fix: agree st-autocomplete with st-scrollback-ringbuffer

(apply st-scrollback-ringbuffer-0.9.2.diff)

from the patch header:

commit 0663bdf11a409961da5b1120741a69814da8ce65
Author: Timo Röhling <timo@gaussglocke.de>
Date:   Tue Nov 23 19:45:33 2021 +0100

    Terminal scrollback with ring buffer

    This patch adds a ring buffer for scrollback to the terminal.  The
    advantage of using a ring buffer is that the common case, scrolling with
    no static screen content, can be achieved very efficiently by
    incrementing and decrementing the starting line (modulo buffer size).

    The scrollback buffer is limited to HISTSIZE lines in order to bound
    memory usage. As the lines are allocated on demand, it is possible to
    implement unlimited scrollback with few changes.  If the terminal is
    reset, the scroll back buffer is reset, too.

Makefile

@@ -15,7 +15,7 @@ config.h:
 .c.o:
 	$(CC) $(STCFLAGS) -c $<
 
-st.o: config.h st.h win.h normalMode.h normalMode.c utils.h
+st.o: config.h st.h win.h
 x.o: arg.h config.h st.h win.h
 
 $(OBJ): config.h config.mk
@@ -38,6 +38,8 @@ install: st
 	mkdir -p $(DESTDIR)$(PREFIX)/bin
 	cp -f st $(DESTDIR)$(PREFIX)/bin
 	chmod 755 $(DESTDIR)$(PREFIX)/bin/st
+	cp -f st-autocomplete $(DESTDIR)$(PREFIX)/bin
+	chmod 755 $(DESTDIR)$(PREFIX)/bin/st-autocomplete
 	mkdir -p $(DESTDIR)$(MANPREFIX)/man1
 	sed "s/VERSION/$(VERSION)/g" < st.1 > $(DESTDIR)$(MANPREFIX)/man1/st.1
 	chmod 644 $(DESTDIR)$(MANPREFIX)/man1/st.1
@@ -46,6 +48,7 @@ install: st
 
 uninstall:
 	rm -f $(DESTDIR)$(PREFIX)/bin/st
+	rm -f $(DESTDIR)$(PREFIX)/bin/st-autocomplete
 	rm -f $(DESTDIR)$(MANPREFIX)/man1/st.1
 
 .PHONY: all clean dist install uninstall

autocomplete.h

@@ -0,0 +1,16 @@
+# ifndef __ST_AUTOCOMPLETE_H
+# define __ST_AUTOCOMPLETE_H
+
+enum {
+	ACMPL_DEACTIVATE,
+	ACMPL_WORD,
+	ACMPL_WWORD,
+	ACMPL_FUZZY_WORD,
+	ACMPL_FUZZY_WWORD,
+	ACMPL_FUZZY,
+	ACMPL_SUFFIX,
+	ACMPL_SURROUND,
+	ACMPL_UNDO,
+};
+
+# endif // __ST_AUTOCOMPLETE_H

config.def.h

@@ -5,51 +5,9 @@
  *
  * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
  */
-static char *fonts[] = {
+static char *font = "FiraCode Nerd Font:size=10";
-	"FiraCode Nerd Font:size=10",
-	"Monaspace Neon:size=10",
-	"Monaspace Argon:size=10",
-	"Monaspace Xenon:size=10",
-	"Monaspace Radon:size=10",
-	"Monaspace Krypton:size=10",
-};
-static size_t currentfont = 0;
 static int borderpx = 2;
 
-
-static char *externaleditcmd[] = { "/bin/sh", "-c",
-	"tmpfile=$(mktemp /tmp/st-edit.XXXXXX)\n"
-	"trap  'rm \"$tmpfile\"' 0 1 15\n"
-	"cat > \"$tmpfile\"\n"
-	"st -e vis \"$tmpfile\"\n",
-	NULL};
-
-int lightmode = 0;
-
-#define COL_GRAY1 "'#222222'"
-#define COL_GRAY2 "'#444444'"
-#define COL_GRAY3 "'#bbbbbb'"
-#define COL_GRAY4 "'#eeeeee'"
-#define COL_CYAN  "'#005577'"
-#define DMENU_DARK "-l 10 -fn 'FiraCode Nerd Font:size=10' -nb " COL_GRAY1 " -nf " COL_GRAY3 " -sb " COL_CYAN " -sf " COL_GRAY4
-#define DMENU_LIGHT "-l 10 -fn 'FiraCode Nerd Font:size=10' -nb " COL_GRAY3 " -nf " COL_GRAY1 " -sb " COL_CYAN " -sf " COL_GRAY4
-
-static char *externalcopydarkcmd[] = { "/bin/sh", "-c",
-	"sed 's/[ \t][ \t]*/\\n/g' | tac | awk 'BEGIN{x[\"\"]++} !x[$0]++' | dmenu " DMENU_DARK " -w $WINDOWID -p Copy | tr -d '\\n' | vis-clipboard --copy",
-	NULL};
-
-static char *externalpastedarkcmd[] = { "/bin/sh", "-c",
-	"sed 's/[ \t][ \t]*/\\n/g' | tac | awk 'BEGIN{x[\"\"]++} !x[$0]++' | dmenu " DMENU_DARK " -w $WINDOWID -p Paste | tr -d '\\n'",
-	NULL};
-
-static char *externalcopylightcmd[] = { "/bin/sh", "-c",
-	"sed 's/[ \t][ \t]*/\\n/g' | tac | awk 'BEGIN{x[\"\"]++} !x[$0]++' | dmenu " DMENU_LIGHT " -w $WINDOWID -p Copy | tr -d '\\n' | vis-clipboard --copy",
-	NULL};
-
-static char *externalpastelightcmd[] = { "/bin/sh", "-c",
-	"sed 's/[ \t][ \t]*/\\n/g' | tac | awk 'BEGIN{x[\"\"]++} !x[$0]++' | dmenu " DMENU_LIGHT " -w $WINDOWID -p Paste | tr -d '\\n'",
-	NULL};
-
 /*
  * What program is execed by st depends of these precedence rules:
  * 1: program passed with -e
@@ -135,61 +93,87 @@ char *termname = "st-256color";
  */
 unsigned int tabspaces = 8;
 
-/* Terminal colors (16 first used in escape sequence) */
+typedef struct {
-static const char *colorname[] = {
+	const char* const colors[258]; /* terminal colors */
-	/* 8 normal colors */
+	unsigned int fg;               /* foreground */
-	"black",
+	unsigned int bg;               /* background */
-	"red3",
+	unsigned int cs;               /* cursor */
-	"green3",
+	unsigned int rcs;              /* reverse cursor */
-	"yellow3",
+} ColorScheme;
-	"blue2",
+/*
-	"magenta3",
+ * Terminal colors (16 first used in escape sequence,
-	"cyan3",
+ * 2 last for custom cursor color),
-	"gray90",
+ * foreground, background, cursor, reverse cursor
+ */
+static const ColorScheme schemes[] = {
+	// st (dark)
+	{{"black", "red3", "green3", "yellow3",
+	  "blue2", "magenta3", "cyan3", "gray90",
+	  "gray50", "red", "green", "yellow",
+	  "#5c5cff", "magenta", "cyan", "white",
+	  [256]="#cccccc", "#555555"}, 7, 0, 256, 257},
 
-	/* 8 bright colors */
+	// Alacritty (dark)
-	"gray50",
+	{{"#1d1f21", "#cc6666", "#b5bd68", "#f0c674",
-	"red",
+	  "#81a2be", "#b294bb", "#8abeb7", "#c5c8c6",
-	"green",
+	  "#666666", "#d54e53", "#b9ca4a", "#e7c547",
-	"yellow",
+	  "#7aa6da", "#c397d8", "#70c0b1", "#eaeaea",
-	"#5c5cff",
+	  [256]="#cccccc", "#555555"}, 7, 0, 256, 257},
-	"magenta",
-	"cyan",
-	"white",
 
-	[255] = 0,
+	// One Half dark
+	{{"#282c34", "#e06c75", "#98c379", "#e5c07b",
+	  "#61afef", "#c678dd", "#56b6c2", "#dcdfe4",
+	  "#282c34", "#e06c75", "#98c379", "#e5c07b",
+	  "#61afef", "#c678dd", "#56b6c2", "#dcdfe4",
+	  [256]="#cccccc", "#555555"}, 7, 0, 256, 257},
 
-	/* more colors can be added after 255 to use with DefaultXX */
+	// One Half light
-	"#cccccc",
+	{{"#fafafa", "#e45649", "#50a14f", "#c18401",
-	"#555555",
+      "#0184bc", "#a626a4", "#0997b3", "#383a42",
-	"gray90", /* default foreground colour */
+	  "#fafafa", "#e45649", "#50a14f", "#c18401",
-	"black", /* default background colour */
+	  "#0184bc", "#a626a4", "#0997b3", "#383a42",
+	  [256]="#cccccc", "#555555"}, 7, 0, 256, 257},
+
+	// Lupan dark
+	{{"#1f212e", "#862d2d", "#3a783a", "#707010",
+	  "#345eb2", "#cc66cc", "#3a7878", "#a1a3aa",
+	  "#4d4d4d", "#c27070", "#40bf40", "#acac53",
+	  "#6b8ac7", "#8f248f", "#509595", "#dbdff0",
+	  [256]="#bf8040", "#555555"}, 7, 0, 256, 257},
+
+	// Lupan light
+	{{"#dae4f1", "#862d2d", "#3a783a", "#707010",
+	  "#345eb2", "#cc66cc", "#3a7878", "#a1a3aa",
+	  "#73778c", "#c27070", "#40bf40", "#acac53",
+	  "#6b8ac7", "#8f248f", "#509595", "#1f212e",
+	  [256]="#bf8040", "#555555"}, 15, 0, 256, 257},
+
+	// Gruvbox dark
+	{{"#282828", "#cc241d", "#98971a", "#d79921",
+	  "#458588", "#b16286", "#689d6a", "#a89984",
+	  "#928374", "#fb4934", "#b8bb26", "#fabd2f",
+	  "#83a598", "#d3869b", "#8ec07c", "#ebdbb2",
+	  [256]="#ebdbb2", "#555555"}, 15, 0, 256, 257},
+
+	// Gruvbox light
+	{{"#fbf1c7", "#cc241d", "#98971a", "#d79921",
+	  "#458588", "#b16286", "#689d6a", "#7c6f64",
+	  "#928374", "#9d0006", "#79740e", "#b57614",
+	  "#076678", "#8f3f71", "#427b58", "#3c3836",
+	  [256]="#3c3836", "#555555"}, 15, 0, 256, 257},
 };
 
+static const char * const * colorname;
+int colorscheme = 0;
 
 /*
  * Default colors (colorname index)
  * foreground, background, cursor, reverse cursor
  */
-unsigned int defaultfg = 258;
+unsigned int defaultfg;
-unsigned int defaultbg = 259;
+unsigned int defaultbg;
-unsigned int defaultcs = 256;
+unsigned int defaultcs;
-static unsigned int defaultrcs = 257;
+static unsigned int defaultrcs;
-unsigned int const currentBg = 179, currentFg = 0, buffSize = 2048;
-/// Enable double / triple click yanking / selection of word / line.
-int const mouseYank = 1, mouseSelect = 0;
-/// [Vim Browse] Colors for search results currently on screen.
-unsigned int const highlightBg = 160, highlightFg = 15;
-char const wDelS[] = "!\"#$%&'()*+,-./:;<=>?@[\\]^`{|}~", wDelL[] = " \t";
-char *nmKeys [] = {              ///< Shortcusts executed in normal mode
-  "R/Building\nN", "r/Building\n", "X/juli@machine\nN", "x/juli@machine\n",
-  "Q?[Leaving vim, starting execution]\n","F/: error:\nN", "f/: error:\n", "DQf"
-};
-unsigned int const amountNmKeys = sizeof(nmKeys) / sizeof(*nmKeys);
-/// Style of the {command, search} string shown in the right corner (y,v,V,/)
-Glyph styleSearch = {' ', ATTR_ITALIC | ATTR_BOLD_FAINT, 7, 16};
-Glyph style[] = {{' ',ATTR_ITALIC|ATTR_FAINT,15,16}, {' ',ATTR_ITALIC,232,11},
-                 {' ', ATTR_ITALIC, 232, 4}, {' ', ATTR_ITALIC, 232, 12}};
 
 /*
  * Default shape of cursor
@@ -227,6 +211,8 @@ static unsigned int defaultattr = 11;
  */
 static uint forcemousemod = ShiftMask;
 
+#include "autocomplete.h"
+
 /*
  * Internal mouse shortcuts.
  * Beware that overloading Button1 will disable the selection.
@@ -244,6 +230,8 @@ static MouseShortcut mshortcuts[] = {
 #define MODKEY Mod1Mask
 #define TERMMOD (ControlMask|ShiftMask)
 
+#define ACMPL_MOD ControlMask|Mod1Mask
+
 static Shortcut shortcuts[] = {
 	/* mask                 keysym          function        argument */
 	{ XK_ANY_MOD,           XK_Break,       sendbreak,      {.i =  0} },
@@ -256,13 +244,28 @@ static Shortcut shortcuts[] = {
 	{ TERMMOD,              XK_C,           clipcopy,       {.i =  0} },
 	{ TERMMOD,              XK_V,           clippaste,      {.i =  0} },
 	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
-	{ TERMMOD,              XK_E,           externalpipe,   { .v = externaleditcmd } },
-	{ TERMMOD,              XK_K,           externalpipecopy, { 0 } },
-	{ TERMMOD,              XK_I,           externalpipepaste, { 0 } },
 	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
 	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
-	{ MODKEY,               XK_c,           normalMode,     {.i =  0} },
+	{ MODKEY|ControlMask,   XK_1,           selectscheme,   {.i =  0} },
-	{ TERMMOD,              XK_S,           cyclefonts,     {}        },
+	{ MODKEY|ControlMask,   XK_2,           selectscheme,   {.i =  1} },
+	{ MODKEY|ControlMask,   XK_3,           selectscheme,   {.i =  2} },
+	{ MODKEY|ControlMask,   XK_4,           selectscheme,   {.i =  3} },
+	{ MODKEY|ControlMask,   XK_5,           selectscheme,   {.i =  4} },
+	{ MODKEY|ControlMask,   XK_6,           selectscheme,   {.i =  5} },
+	{ MODKEY|ControlMask,   XK_7,           selectscheme,   {.i =  6} },
+	{ MODKEY|ControlMask,   XK_8,           selectscheme,   {.i =  7} },
+	{ MODKEY|ControlMask,   XK_9,           nextscheme,     {.i = -1} },
+	{ MODKEY|ControlMask,   XK_0,           nextscheme,     {.i = +1} },
+	{ ShiftMask,            XK_Page_Up,     kscrollup,      {.i = -1} },
+	{ ShiftMask,            XK_Page_Down,   kscrolldown,    {.i = -1} },
+	{ ACMPL_MOD,            XK_slash,       autocomplete,   { .i = ACMPL_WORD        } },
+	{ ACMPL_MOD,            XK_period,      autocomplete,   { .i = ACMPL_FUZZY_WORD  } },
+	{ ACMPL_MOD,            XK_comma,       autocomplete,   { .i = ACMPL_FUZZY       } },
+	{ ACMPL_MOD,            XK_apostrophe,  autocomplete,   { .i = ACMPL_SUFFIX      } },
+	{ ACMPL_MOD,            XK_semicolon,   autocomplete,   { .i = ACMPL_SURROUND    } },
+	{ ACMPL_MOD,            XK_bracketright,autocomplete,   { .i = ACMPL_WWORD       } },
+	{ ACMPL_MOD,            XK_bracketleft, autocomplete,   { .i = ACMPL_FUZZY_WWORD } },
+	{ ACMPL_MOD,            XK_equal,       autocomplete,   { .i = ACMPL_UNDO        } },
 };
 
 /*
@@ -534,14 +537,3 @@ static char ascii_printable[] =
 	" !\"#$%&'()*+,-./0123456789:;<=>?"
 	"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
 	"`abcdefghijklmnopqrstuvwxyz{|}~";
-
-/*
- * Open urls starting with urlprefixes, contatining urlchars
- * by passing as ARG1 to urlhandler.
- */
-char* urlhandler = "xdg-open";
-char urlchars[] =
-	"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
-	"abcdefghijklmnopqrstuvwxyz"
-	"0123456789-._~:/?#@!$&'*+,;=%";
-char* urlprefixes[] = {"http://", "https://", NULL};

normalMode.c

@@ -1,284 +0,0 @@
-#include <X11/keysym.h>
-#include <X11/XKBlib.h>
-
-#include "normalMode.h"
-#include "utils.h"
-
-extern Glyph const styleSearch, style[];
-extern char const wDelS[], wDelL[], *nmKeys[];
-extern unsigned int bg[], fg, currentBg, currentFg, highlightBg, highlightFg, amountNmKeys;
-
-typedef struct { int p[3]; } Pos;
-
-typedef enum {visual='v', visualLine='V', yank = 'y'} Op;
-typedef enum {infix_none=0, infix_i='i', infix_a='a'} Infix;
-typedef enum {fw='/', bw='?'} Search;
-struct NormalModeState {
-	struct OperationState { Op op; Infix infix; } cmd;
-	struct MotionState { uint32_t c; int active; Pos searchPos; Search search; } m;
-} defaultNormalMode, state;
-
-DynamicArray searchStr=UTF8_ARRAY, cCmd=UTF8_ARRAY, lCmd=UTF8_ARRAY;
-Glyph styleCmd;
-char posBuffer[10], braces[6][3] = { {"()"}, {"<>"}, {"{}"}, {"[]"}, {"\"\""}, {"''"}};
-int exited=1, overlay=1;
-static inline Rune cChar() { return term.line[term.c.y][term.c.x].u; }
-static inline int pos(int p, int h) {return IS_SET(MODE_ALTSCREEN)?p:rangeY(p+h*histOff-insertOff);}
-static inline int contains(Rune l, char const * values, size_t const memSize) {
-	for (uint32_t i = 0; i < memSize; ++i) if (l == values[i]) return 1;
-	return 0;
-}
-static inline void decodeTo(char const *cs, size_t len, DynamicArray *arr) {
-	char *var = expand(arr);
-	if (!var) empty(arr); else utf8decode(cs, (Rune*)(var), len);
-}
-static inline void applyPos(Pos p) {
-	term.c.x = p.p[0], term.c.y = p.p[1];
-	if (!IS_SET(MODE_ALTSCREEN) && histOp) term.line = &buf[histOff = p.p[2]];
-}
-/// Find string in history buffer, and provide string-match-lookup for highlighting matches
-static int highlighted(int x, int y) {
-	int const s=term.row*term.col, i=y*term.col+x, sz=size(&searchStr);
-	return sz && i<s && mark[i]!=sz && i+mark[i]<s && !mark[i+mark[i]];
-}
-static void markSearchMatches(int all) {
-	int sz = size(&searchStr), ox = 0, oy = 0, oi=0;
-	for (int y=0; sz && all && y<term.row; ++y)
-		for (int x=0; x<term.col; ++x) term.dirty[y] |= highlighted(x, y);
-	for (int y = 0, wi=0, owi=0, i=0; sz && y < term.row; ++y)
-		for (int x=0; x<term.col; ++x, wi%=sz, ++i, owi=wi)
-			if (all || term.dirty[y]) {
-				mark[i]=sz-(wi=(getU32(&searchStr,wi,1)==term.line[y][x].u?wi+1:0));
-				if (wi==1) ox=x, oy=y, oi=i; else if (!wi && owi) x=ox, y=oy, i=oi;
-			}
-	for (int y=0; sz &&all &&y<term.row; ++y)
-		for (int x=0; x<term.col; ++x) term.dirty[y] |= highlighted(x, y);
-}
-static int findString(int s, int all) {
-	Pos p = (Pos) {.p={term.c.x, term.c.y, IS_SET(MODE_ALTSCREEN) ? 0 : histOff}};
-	historyMove(s, 0, 0);
-	uint32_t strSz=size(&searchStr), maxIter=rows()*term.col+strSz, wIdx=0;
-	for (uint32_t i=0, wi = 0; wIdx<strSz && ++i<=maxIter; historyMove(s, 0, 0), wi=wIdx) {
-		wIdx = (getU32(&searchStr, wIdx, s>0)==cChar())?wIdx+1:0;
-		if (wi && !wIdx) historyMove(-(int)(s*wi), 0, 0);
-	}
-	if (wIdx == strSz && wIdx) historyMove(-(int)(s*strSz), 0, 0);
-	else applyPos(p);
-	markSearchMatches(all);
-	return wIdx == strSz;
-}
-/// Execute series of normal-mode commands from char array / decoded from dynamic array
-ExitState pressKeys(char const* s, size_t e) {
-	ExitState x=success;
-	for (size_t i=0; i<e && (x=(!s[i] ? x : kPressHist(&s[i], 1, 0, NULL))); ++i);
-	return x;
-}
-static ExitState executeCommand(uint32_t *cs, size_t z) {
-	ExitState x=success;
-	char dc [32];
-	for (size_t i=0; i<z && (x=kPressHist(dc, utf8encode(cs[i],dc),0,NULL));++i);
-	return x;
-}
-/// Get character for overlay, if the overlay (st) has something to show, else normal char.
-static void getChar(DynamicArray *st, Glyph *glyphChange, int y, int xEnd, int width, int x) {
-	if (x < xEnd - min(min(width,xEnd), size(st))) *glyphChange = term.line[y][x];
-	else if (x<xEnd) glyphChange->u = *((Rune*)(st->content + (size(st)+x-xEnd)*st->elSize));
-}
-/// Expand "infix" expression: for instance (w =>)       l     b     |   | v     e    |   | y
-static ExitState expandExpression(char l) { //    ({ =>)       l  ?  {  \n | l | v  /  } \n | h | y
-	int a=state.cmd.infix==infix_a, yank=state.cmd.op=='y', lc=tolower(l), found=1;
-	state.cmd.infix = infix_none;
-	if(!yank && state.cmd.op!=visual && state.cmd.op!=visualLine) return failed;
-	char mot[11] = {'l', 0, 'b', 0, 0, 'v', 0, 'e', 0, 0, (char)(yank ? 'y' : 0)};
-	if (lc == 'w') mot[2] = (char) ('b' - lc + l), mot[7] = (char) ((a ? 'w' : 'e') - lc + l), mot[9]=(char)(a?'h':0);
-	else {
-		mot[1]='?', mot[3]=mot[8]='\n', mot[6]='/', mot[4]=(char)(a?0:'l'), mot[9]=(char)(a?0:'h');
-		for (int i=found=0; !found && i < 6; ++i)
-			if ((found=contains(l,braces[i],2))) mot[2]=braces[i][0], mot[7]=braces[i][1];
-	}
-	if (!found) return failed;
-	assign(&lCmd, &cCmd);
-	empty(&cCmd);
-	state.cmd = defaultNormalMode.cmd;
-	return pressKeys(mot, 11);
-}
-
-ExitState executeMotion(char const cs, KeySym const *const ks) {
-	state.m.c = state.m.c < 1u ? 1u : state.m.c;
-	if      (ks && *ks == XK_d) historyMove(0, 0, term.row / 2);
-	else if (ks && *ks == XK_u) historyMove(0, 0, -term.row / 2);
-	else if (ks && *ks == XK_f) historyMove(0, 0, term.row-1+(term.c.y=0));
-	else if (ks && *ks == XK_b) historyMove(0, 0, -(term.c.y=term.row-1));
-	else if (ks && *ks == XK_h) overlay = !overlay;
-	else if (cs == 'K') historyMove(0, 0, -(int)state.m.c);
-	else if (cs == 'J') historyMove(0, 0,  (int)state.m.c);
-	else if (cs == 'k') historyMove(0, -(int)state.m.c, 0);
-	else if (cs == 'j') historyMove(0,  (int)state.m.c, 0);
-	else if (cs == 'h') historyMove(-(int)state.m.c, 0, 0);
-	else if (cs == 'l') historyMove( (int)state.m.c, 0, 0);
-	else if (cs == 'H') term.c.y = 0;
-	else if (cs == 'M') term.c.y = term.bot / 2;
-	else if (cs == 'L') term.c.y = term.bot;
-	else if (cs == 's' || cs == 'S') altToggle = cs == 's' ? !altToggle : 1;
-	else if (cs == 'G' || cs == 'g') {
-		if (cs == 'G') term.c = c[0] = c[IS_SET(MODE_ALTSCREEN)+1];
-		if (!IS_SET(MODE_ALTSCREEN)) term.line = &buf[histOff=insertOff];
-	} else if (cs == '0') term.c.x = 0;
-	else if (cs == '$') term.c.x = term.col-1;
-	else if (cs == 't') sel.type = sel.type==SEL_REGULAR ? SEL_RECTANGULAR : SEL_REGULAR;
-	else if (cs == 'n' || cs == 'N') {
-		int const d = ((cs=='N')!=(state.m.search==bw))?-1:1;
-		for (uint32_t i = state.m.c; i && findString(d, 0); --i);
-	} else if (contains(cs, "wWeEbB", 6)) {
-		int const low=cs<=90, off=tolower(cs)!='w', sgn=(tolower(cs)=='b')?-1:1;
-		size_t const l=strlen(wDelL), s=strlen(wDelS), maxIt=rows()*term.col;
-		for (int it=0, on=0; state.m.c > 0 && it < maxIt; ++it) {
-		    // If an offset is to be performed in beginning or not in beginning, move in history.
-			if ((off || it) && historyMove(sgn, 0, 0)) break;
-			// Determine if the category of the current letter changed since last iteration.
-			int n = 1<<(contains(cChar(),wDelS,s) ?(2-low) :!contains(cChar(),wDelL,l)),
-			    found = (on|=n)^n && ((off ?on^n :n)!=1);
-			// If a reverse offset is to be performed and this is the last letter:
-			if (found && off) historyMove(-sgn, 0, 0);
-			// Terminate iteration: reset #it and old n value #on and decrease operation count:
-			if (found) it=-1, on=0, --state.m.c;
-		}
-	} else return failed;
-	state.m.c = 0;
-	return state.cmd.op == yank ? exitMotion : success;
-}
-
-ExitState kPressHist(char const *cs, size_t len, int ctrl, KeySym const *kSym) {
-	historyOpToggle(1, 1);
-	int const prevYOff=IS_SET(MODE_ALTSCREEN)?0:histOff, search=state.m.search&&state.m.active,
-	          prevAltToggle=altToggle, prevOverlay=overlay;
-	int const noOp=!state.cmd.op&&!state.cmd.infix, num=len==1&&BETWEEN(cs[0],48,57),
-	          esc=kSym&&*kSym==XK_Escape, ret=(kSym&&*kSym==XK_Return)||(len==1&&cs[0]=='\n'),
-	          quantifier=num&&(cs[0]!='0'||state.m.c), ins=!search &&noOp &&len &&cs[0]=='i';
-	exited = 0;
-	ExitState result = success;
-	if (esc || ret || ins) { result = exitMotion, len = 0;
-	} else if (kSym && *kSym == XK_BackSpace) {
-		if ((search || state.m.c) && size(&cCmd)) pop(&cCmd);
-		if (search) {
-			if (size(&searchStr)) pop(&searchStr);
-			else result = exitMotion;
-			if (!size(&searchStr)) tfulldirt();
-			applyPos(state.m.searchPos);
-			findString(state.m.search==fw ? 1 : -1, 1);
-		} else if (state.m.c) state.m.c /= 10;
-		len = 0;
-	} else if (search) {
-		if (len >= 1) decodeTo(cs, len, &searchStr);
-		applyPos(state.m.searchPos);
-		findString(state.m.search==fw ? 1 : -1, 1);
-	} else if (len == 0) { result = failed;
-	} else if (quantifier) { state.m.c = min(SHRT_MAX, (int)state.m.c*10+cs[0]-48);
-	} else if (state.cmd.infix && state.cmd.op && (result = expandExpression(cs[0]), len=0)) {
-    } else if (cs[0] == 'd') { state = defaultNormalMode; result = exitMotion; state.m.active = 1;
-	} else if (cs[0] == '.') {
-		if (size(&cCmd)) assign(&lCmd, &cCmd);
-		empty(&cCmd);
-		executeCommand((uint32_t*) lCmd.content, size(&lCmd));
-		empty(&cCmd);
-		len = 0;
-	} else if (cs[0] == 'r') { tfulldirt();
-	} else if (cs[0] == 'c') {
-		empty(&lCmd);
-		empty(&cCmd);
-		empty(&searchStr);
-		tfulldirt();
-		len = 0;
-	} else if (cs[0] == fw || cs[0] == bw) {
-		empty(&searchStr);
-		state.m.search = (Search) cs[0];
-		state.m.searchPos = (Pos){.p={term.c.x, term.c.y, prevYOff}};
-		state.m.active = 1;
-	} else if (cs[0]==infix_i || cs[0]==infix_a) { state.cmd.infix=(Infix) cs[0];
-	} else if (cs[0] == 'y') {
-		if (state.cmd.op) {
-			result = (state.cmd.op == yank || state.cmd.op == visualLine) ? exitOp : exitMotion;
-			if (state.cmd.op == yank) selstart(0, term.c.y, 0);
-		} else selstart(term.c.x, term.c.y, 0);
-		state.cmd.op = yank;
-	} else if (cs[0] == visual || cs[0] == visualLine) {
-		if (state.cmd.op != (Op) cs[0]) {
-			state.cmd = defaultNormalMode.cmd;
-			state.cmd.op = (Op) cs[0];
-			selstart(cs[0] == visualLine ?0 :term.c.x, term.c.y, 0);
-		} else result = exitOp;
-	} else if (!(result =executeMotion((char) (len?cs[0]:0), ctrl?kSym:NULL))) {
-		result=failed;
-		for (size_t i = 0; !ctrl && i < amountNmKeys; ++i)
-			if (cs[0]==nmKeys[i][0] &&
-			   failed!=(result=pressKeys(&nmKeys[i][1], strlen(nmKeys[i])-1))) goto end;
-	} // Operation/Motion finished if valid: update cmd string, extend selection, update search
-	if (result != failed) {
-		if (len == 1 && !ctrl) decodeTo(cs, len, &cCmd);
-		if ((state.cmd.op == visualLine) || ((state.cmd.op == yank) && (result == exitOp))) {
-			int const off = term.c.y + (IS_SET(MODE_ALTSCREEN) ? 0 : histOff) < sel.ob.y; //< Selection start below end.
-			sel.ob.x = off ? term.col - 1 : 0;
-			selextend(off ? 0 : term.col-1, term.c.y, sel.type, 0);
-		} else if (sel.oe.x != -1) {
-			selextend(term.c.x, term.c.y, sel.type, 0);
-		}
-	} // Set repaint for motion or status bar
-	if (!IS_SET(MODE_ALTSCREEN) && prevYOff != histOff) tfulldirt();
-	// Terminate Motion / operation if thus indicated
-	if (result == exitMotion) {
-		if (!state.m.active) result = (exited=noOp) ? finish : exitOp;
-		 state.m.active = (int) (state.m.c = 0u);
-	}
-	if (result == exitOp || result == finish) {
-		if (state.cmd.op == yank) {
-			xsetsel(getsel());
-			xclipcopy();
-		}
-		state = defaultNormalMode;
-		selclear();
-		if (!esc) assign(&lCmd, &cCmd);
-		empty(&cCmd);
-	} // Update the content displayed in the history overlay
-	styleCmd = style[state.cmd.op==yank ? 1 : (state.cmd.op==visual ? 2 :
-	                (state.cmd.op==visualLine ? 3 :0))];
-	int const posLin = !IS_SET(MODE_ALTSCREEN) ? rangeY(insertOff-histOff):0, h=rows()-term.row;
-	if (!posLin || posLin==h || !h) strcpy(posBuffer, posLin ? " [BOT] " : " [TOP] ");
-	else sprintf(posBuffer, " % 3d%c  ", min(100, max(0, (int)(.5 + posLin * 100. / h))),'%');
-	if ((overlay || overlay!=prevOverlay) && term.col>9 && term.row>4) {
-		if (!term.dirty[term.row-1]) xdrawline(term.line[term.row-1], term.col*2/3, term.row-1, term.col-1);
-		if (!term.dirty[term.row-2]) xdrawline(term.line[term.row-2], term.col*2/3, term.row-2, term.col-1);
-	}
-	if (result==finish) altToggle = 0;
-	if (altToggle != prevAltToggle) tswapscreen();
-end:
-	historyOpToggle(-1, 1);
-	return result;
-}
-
-void historyOverlay(int x, int y, Glyph* g) {
-	if (!histMode) return;
-	TCursor const *cHist = histOp ? &term.c : &c[0];
-	if(overlay && term.col > 9 && term.row > 4 && (x > (2*term.col/3)) && (y >= (term.row-2))) {
-		*g = (y == term.row - 2) ? styleSearch : styleCmd;
-		if (y == term.row-2) getChar(&searchStr, g, term.row-2, term.col-2, term.col/3, x);
-		else if (x > term.col - 7) g->u = (Rune)(posBuffer[x - term.col + 7]);
-		else getChar(size(&cCmd) ?&cCmd :&lCmd, g, term.row-1, term.col-7, term.col/3-6, x);
-	} else if (highlighted(x, y)) g->bg = highlightBg, g->fg = highlightFg;
-	else if ((x==cHist->x) ^ (y==cHist->y)) { g->bg = currentBg; g->fg = currentFg; }
-	else if (x==cHist->x) g->mode^=ATTR_REVERSE;
-}
-void historyPreDraw() {
-	static Pos op = {.p={0, 0, 0}};
-	historyOpToggle(1, 0);
-	// Draw the cursor cross if changed
-	if (term.c.y >= term.row || op.p[1] >= term.row) tfulldirt();
-	else if (exited || (op.p[1] != term.c.y)) term.dirty[term.c.y] = term.dirty[op.p[1]] = 1;
-	for (int i=0; (exited || term.c.x != op.p[0]) && i<term.row; ++i) if (!term.dirty[i]) {
-		xdrawline(term.line[i], term.c.x, i, term.c.x + 1);
-		xdrawline(term.line[i], op.p[0], i, op.p[0] + 1);
-	}
-	// Update search results either only for lines with new content or all results if exiting
-	markSearchMatches(exited);
-	op = (Pos){.p = {term.c.x, term.c.y, 0}};
-	historyOpToggle(-1, 0);
-}

normalMode.h

@@ -1,8 +0,0 @@
-void normalMode();
-void historyPreDraw();
-void historyOverlay(int x, int y, Glyph* g);
-void historyModeToggle(int start);
-void historyOpToggle(int, int);
-typedef enum {failed=0, success=1, exitMotion=2, exitOp=3, finish=4} ExitState;
-ExitState kPressHist(char const *txt, size_t len, int ctrl, KeySym const *kSym);
-ExitState pressKeys(char const* s, size_t e);

st-autocomplete

@@ -0,0 +1,310 @@
+#!/usr/bin/perl
+#########################################################################
+# Copyright (C) 2012-2017  Wojciech Siewierski                          #
+#                                                                       #
+# This program is free software: you can redistribute it and/or modify  #
+# it under the terms of the GNU General Public License as published by  #
+# the Free Software Foundation, either version 3 of the License, or     #
+# (at your option) any later version.                                   #
+#                                                                       #
+# This program is distributed in the hope that it will be useful,       #
+# but WITHOUT ANY WARRANTY; without even the implied warranty of        #
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         #
+# GNU General Public License for more details.                          #
+#                                                                       #
+# You should have received a copy of the GNU General Public License     #
+# along with this program.  If not, see <http://www.gnu.org/licenses/>. #
+#########################################################################
+
+my ($cmd, $cursor_row, $cursor_column) = @ARGV;
+
+my $lines = [];
+my $lines1 = [];
+
+my $last_line = -1;
+my $lines_before_cursor = 0;
+
+while (<stdin>)
+{
+	$last_line++;
+
+	s/[^[:print:]]/?/g;
+
+	if ($last_line < $cursor_row)
+	{
+		unshift @{$lines1}, $_;
+		$lines_before_cursor++;
+	}
+	else
+	{
+		unshift @{$lines}, $_;
+	}
+}
+
+foreach (@{$lines1})
+{
+	unshift @{$lines}, $_;
+}
+
+my $cursor_row_in = $cursor_row;
+
+$cursor_row = $last_line;
+
+
+$self = {};
+
+# A reference to a function that transforms the completed word
+# into a regex matching the completions. Usually generated by
+# generate_matcher().
+#
+# For example
+#   $fun = generate_matcher(".*");
+#   $fun->("foo");
+# would return "f.*o.*o"
+#
+# In other words, indirectly decides which characters can
+# appear in the completion.
+my $matcher;
+
+# A regular expression matching a character before each match.
+# For example, it you want to match the text after a
+# whitespace, set it to "\s".
+my $char_class_before;
+
+# A regular expression matching every character in the entered
+# text that will be used to find matching completions. Usually
+# "\w" or similar.
+my $char_class_to_complete;
+
+# A regular expression matching every allowed last character
+# of the completion (uses greedy matching).
+my $char_class_at_end;
+
+if ($cmd eq 'word-complete') {
+	# Basic word completion. Completes the current word
+	# without any special matching.
+	$char_class_before      = '[^-\w]';
+	$matcher                = sub { quotemeta shift }; # identity
+	$char_class_at_end      = '[-\w]';
+	$char_class_to_complete = '[-\w]';
+} elsif ($cmd eq 'WORD-complete') {
+	# The same as above but in the Vim meaning of a "WORD" --
+	# whitespace delimited.
+	$char_class_before      = '\s';
+	$matcher                = sub { quotemeta shift };
+	$char_class_at_end      = '\S';
+	$char_class_to_complete = '\S';
+} elsif ($cmd eq 'fuzzy-word-complete' ||
+		 $cmd eq 'skeleton-word-complete') {
+	# Fuzzy completion of the current word.
+	$char_class_before      = '[^-\w]';
+	$matcher                = generate_matcher('[-\w]*');
+	$char_class_at_end      = '[-\w]';
+	$char_class_to_complete = '[-\w]';
+} elsif ($cmd eq 'fuzzy-WORD-complete') {
+	# Fuzzy completion of the current WORD.
+	$char_class_before      = '\s';
+	$matcher                = generate_matcher('\S*');
+	$char_class_at_end      = '\S';
+	$char_class_to_complete = '\S';
+} elsif ($cmd eq 'fuzzy-complete' ||
+		 $cmd eq 'skeleton-complete') {
+	# Fuzzy completion of an arbitrary text.
+	$char_class_before      = '\W';
+	$matcher                = generate_matcher('.*?');
+	$char_class_at_end      = '\w';
+	$char_class_to_complete = '\S';
+} elsif ($cmd eq 'suffix-complete') {
+	# Fuzzy completion of an completing suffixes, like
+	# completing test=hello from /blah/hello.
+	$char_class_before      = '\S';
+	$matcher                = generate_matcher('\S*');
+	$char_class_at_end      = '\S';
+	$char_class_to_complete = '\S';
+} elsif ($cmd eq 'surround-complete') {
+	# Completing contents of quotes and braces.
+
+	# Here we are using three named groups: s, b, p for quotes, braces
+	# and parenthesis.
+	$char_class_before      = '((?<q>["\'`])|(?<b>\[)|(?<p>\())';
+
+	$matcher                = generate_matcher('.*?');
+
+	# Here we match text till enclosing pair, using perl conditionals in
+	# regexps (?(condition)yes-expression|no-expression).
+	# \0 is used to hack concatenation with '*' later in the code.
+	$char_class_at_end      = '.*?(.(?=(?(<b>)\]|((?(<p>)\)|\g{q})))))\0';
+	$char_class_to_complete = '\S';
+}
+
+
+# use the last used word or read the word behind the cursor
+my $word_to_complete = read_word_at_coord($self, $cursor_row, $cursor_column,
+										  $char_class_to_complete);
+
+print stdout "$word_to_complete\n";
+
+if ($word_to_complete) {
+	while (1) {
+		# ignore the completed word itself
+		$self->{already_completed}{$word_to_complete} = 1;
+
+		# continue the last search or start from the current row
+		my $completion = find_match($self,
+									$word_to_complete,
+									$self->{next_row} // $cursor_row,
+									$matcher->($word_to_complete),
+									$char_class_before,
+									$char_class_at_end);
+		if ($completion) {
+			print stdout $completion."\n".join ("\n", @{$self->{highlight}})."\n";
+		}
+		else {
+			last;
+		}
+	}
+}
+
+######################################################################
+
+sub highlight_match {
+    my ($self, $linenum, $completion) = @_;
+
+    # clear_highlight($self);
+
+    my $line = @{$lines}[$linenum];
+    my $re = quotemeta $completion;
+
+    $line =~ /$re/;
+
+    my $beg = $-[0];
+    my $end = $+[0];
+
+	if ($linenum >= $lines_before_cursor)
+	{
+		$lline = $last_line - $lines_before_cursor;
+		$linenum -= $lines_before_cursor;
+		$linenum = $lline - $linenum;
+		$linenum += $lines_before_cursor;
+	}
+
+
+    $self->{highlight} = [$linenum, $beg, $end];
+}
+
+######################################################################
+
+sub read_word_at_coord {
+    my ($self, $row, $col, $char_class) = @_;
+
+    $_ = substr(@{$lines} [$row], 0, $col); # get the current line up to the cursor...
+    s/.*?($char_class*)$/$1/;               # ...and read the last word from it
+    return $_;
+}
+
+######################################################################
+
+# Returns a function that takes a string and returns that string with
+# this function's argument inserted between its every two characters.
+# The resulting string is used as a regular expression matching the
+# completion candidates.
+sub generate_matcher {
+    my $regex_between = shift;
+
+    sub {
+        $_ = shift;
+
+        # sorry for this lispy code, I couldn't resist ;)
+        (join "$regex_between",
+         (map quotemeta,
+          (split //)))
+    }
+}
+
+######################################################################
+
+# Checks whether the completion found by find_match() was already
+# found and if it was, calls find_match() again to find the next
+# completion.
+#
+# Takes all the arguments that find_match() would take, to make a
+# mutually recursive call.
+sub skip_duplicates {
+    my ($self, $word_to_match, $current_row, $regexp, $char_class_before, $char_class_at_end) = @_;
+    my $completion;
+
+	if ($current_row <= $lines_before_cursor)
+	{
+		$completion = shift @{$self->{matches_in_row}}; # get the leftmost one
+	}
+	else
+	{
+		$completion = pop @{$self->{matches_in_row}}; # get the leftmost one
+	}
+
+    # check for duplicates
+    if (exists $self->{already_completed}{$completion}) {
+        # skip this completion
+        return find_match(@_);
+    } else {
+        $self->{already_completed}{$completion} = 1;
+
+		highlight_match($self,
+						$self->{next_row}+1,
+						$completion);
+
+        return $completion;
+    }
+}
+
+######################################################################
+
+# Finds the next matching completion in the row current row or above
+# while skipping duplicates using skip_duplicates().
+sub find_match {
+    my ($self, $word_to_match, $current_row, $regexp, $char_class_before, $char_class_at_end) = @_;
+    $self->{matches_in_row} //= [];
+
+    # cycle through all the matches in the current row if not starting a new search
+    if (@{$self->{matches_in_row}}) {
+        return skip_duplicates($self, $word_to_match, $current_row, $regexp, $char_class_before, $char_class_at_end);
+    }
+
+
+    my $i;
+    # search through all the rows starting with current one or one above the last checked
+    for ($i = $current_row; $i >= 0; --$i) {
+        my $line = @{$lines}[$i];   # get the line of text from the row
+
+        # if ($i == $cursor_row) {
+        #     $line = substr $line, 0, $cursor_column;
+        # }
+
+        $_ = $line;
+
+        # find all the matches in the current line
+        my $match;
+        push @{$self->{matches_in_row}}, $+{match} while ($_, $match) = /
+                                                                         (.*${char_class_before})
+                                                                         (?<match>
+                                                                             ${regexp}
+                                                                             ${char_class_at_end}*
+                                                                         )
+                                                                     /ix;
+        # corner case: match at the very beginning of line
+        push @{$self->{matches_in_row}}, $+{match} if $line =~ /^(${char_class_before}){0}(?<match>$regexp$char_class_at_end*)/i;
+
+        if (@{$self->{matches_in_row}}) {
+            # remember which row should be searched next
+            $self->{next_row} = --$i;
+
+            # arguments needed for find_match() mutual recursion
+            return skip_duplicates($self, $word_to_match, $i, $regexp, $char_class_before, $char_class_at_end);
+        }
+    }
+
+    # # no more possible completions, revert to the original word
+    # undo_completion($self) if $i < 0;
+
+    return undef;
+}

st.h

@@ -8,7 +8,6 @@
 #define MAX(a, b)		((a) < (b) ? (b) : (a))
 #define LEN(a)			(sizeof(a) / sizeof(a)[0])
 #define BETWEEN(x, a, b)	((a) <= (x) && (x) <= (b))
-#define OUT(x, a, b)		((a) <= (x) || (x) <= (b))
 #define DIVCEIL(n, d)		(((n) + ((d) - 1)) / (d))
 #define DEFAULT(a, b)		(a) = (a) ? (a) : (b)
 #define LIMIT(x, a, b)		(x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
@@ -20,6 +19,7 @@
 
 #define TRUECOLOR(r,g,b)	(1 << 24 | (r) << 16 | (g) << 8 | (b))
 #define IS_TRUECOL(x)		(1 << 24 & (x))
+#define HISTSIZE            2000
 
 enum glyph_attribute {
 	ATTR_NULL       = 0,
@@ -35,7 +35,6 @@ enum glyph_attribute {
 	ATTR_WIDE       = 1 << 9,
 	ATTR_WDUMMY     = 1 << 10,
 	ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
-	ATTR_URL	= 1 << 14,
 };
 
 enum selection_mode {
@@ -79,13 +78,12 @@ typedef union {
 	const char *s;
 } Arg;
 
+void autocomplete (const Arg *);
+
 void die(const char *, ...);
 void redraw(void);
 void draw(void);
 
-void externalpipe(const Arg *);
-void externalpipecopy(const Arg *);
-void externalpipepaste(const Arg *);
 void printscreen(const Arg *);
 void printsel(const Arg *);
 void sendbreak(const Arg *);
@@ -94,8 +92,9 @@ void toggleprinter(const Arg *);
 int tattrset(int);
 void tnew(int, int);
 void tresize(int, int);
-void tmoveto(int x, int y);
 void tsetdirtattr(int);
+void tupdatebgcolor(int, int);
+void tupdatefgcolor(int, int);
 void ttyhangup(void);
 int ttynew(const char *, char *, const char *, char **);
 size_t ttyread(void);
@@ -111,10 +110,6 @@ void selextend(int, int, int, int);
 int selected(int, int);
 char *getsel(void);
 
-void highlighturls(void);
-void unhighlighturls(void);
-void followurl(int, int);
-
 size_t utf8encode(Rune, char *);
 
 void *xmalloc(size_t);
@@ -129,16 +124,8 @@ extern char *vtiden;
 extern wchar_t *worddelimiters;
 extern int allowaltscreen;
 extern int allowwindowops;
-extern int lightmode;
 extern char *termname;
 extern unsigned int tabspaces;
 extern unsigned int defaultfg;
 extern unsigned int defaultbg;
 extern unsigned int defaultcs;
-extern char *urlhandler;
-extern char urlchars[];
-extern char *urlprefixes[];
-extern int nurlprefixes;
-
-char **externalcopycmd();
-char **externalpastecmd();

st.info

@@ -161,7 +161,7 @@ st-mono| simpleterm monocolor,
 	rin=\E[%p1%dT,
 	ritm=\E[23m,
 	rmacs=\E(B,
-	rmcup=\E[?1049l\E[23;0;0t,
+	rmcup=\E[?1049l,
 	rmir=\E[4l,
 	rmkx=\E[?1l\E>,
 	rmso=\E[27m,
@@ -172,7 +172,7 @@ st-mono| simpleterm monocolor,
 	sitm=\E[3m,
 	sgr0=\E[0m,
 	smacs=\E(0,
-	smcup=\E[?1049h\E[22;0;0t,
+	smcup=\E[?1049h,
 	smir=\E[4h,
 	smkx=\E[?1h\E=,
 	smso=\E[7m,

utils.h

@@ -1,23 +0,0 @@
-/// Dynamic memory-chunk, with (1) datatype size, (2/3) initialized / allocated chunk, (4) content
-typedef struct { uint8_t const elSize; uint32_t init, alloc; char* content; } DynamicArray;
-#define UTF8_ARRAY {4, 0, 0, NULL}
-
-static inline int p_alloc(DynamicArray *s, uint32_t amount) {
-	uint32_t const diff=s->init+s->elSize*amount-s->alloc, nas=s->alloc+max(diff,15)*s->elSize;
-	if (s->alloc < s->init + s->elSize * amount) {
-		char* tmp = realloc(s->content, nas);
-		if (!tmp) return 0;
-		s->alloc = nas, s->content = tmp;
-	}
-	return 1;
-}
-static inline char *view(DynamicArray * s, uint32_t i) { return s->content + i*s->elSize; }
-static inline char *end(DynamicArray *s, uint32_t i) { return s->content +s->init-(i+1)*s->elSize; }
-static inline uint32_t getU32(DynamicArray* s, uint32_t i, int b) { return *((uint32_t*) (b ?view(s,i) :end(s,i))); }
-static char *expand(DynamicArray *s) { if (!p_alloc(s, 1)) return NULL; s->init += s->elSize; return end(s, 0); }
-static inline void pop(DynamicArray* s) { s->init -= s->elSize; }
-static inline void empty(DynamicArray* s) { s->init = 0; }
-static inline int size(DynamicArray const * s) { return s->init / s->elSize; }
-static inline void assign(DynamicArray* s, DynamicArray const *o) { 
-	if (p_alloc(s, size(o))) memcpy(s->content, o->content, (s->init=o->init));
-}

win.h

@@ -19,7 +19,6 @@ enum win_mode {
 	MODE_MOUSEMANY   = 1 << 15,
 	MODE_BRCKTPASTE  = 1 << 16,
 	MODE_NUMLOCK     = 1 << 17,
-	MODE_NORMAL      = 1 << 18,
 	MODE_MOUSE       = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
 	                  |MODE_MOUSEMANY,
 };
@@ -33,9 +32,7 @@ void xloadcols(void);
 int xsetcolorname(int, const char *);
 int xgetcolor(int, unsigned char *, unsigned char *, unsigned char *);
 void xseticontitle(char *);
-void xfreetitlestack(void);
+void xsettitle(char *);
-void xsettitle(char *, int);
-void xpushtitle(void);
 int xsetcursor(int);
 void xsetmode(int, unsigned int);
 void xsetpointermotion(int);

x.c

@@ -14,13 +14,11 @@
 #include <X11/keysym.h>
 #include <X11/Xft/Xft.h>
 #include <X11/XKBlib.h>
-#include <X11/Xresource.h>
 
 char *argv0;
 #include "arg.h"
 #include "st.h"
 #include "win.h"
-#include "normalMode.h"
 
 /* types used in config.h */
 typedef struct {
@@ -61,24 +59,14 @@ static void zoom(const Arg *);
 static void zoomabs(const Arg *);
 static void zoomreset(const Arg *);
 static void ttysend(const Arg *);
-static void cyclefonts(const Arg *);
+static void nextscheme(const Arg *);
+static void selectscheme(const Arg *);
+void kscrollup(const Arg *);
+void kscrolldown(const Arg *);
 
 /* config.h for applying patches and the configuration. */
 #include "config.h"
 
-char **externalcopycmd()
-{
-	return (lightmode) ? externalcopylightcmd : externalcopydarkcmd;
-}
-
-char **externalpastecmd()
-{
-	return (lightmode) ? externalpastelightcmd : externalpastedarkcmd;
-}
-
-/* size of title stack */
-#define TITLESTACKSIZE 8
-
 /* XEMBED messages */
 #define XEMBED_FOCUS_IN  4
 #define XEMBED_FOCUS_OUT 5
@@ -201,13 +189,13 @@ static void mousesel(XEvent *, int);
 static void mousereport(XEvent *);
 static char *kmap(KeySym, uint);
 static int match(uint, uint);
+static void updatescheme(void);
 
 static void run(void);
 static void usage(void);
 
 static void (*handler[LASTEvent])(XEvent *) = {
 	[KeyPress] = kpress,
-	[KeyRelease] = kpress,
 	[ClientMessage] = cmessage,
 	[ConfigureNotify] = resize,
 	[VisibilityNotify] = visibility,
@@ -237,8 +225,6 @@ static DC dc;
 static XWindow xw;
 static XSelection xsel;
 static TermWindow win;
-static int tstki; /* title stack index */
-static char *titlestack[TITLESTACKSIZE]; /* title stack */
 
 /* Font Ring Cache */
 enum {
@@ -280,7 +266,6 @@ clipcopy(const Arg *dummy)
 
 	free(xsel.clipboard);
 	xsel.clipboard = NULL;
-	xsetsel(getsel());
 
 	if (xsel.primary != NULL) {
 		xsel.clipboard = xstrdup(xsel.primary);
@@ -335,7 +320,11 @@ void
 zoomreset(const Arg *arg)
 {
 	Arg larg;
-	zoomabs(&larg);
+
+	if (defaultfontsize > 0) {
+		larg.f = defaultfontsize;
+		zoomabs(&larg);
+	}
 }
 
 void
@@ -360,15 +349,6 @@ evrow(XEvent *e)
 	return y / win.ch;
 }
 
-void cyclefonts(const Arg *arg) {
-	currentfont++;
-	currentfont %= (sizeof fonts / sizeof fonts[0]);
-	usedfont = fonts[currentfont];
-	Arg larg;
-	larg.f = usedfontsize;
-	zoomabs(&larg);
-}
-
 void
 mousesel(XEvent *e, int done)
 {
@@ -477,15 +457,6 @@ mouseaction(XEvent *e, uint release)
 	/* ignore Button<N>mask for Button<N> - it's set on release */
 	uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
 
-	if (release == 0 &&
-	    e->xbutton.button == Button1 &&
-	    (match(ControlMask, state) ||
-	     match(ControlMask, state & ~forcemousemod))) {
-		followurl(evrow(e), evcol(e));
-		return 1;
-	}
-
-
 	for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
 		if (ms->release == release &&
 		    ms->button == e->xbutton.button &&
@@ -504,6 +475,7 @@ bpress(XEvent *e)
 {
 	int btn = e->xbutton.button;
 	struct timespec now;
+	int snap;
 
 	if (1 <= btn && btn <= 11)
 		buttons |= 1 << (btn-1);
@@ -522,34 +494,17 @@ bpress(XEvent *e)
 		 * snapping behaviour is exposed.
 		 */
 		clock_gettime(CLOCK_MONOTONIC, &now);
-		int const tripleClick = TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout,
+		if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
-		doubleClick = TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout;
+			snap = SNAP_LINE;
-		if ((mouseYank || mouseSelect) && (tripleClick || doubleClick)) {
+		} else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
-			if (!IS_SET(MODE_NORMAL)) normalMode();
+			snap = SNAP_WORD;
-			historyOpToggle(1, 1);
-			tmoveto(evcol(e), evrow(e));
-			if (tripleClick) {
-				if (mouseYank) pressKeys("dVy", 3);
-				if (mouseSelect) pressKeys("dV", 2);
-			} else if (doubleClick) {
-				if (mouseYank) pressKeys("dyiW", 4);
-				if (mouseSelect) {
-					tmoveto(evcol(e), evrow(e));
-					pressKeys("viW", 3);
-				}
-			}
-			historyOpToggle(-1, 1);
 		} else {
-			if (!IS_SET(MODE_NORMAL)) selstart(evcol(e), evrow(e), 0);
+			snap = 0;
-			else {
-				historyOpToggle(1, 1);
-				tmoveto(evcol(e), evrow(e));
-				pressKeys("v", 1);
-				historyOpToggle(-1, 1);
-			}
 		}
 		xsel.tclick2 = xsel.tclick1;
 		xsel.tclick1 = now;
+
+		selstart(evcol(e), evrow(e), snap);
 	}
 }
 
@@ -759,7 +714,8 @@ brelease(XEvent *e)
 
 	if (mouseaction(e, 1))
 		return;
-	if (btn == Button1 && !IS_SET(MODE_NORMAL)) mousesel(e, 1);
+	if (btn == Button1)
+		mousesel(e, 1);
 }
 
 void
@@ -839,8 +795,6 @@ xloadcolor(int i, const char *name, Color *ncolor)
 	return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
 }
 
-void normalMode() { historyModeToggle((win.mode ^=MODE_NORMAL) & MODE_NORMAL); }
-
 void
 xloadcols(void)
 {
@@ -852,7 +806,7 @@ xloadcols(void)
 		for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
 			XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
 	} else {
-		dc.collen = MAX(LEN(colorname), 256);
+		dc.collen = 258;
 		dc.col = xmalloc(dc.collen * sizeof(Color));
 	}
 
@@ -920,8 +874,8 @@ xhints(void)
 	sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
 	sizeh->height = win.h;
 	sizeh->width = win.w;
-	sizeh->height_inc = 1;
+	sizeh->height_inc = win.ch;
-	sizeh->width_inc = 1;
+	sizeh->width_inc = win.cw;
 	sizeh->base_height = 2 * borderpx;
 	sizeh->base_width = 2 * borderpx;
 	sizeh->min_height = win.ch + 2 * borderpx;
@@ -1195,7 +1149,7 @@ xinit(int cols, int rows)
 	if (!FcInit())
 		die("could not init fontconfig.\n");
 
-	usedfont = (opt_font == NULL) ? fonts[currentfont] : opt_font;
+	usedfont = (opt_font == NULL)? font : opt_font;
 	xloadfonts(usedfont, 0);
 
 	/* colors */
@@ -1311,10 +1265,8 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
 
 	for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
 		/* Fetch rune and mode for current glyph. */
-		Glyph g = glyphs[i];
+		rune = glyphs[i].u;
-		historyOverlay(x+i, y, &g);
+		mode = glyphs[i].mode;
-		rune = g.u;
-		mode = g.mode;
 
 		/* Skip dummy wide-character spacing. */
 		if (mode == ATTR_WDUMMY)
@@ -1548,7 +1500,7 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
 	XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
 
 	/* Render underline and strikethrough. */
-	if (base.mode & ATTR_UNDERLINE || base.mode & ATTR_URL) {
+	if (base.mode & ATTR_UNDERLINE) {
 		XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent * chscale + 1,
 				width, 1);
 	}
@@ -1685,30 +1637,10 @@ xseticontitle(char *p)
 }
 
 void
-xfreetitlestack(void)
+xsettitle(char *p)
-{
-	for (int i = 0; i < LEN(titlestack); i++) {
-		free(titlestack[i]);
-		titlestack[i] = NULL;
-	}
-}
-
-void
-xsettitle(char *p, int pop)
 {
 	XTextProperty prop;
-
+	DEFAULT(p, opt_title);
-	free(titlestack[tstki]);
-	if (pop) {
-		titlestack[tstki] = NULL;
-		tstki = (tstki - 1 + TITLESTACKSIZE) % TITLESTACKSIZE;
-		p = titlestack[tstki] ? titlestack[tstki] : opt_title;
-	} else if (p) {
-		titlestack[tstki] = xstrdup(p);
-	} else {
-		titlestack[tstki] = NULL;
-		p = opt_title;
-	}
 
 	if (p[0] == '\0')
 		p = opt_title;
@@ -1721,16 +1653,6 @@ xsettitle(char *p, int pop)
 	XFree(prop.value);
 }
 
-void
-xpushtitle(void)
-{
-	int tstkin = (tstki + 1) % TITLESTACKSIZE;
-
-	free(titlestack[tstkin]);
-	titlestack[tstkin] = titlestack[tstki] ? xstrdup(titlestack[tstki]) : NULL;
-	tstki = tstkin;
-}
-
 int
 xstartdraw(void)
 {
@@ -1748,7 +1670,6 @@ xdrawline(Line line, int x1, int y1, int x2)
 	i = ox = 0;
 	for (x = x1; x < x2 && i < numspecs; x++) {
 		new = line[x];
-		historyOverlay(x, y1, &new);
 		if (new.mode == ATTR_WDUMMY)
 			continue;
 		if (selected(x, y1))
@@ -1943,31 +1864,23 @@ kpress(XEvent *ev)
 	} else {
 		len = XLookupString(e, buf, sizeof buf, &ksym, NULL);
 	}
-	if (IS_SET(MODE_NORMAL)) {
-		if (kPressHist(buf, len, match(ControlMask, e->state), &ksym)
-		                                      == finish) normalMode();
-		return;
-	}
-
-        /* 0. highlight URLs when control held */
-	if (ksym == XK_Control_L) {
-		highlighturls();
-	} else if (ev->type == KeyRelease && e->keycode == XKeysymToKeycode(e->display, XK_Control_L)) {
-		unhighlighturls();
-	}
-
-	/* KeyRelease not relevant to shortcuts */
-	if (ev->type == KeyRelease)
-		return;
-
 	/* 1. shortcuts */
 	for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
 		if (ksym == bp->keysym && match(bp->mod, e->state)) {
+			if (bp -> func != autocomplete)
+				autocomplete ((const Arg []) { ACMPL_DEACTIVATE });
 			bp->func(&(bp->arg));
 			return;
 		}
 	}
 
+	if (!(
+		len == 0 &&
+		e -> state & ~ignoremod		// ACMPL_ISSUE: I'm not sure that this is the right way
+				| ACMPL_MOD == ACMPL_MOD
+	))
+		autocomplete ((const Arg []) { ACMPL_DEACTIVATE });
+
 	/* 2. custom keys from config.h */
 	if ((customkey = kmap(ksym, e->state))) {
 		ttywrite(customkey, strlen(customkey), 1);
@@ -2124,119 +2037,6 @@ run(void)
 	}
 }
 
-
-#define XRESOURCE_LOAD_META(NAME)					\
-	if(!XrmGetResource(xrdb, "st." NAME, "st." NAME, &type, &ret))	\
-		XrmGetResource(xrdb, "*." NAME, "*." NAME, &type, &ret); \
-	if (ret.addr != NULL && !strncmp("String", type, 64))
-
-#define XRESOURCE_LOAD_STRING(NAME, DST)	\
-	XRESOURCE_LOAD_META(NAME)		\
-		DST = ret.addr;
-
-#define XRESOURCE_LOAD_CHAR(NAME, DST)		\
-	XRESOURCE_LOAD_META(NAME)		\
-		DST = ret.addr[0];
-
-#define XRESOURCE_LOAD_INTEGER(NAME, DST)		\
-	XRESOURCE_LOAD_META(NAME)			\
-		DST = strtoul(ret.addr, NULL, 10);
-
-#define XRESOURCE_LOAD_FLOAT(NAME, DST)		\
-	XRESOURCE_LOAD_META(NAME)		\
-		DST = strtof(ret.addr, NULL);
-
-void
-xrdb_load(void)
-{
-	/* XXX */
-	char *xrm;
-	char *type;
-	XrmDatabase xrdb;
-	XrmValue ret;
-	Display *dpy;
-
-	if(!(dpy = XOpenDisplay(NULL)))
-		die("Can't open display\n");
-
-	XrmInitialize();
-	xrm = XResourceManagerString(dpy);
-
-	if (xrm != NULL) {
-		xrdb = XrmGetStringDatabase(xrm);
-
-		/* handling colors here without macros to do via loop. */
-		int i = 0;
-		char loadValue[12] = "";
-		for (i = 0; i < 256; i++)
-		{
-			sprintf(loadValue, "%s%d", "st.color", i);
-
-			if(!XrmGetResource(xrdb, loadValue, loadValue, &type, &ret))
-			{
-				sprintf(loadValue, "%s%d", "*.color", i);
-				if (!XrmGetResource(xrdb, loadValue, loadValue, &type, &ret))
-					/* reset if not found (unless in range for defaults). */
-					if (i > 15)
-						colorname[i] = NULL;
-			}
-
-			if (ret.addr != NULL && !strncmp("String", type, 64))
-				colorname[i] = ret.addr;
-		}
-
-		XRESOURCE_LOAD_STRING("foreground", colorname[defaultfg]);
-		XRESOURCE_LOAD_STRING("background", colorname[defaultbg]);
-		XRESOURCE_LOAD_STRING("cursorColor", colorname[defaultcs])
-		else {
-		  // this looks confusing because we are chaining off of the if
-		  // in the macro. probably we should be wrapping everything blocks
-		  // so this isn't possible...
-		  defaultcs = defaultfg;
-		}
-		XRESOURCE_LOAD_STRING("reverse-cursor", colorname[defaultrcs])
-		else {
-		  // see above.
-		  defaultrcs = defaultbg;
-		}
-
-		XRESOURCE_LOAD_STRING("font", fonts[0]);
-		XRESOURCE_LOAD_STRING("termname", termname);
-
-		XRESOURCE_LOAD_INTEGER("blinktimeout", blinktimeout);
-		XRESOURCE_LOAD_INTEGER("bellvolume", bellvolume);
-		XRESOURCE_LOAD_INTEGER("borderpx", borderpx);
-		XRESOURCE_LOAD_INTEGER("cursorshape", cursorshape);
-		XRESOURCE_LOAD_INTEGER("lightmode", lightmode);
-
-		XRESOURCE_LOAD_FLOAT("cwscale", cwscale);
-		XRESOURCE_LOAD_FLOAT("chscale", chscale);
-	}
-	XFlush(dpy);
-}
-
-void
-reload(int sig)
-{
-	xrdb_load();
-
-	/* colors, fonts */
-	xloadcols();
-	xunloadfonts();
-	xloadfonts(fonts[currentfont], 0);
-
-	/* pretend the window just got resized */
-	cresize(win.w, win.h);
-
-	redraw();
-
-	/* triggers re-render if we're visible. */
-	ttywrite("\033[O", 3, 1);
-
-	signal(SIGUSR1, reload);
-}
-
-
 void
 usage(void)
 {
@@ -2250,6 +2050,47 @@ usage(void)
 	    " [stty_args ...]\n", argv0, argv0);
 }
 
+void
+nextscheme(const Arg *arg)
+{
+	colorscheme += arg->i;
+	if (colorscheme >= (int)LEN(schemes))
+		colorscheme = 0;
+	else if (colorscheme < 0)
+		colorscheme = LEN(schemes) - 1;
+	updatescheme();
+}
+
+void
+selectscheme(const Arg *arg)
+{
+	if (BETWEEN(arg->i, 0, LEN(schemes)-1)) {
+		colorscheme = arg->i;
+		updatescheme();
+	}
+}
+
+void
+updatescheme(void)
+{
+	int oldbg, oldfg;
+
+	oldbg = defaultbg;
+	oldfg = defaultfg;
+	colorname = schemes[colorscheme].colors;
+	defaultbg = schemes[colorscheme].bg;
+	defaultfg = schemes[colorscheme].fg;
+	defaultcs = schemes[colorscheme].cs;
+	defaultrcs = schemes[colorscheme].rcs;
+	xloadcols();
+	if (defaultbg != oldbg)
+		tupdatebgcolor(oldbg, defaultbg);
+	if (defaultfg != oldfg)
+		tupdatefgcolor(oldfg, defaultfg);
+	cresize(win.w, win.h);
+	redraw();
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -2302,6 +2143,12 @@ main(int argc, char *argv[])
 	} ARGEND;
 
 run:
+	colorname = schemes[colorscheme].colors;
+	defaultbg = schemes[colorscheme].bg;
+	defaultfg = schemes[colorscheme].fg;
+	defaultcs = schemes[colorscheme].cs;
+	defaultrcs = schemes[colorscheme].rcs;
+
 	if (argc > 0) /* eat all remaining arguments */
 		opt_cmd = argv;
 
@@ -2310,8 +2157,6 @@ run:
 
 	setlocale(LC_CTYPE, "");
 	XSetLocaleModifiers("");
-	xrdb_load();
-	signal(SIGUSR1, reload);
 	cols = MAX(cols, 1);
 	rows = MAX(rows, 1);
 	tnew(cols, rows);