ -1300,14 +1360,14 @@ 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 -@@ -1737,11 +1797,11 @@ 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); -@@ -2243,7 +2303,7 @@ 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); - } -@@ -2256,7 +2316,7 @@ 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); - } -@@ -2475,7 +2535,7 @@ twrite(const char *buf, int buflen, int show_ctrl) - 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; -@@ -2512,6 +2572,14 @@ 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)); -@@ -2569,7 +2637,7 @@ drawregion(int x1, int y1, int x2, int y2) - continue; - - term.dirty[y] = 0; -- xdrawline(term.line[y], x1, y, x2); -+ xdrawline(TLINE(y), x1, y, x2); - } - } - -@@ -2590,8 +2658,9 @@ draw(void) - cx--; - - drawregion(0, 0, term.col, term.row); -- xdrawcursor(cx, term.c.y, term.line[term.c.y][cx], -- term.ocx, term.ocy, term.line[term.ocy][term.ocx]); -+ if (term.scr == 0) -+ xdrawcursor(cx, term.c.y, term.line[term.c.y][cx], -+ term.ocx, term.ocy, term.line[term.ocy][term.ocx]); - term.ocx = cx, term.ocy = term.c.y; - xfinishdraw(); - } -diff --git a/st.h b/st.h -index 38c61c4..17a79e0 100644 ---- a/st.h -+++ b/st.h -@@ -80,6 +80,8 @@ void die(const char *, ...); - void redraw(void); - void draw(void); - -+void kscrolldown(const Arg *); -+void kscrollup(const Arg *); - void printscreen(const Arg *); - void printsel(const Arg *); - void sendbreak(const Arg *); diff --git a/st.suckless.org/patches/scrollback/st-scrollback-20190331-21367a0.diff b/st.suckless.org/patches/scrollback/st-scrollback-20190331-21367a0.diff @@ -0,0 +1,335 @@ +diff --git a/config.def.h b/config.def.h +index 482901e..5352f43 100644 +--- a/config.def.h ++++ b/config.def.h +@@ -178,6 +178,8 @@ static Shortcut shortcuts[] = { + { TERMMOD, XK_Y, selpaste, {.i = 0} }, + { ShiftMask, XK_Insert, selpaste, {.i = 0} }, + { TERMMOD, 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 8e6ccb5..2599333 100644 +--- a/st.c ++++ b/st.c +@@ -35,6 +35,7 @@ + #define ESC_ARG_SIZ 16 + #define STR_BUF_SIZ ESC_BUF_SIZ + #define STR_ARG_SIZ ESC_ARG_SIZ ++#define HISTSIZE 2000 + + /* macros */ + #define IS_SET(flag) ((term.mode & (flag)) != 0) +@@ -42,6 +43,9 @@ + #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f)) + #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c)) + #define ISDELIM(u) (u && wcschr(worddelimiters, u)) ++#define TLINE(y) ((y) < term.scr ? term.hist[((y) + term.histi - \ ++ term.scr + HISTSIZE + 1) % HISTSIZE] : \ ++ term.line[(y) - term.scr]) + + enum term_mode { + MODE_WRAP = 1 << 0, +@@ -117,6 +121,9 @@ typedef struct { + 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 */ + TCursor c; /* cursor */ + int ocx; /* old cursor col */ +@@ -184,8 +191,8 @@ static void tnewline(int); + static void tputtab(int); + static void tputc(Rune); + static void treset(void); +-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 tsetdirt(int, int); +@@ -409,10 +416,10 @@ 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; +@@ -521,7 +528,7 @@ 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; +@@ -536,14 +543,14 @@ 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))) +@@ -564,14 +571,14 @@ 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; + } +@@ -602,13 +609,13 @@ 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; + +@@ -831,6 +838,9 @@ void + ttywrite(const char *s, size_t n, int may_echo) + { + const char *next; ++ Arg arg = (Arg) { .i = term.scr }; ++ ++ kscrolldown(&arg); + + if (may_echo && IS_SET(MODE_ECHO)) + twrite(s, n, 1); +@@ -1042,13 +1052,53 @@ 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); + +@@ -1062,13 +1112,23 @@ 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; ++ } ++ ++ if (term.scr > 0 && term.scr < HISTSIZE) ++ term.scr = MIN(term.scr + n, HISTSIZE-1); ++ + tclearregion(0, orig, term.col-1, orig+n-1); + tsetdirt(orig+n, term.bot); + +@@ -1117,7 +1177,7 @@ tnewline(int first_col) + int y = term.c.y; + + if (y == term.bot) { +- tscrollup(term.top, 1); ++ tscrollup(term.top, 1, 1); + } else { + y++; + } +@@ -1282,14 +1342,14 @@ 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 +@@ -1720,11 +1780,11 @@ 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); +@@ -2227,7 +2287,7 @@ 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); + } +@@ -2240,7 +2300,7 @@ 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); + } +@@ -2458,7 +2518,7 @@ twrite(const char *buf, int buflen, int show_ctrl) + 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; +@@ -2495,6 +2555,14 @@ 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)); +@@ -2552,7 +2620,7 @@ drawregion(int x1, int y1, int x2, int y2) + continue; + + term.dirty[y] = 0; +- xdrawline(term.line[y], x1, y, x2); ++ xdrawline(TLINE(y), x1, y, x2); + } + } + +@@ -2573,8 +2641,9 @@ draw(void) + cx--; + + drawregion(0, 0, term.col, term.row); +- xdrawcursor(cx, term.c.y, term.line[term.c.y][cx], +- term.ocx, term.ocy, term.line[term.ocy][term.ocx]); ++ if (term.scr == 0) ++ xdrawcursor(cx, term.c.y, term.line[term.c.y][cx], ++ term.ocx, term.ocy, term.line[term.ocy][term.ocx]); + term.ocx = cx, term.ocy = term.c.y; + xfinishdraw(); + xximspot(term.ocx, term.ocy); +diff --git a/st.h b/st.h +index 4da3051..f11685d 100644 +--- a/st.h ++++ b/st.h +@@ -80,6 +80,8 @@ void die(const char *, ...); + void redraw(void); + void draw(void); + ++void kscrolldown(const Arg *); ++void kscrollup(const Arg *); + void printscreen(const Arg *); + void printsel(const Arg *); + void sendbreak(const Arg *);