~kris/suckless

st

ae2c5886c36728aed9948d652fe64423c857217e — siduck76 5 years ago 8b873db
st-history patch added
10 files changed, 578 insertions(+), 180 deletions(-)

M Makefile
M config.def.h
M config.h
A normalMode.c
A normalMode.h
M st.c
M st.h
A utils.h
M win.h
M x.c
M Makefile => Makefile +1 -1
@@ 21,7 21,7 @@ config.h:
.c.o:
	$(CC) $(STCFLAGS) -c $<

st.o: config.h st.h win.h
st.o: config.h st.h win.h normalMode.h normalMode.c utils.h
x.o: arg.h config.h st.h win.h hb.h
hb.o: st.h
boxdraw.o: config.h st.h boxdraw_data.h

M config.def.h => config.def.h +16 -1
@@ 152,6 152,21 @@ unsigned int defaultbg = 258;
unsigned int defaultcs = 256;
unsigned int defaultrcs = 257;

unsigned int const currentBg = 6, 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
 * 2: Block ("█")


@@ 287,7 302,7 @@ static Shortcut shortcuts[] = {
  { MODKEY,               XK_y,           externalpipe,   {.v = copyurlcmd } },
  { MODKEY,               XK_o,           externalpipe,   {.v = copyoutput } },
  { TERMMOD,              XK_Return,      newterm,        {.i =  0} },

  { MODKEY,               XK_c,           normalMode,     {.i =  0} },
};

/*

M config.h => config.h +17 -0
@@ 152,6 152,22 @@ unsigned int defaultbg = 258;
unsigned int defaultcs = 256;
unsigned int defaultrcs = 257;

unsigned int const currentBg = 6, 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
 * 2: Block ("█")


@@ 263,6 279,7 @@ static Shortcut shortcuts[] = {
  { ControlMask | ShiftMask,               XK_V,           clippaste,      {.i =  0} },
  { XK_ANY_MOD,		Button2,	selpaste,	{.i =  0} },
  { MODKEY,               XK_Num_Lock,    numlock,        {.i =  0} },
  { MODKEY,               XK_c,           normalMode,     {.i =  0} },
  { MODKEY,               XK_Control_L,   iso14755,       {.i =  0} },
  { ShiftMask,            XK_Page_Up,     kscrollup,      {.i = -1} },
  { ShiftMask,            XK_Page_Down,   kscrolldown,    {.i = -1} },

A normalMode.c => normalMode.c +284 -0
@@ 0,0 1,284 @@
#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, 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;
	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);
}

A normalMode.h => normalMode.h +8 -0
@@ 0,0 1,8 @@
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);

M st.c => st.c +187 -166
@@ 1,4 1,5 @@
/* See LICENSE for license details. */
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>


@@ 45,6 46,8 @@
#define ISCONTROLC1(c)		(BETWEEN(c, 0x80, 0x9f))
#define ISCONTROL(c)		(ISCONTROLC0(c) || ISCONTROLC1(c))
#define ISDELIM(u)		(u && wcschr(worddelimiters, u))
static inline int max(int a, int b) { return a > b ? a : b; }
static inline int min(int a, int b) { return a < b ? a : b; }
#define TLINE(y)		((y) < term.scr ? term.hist[((y) + term.histi - \
				term.scr + HISTSIZE + 1) % HISTSIZE] : \
				term.line[(y) - term.scr])


@@ 108,6 111,7 @@ typedef struct {
	int mode;
	int type;
	int snap;
	int swap;
	/*
	 * Selection variables:
	 * nb – normalized coordinates of the beginning of the selection


@@ 194,7 198,6 @@ static void tdeleteline(int);
static void tinsertblank(int);
static void tinsertblankline(int);
static int tlinelen(int);
static void tmoveto(int, int);
static void tmoveato(int, int);
static void tnewline(int);
static void tputtab(int);


@@ 221,7 224,6 @@ static void drawregion(int, int, int, int);

static void selnormalize(void);
static void selscroll(int, int);
static void selsnap(int *, int *, int);

static size_t utf8decode(const char *, Rune *, size_t);
static Rune utf8decodebyte(char, size_t *);


@@ 274,6 276,14 @@ tinsync(uint timeout)
	return su;
}

int buffCols;
extern int const buffSize;
int histOp, histMode, histOff, insertOff, altToggle, *mark;
Line *buf = NULL;
static TCursor c[3];
static inline int rows() { return IS_SET(MODE_ALTSCREEN) ? term.row : buffSize;}
static inline int rangeY(int i) { while (i < 0) i += rows(); return i % rows();}

ssize_t
xwrite(int fd, const char *s, size_t len)
{


@@ 475,6 485,118 @@ tlinehistlen(int y)
	return i;
}

void historyOpToggle(int start, int paint) {
	if ((!histOp == !(histOp + start)) && ((histOp += start) || 1)) return;
	if (histMode && paint && (!IS_SET(MODE_ALTSCREEN) || altToggle)) draw();
	tcursor(CURSOR_SAVE);
	histOp += start;
	if (histMode && altToggle) {
		tswapscreen();
		memset(term.dirty,0,sizeof(*term.dirty)*term.row);
	}
	tcursor(CURSOR_LOAD);
	*(!IS_SET(MODE_ALTSCREEN)?&term.line:&term.alt)=&buf[histOp?histOff:insertOff];
}

void historyModeToggle(int start) {
	if (!(histMode = (histOp = !!start))) {
		selnormalize();
		tfulldirt();
	} else {
		tcursor(CURSOR_SAVE);
		histOp = 0;
		histOff = insertOff;
	}
}

int historyBufferScroll(int n) {
	if (IS_SET(MODE_ALTSCREEN) || !n) return histOp;
	int p=abs(n=(n<0) ? max(n,-term.row) : min(n,term.row)), r=term.row-p,
	          s=sizeof(*term.dirty), *ptr=histOp?&histOff:&insertOff;
	if (!histMode || histOp) tfulldirt(); else {
		memmove(&term.dirty[-min(n,0)], &term.dirty[max(n,0)], s*r);
		memset(&term.dirty[n>0 ? r : 0], 0, s * p);
	}
	term.line = &buf[*ptr = (buffSize+*ptr+n) % buffSize];
	// Cut part of selection removed from buffer, and update sel.ne/b.
	int const prevOffBuf = sel.alt ? 0 : insertOff + term.row;
	if (sel.ob.x != -1 && !histOp && n) {
		int const offBuf = sel.alt ? 0 : insertOff + term.row,
		          pb = rangeY(sel.ob.y - prevOffBuf),
		          pe = rangeY(sel.oe.y - prevOffBuf);
		int const b = rangeY(sel.ob.y - offBuf), nln = n < 0,
		          e = rangeY(sel.oe.y - offBuf), last = offBuf - nln;
		if (pb != b && ((pb < b) != nln)) sel.ob.y = last;
		if (pe != e && ((pe < e) != nln)) sel.oe.y = last;
		if (sel.oe.y == last && sel.ob.y == last) selclear();
	}
	selnormalize();
  // Clear the new region exposed by the shift.
	if (!histOp) tclearregion(0, n>0?r+1:0, buffCols-1, n>0?term.row:p-1);
	return 1;
}

int historyMove(int x, int y, int ly) {
	historyOpToggle(1, 1);
	y += ((term.c.x += x) < 0 ?term.c.x-term.col :term.c.x) / term.col;//< x
	if ((term.c.x %= term.col) < 0) term.c.x += term.col;
	if ((term.c.y += y) >= term.row) ly += term.c.y - term.row + 1;    //< y
	else if (term.c.y < 0) ly += term.c.y;
	term.c.y = MIN(MAX(term.c.y, 0), term.row - 1);
	// Check if scroll is necessary / arrived at top / bottom of terminal history
	int t = 0, b = 0, finTop = ly < 0, finBot = ly > 0;
	if (!IS_SET(MODE_ALTSCREEN)) {
		b=rangeY(insertOff-histOff), t=-rangeY(-term.row-(insertOff-histOff));
		finBot = ly > b, finTop=histMode&&((-ly>-t));
	}
	if ((finTop || finBot) && (x||y)) term.c.x = finBot ? term.col-1 : 0;
	historyBufferScroll(finBot ? b : (finTop ? t : ly));
	historyOpToggle(-1, 1);
	return finTop || finBot;
}

#include "normalMode.c"

void selnormalize(void) {
	historyOpToggle(1, 1);

	int const oldb = sel.nb.y, olde = sel.ne.y;
	if (sel.ob.x == -1) {
		sel.ne.y = sel.nb.y = -1;
	} else {
		int const offsetBuffer = sel.alt ? 0 : insertOff + term.row;
		int const off = sel.alt ? 0 : (histMode ? histOff : insertOff);
		int const nby = rangeY(sel.ob.y - off),
		          ney = rangeY(sel.oe.y - off);
		sel.swap = rangeY(sel.ob.y - offsetBuffer)
		         > rangeY(sel.oe.y - offsetBuffer);
		sel.nb.y = sel.swap ? ney : nby;
		sel.ne.y = !sel.swap ? ney : nby;
		int const cnb = sel.nb.y < term.row, cne = sel.ne.y < term.row;
		if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
			if (cnb) sel.nb.x = (!sel.swap) ? sel.ob.x : sel.oe.x;
			if (cne) sel.ne.x = (!sel.swap) ? sel.oe.x : sel.ob.x;
		} else {
			if (cnb) sel.nb.x = MIN(sel.ob.x, sel.oe.x);
			if (cne) sel.ne.x = MAX(sel.ob.x, sel.oe.x);
		}
	}
	int const nBet=sel.nb.y<=sel.ne.y, oBet=oldb<=olde;
	for (int i = 0; i < term.row; ++i) {
		int const n = nBet ? BETWEEN(i, sel.nb.y, sel.ne.y)
		                   : OUT(i, sel.nb.y, sel.ne.y);
		term.dirty[i] |= (sel.type == SEL_RECTANGULAR && n) ||
		        (n != (oBet ? BETWEEN(i,oldb,olde) : OUT(i,oldb,olde)));

	}
	if (BETWEEN(oldb, 0, term.row - 1)) term.dirty[oldb] = 1;
	if (BETWEEN(olde, 0, term.row - 1)) term.dirty[olde] = 1;
	if (BETWEEN(sel.nb.y, 0, term.row - 1)) term.dirty[sel.nb.y] = 1;
	if (BETWEEN(sel.ne.y, 0, term.row - 1)) term.dirty[sel.ne.y] = 1;

	historyOpToggle(-1, 1);
}

void
selstart(int col, int row, int snap)
{


@@ 484,19 606,14 @@ selstart(int col, int row, int snap)
	sel.alt = IS_SET(MODE_ALTSCREEN);
	sel.snap = snap;
	sel.oe.x = sel.ob.x = col;
	sel.oe.y = sel.ob.y = row;
	sel.oe.y = sel.ob.y = row + !sel.alt * (histMode ? histOff : insertOff);
	if (sel.snap != 0) sel.mode = SEL_READY;
	selnormalize();

	if (sel.snap != 0)
		sel.mode = SEL_READY;
	tsetdirt(sel.nb.y, sel.ne.y);
}

void
selextend(int col, int row, int type, int done)
{
	int oldey, oldex, oldsby, oldsey, oldtype;

	if (sel.mode == SEL_IDLE)
		return;
	if (done && sel.mode == SEL_EMPTY) {


@@ 504,51 621,13 @@ selextend(int col, int row, int type, int done)
		return;
	}

	oldey = sel.oe.y;
	oldex = sel.oe.x;
	oldsby = sel.nb.y;
	oldsey = sel.ne.y;
	oldtype = sel.type;

	sel.oe.x = col;
	sel.oe.y = row;
	sel.oe.y = row + (sel.alt ? 0 : (histMode ? histOff : insertOff));
	selnormalize();
	sel.type = type;

	if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type || sel.mode == SEL_EMPTY)
		tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));

	sel.mode = done ? SEL_IDLE : SEL_READY;
}

void
selnormalize(void)
{
	int i;

	if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
		sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
		sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
	} else {
		sel.nb.x = MIN(sel.ob.x, sel.oe.x);
		sel.ne.x = MAX(sel.ob.x, sel.oe.x);
	}
	sel.nb.y = MIN(sel.ob.y, sel.oe.y);
	sel.ne.y = MAX(sel.ob.y, sel.oe.y);

	selsnap(&sel.nb.x, &sel.nb.y, -1);
	selsnap(&sel.ne.x, &sel.ne.y, +1);

	/* expand selection over line breaks */
	if (sel.type == SEL_RECTANGULAR)
		return;
	i = tlinelen(sel.nb.y);
	if (i < sel.nb.x)
		sel.nb.x = i;
	if (tlinelen(sel.ne.y) <= sel.ne.x)
		sel.ne.x = term.col - 1;
}

int
selected(int x, int y)
{


@@ 559,120 638,49 @@ selected(int x, int y)
	if (sel.type == SEL_RECTANGULAR)
		return BETWEEN(y, sel.nb.y, sel.ne.y)
		    && BETWEEN(x, sel.nb.x, sel.ne.x);

	return BETWEEN(y, sel.nb.y, sel.ne.y)
	    && (y != sel.nb.y || x >= sel.nb.x)
	    && (y != sel.ne.y || x <= sel.ne.x);
}

void
selsnap(int *x, int *y, int direction)
{
	int newx, newy, xt, yt;
	int delim, prevdelim;
	Glyph *gp, *prevgp;

	switch (sel.snap) {
	case SNAP_WORD:
		/*
		 * Snap around if the word wraps around at the end or
		 * beginning of a line.
		 */
		prevgp = &TLINE(*y)[*x];
		prevdelim = ISDELIM(prevgp->u);
		for (;;) {
			newx = *x + direction;
			newy = *y;
			if (!BETWEEN(newx, 0, term.col - 1)) {
				newy += direction;
				newx = (newx + term.col) % term.col;
				if (!BETWEEN(newy, 0, term.row - 1))
					break;

				if (direction > 0)
					yt = *y, xt = *x;
				else
					yt = newy, xt = newx;
				if (!(TLINE(yt)[xt].mode & ATTR_WRAP))
					break;
			}

			if (newx >= tlinelen(newy))
				break;

			gp = &TLINE(newy)[newx];
			delim = ISDELIM(gp->u);
			if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
					|| (delim && gp->u != prevgp->u)))
				break;

			*x = newx;
			*y = newy;
			prevgp = gp;
			prevdelim = delim;
		}
		break;
	case SNAP_LINE:
		/*
		 * Snap around if the the previous line or the current one
		 * has set ATTR_WRAP at its end. Then the whole next or
		 * previous line will be selected.
		 */
		*x = (direction < 0) ? 0 : term.col - 1;
		if (direction < 0) {
			for (; *y > 0; *y += direction) {
				if (!(TLINE(*y-1)[term.col-1].mode
						& ATTR_WRAP)) {
					break;
				}
			}
		} else if (direction > 0) {
			for (; *y < term.row-1; *y += direction) {
				if (!(TLINE(*y)[term.col-1].mode
						& ATTR_WRAP)) {
					break;
				}
			}
		}
		break;
	}
	return ((sel.nb.y > sel.ne.y) ? OUT(y, sel.nb.y, sel.ne.y)
	                              : BETWEEN(y, sel.nb.y, sel.ne.y)) &&
	       (y != sel.nb.y || x >= sel.nb.x) &&
	       (y != sel.ne.y || x <= sel.ne.x);
}

char *
getsel(void)
{
	char *str, *ptr;
	int y, bufsize, lastx, linelen;
	int y, yy, bufsize, lastx;
	Glyph *gp, *last;

	if (sel.ob.x == -1)
		return NULL;

	bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
	int const start = sel.swap ? sel.oe.y : sel.ob.y, h = rows();
	int endy = (sel.swap ? sel.ob.y : sel.oe.y);
	for (; endy < start; endy += h);
	Line * const cbuf = IS_SET(MODE_ALTSCREEN) ? term.line : buf;
	bufsize = (term.col+1) * (endy-start+1 ) * UTF_SIZ;
	assert(bufsize > 0);

	ptr = str = xmalloc(bufsize);

	/* append every set & selected glyph to the selection */
	for (y = sel.nb.y; y <= sel.ne.y; y++) {
		if ((linelen = tlinelen(y)) == 0) {
			*ptr++ = '\n';
			continue;
		}
	for (y = start; y <= endy; y++) {
		yy = y % h;

		if (sel.type == SEL_RECTANGULAR) {
			gp = &TLINE(y)[sel.nb.x];
                	gp = &cbuf[yy][sel.nb.x];
			lastx = sel.ne.x;
		} else {
			gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
			lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
                	gp = &cbuf[yy][start == y ? sel.nb.x : 0];
			lastx = (endy == y) ? sel.ne.x : term.col-1;
		}
		last = &TLINE(y)[MIN(lastx, linelen-1)];
		while (last >= gp && last->u == ' ')
			--last;
         	last = &cbuf[yy][lastx];
		if (!(cbuf[yy][term.col - 1].mode & ATTR_WRAP))
			while (last > gp && last->u == ' ') --last;

		for ( ; gp <= last; ++gp) {
			if (gp->mode & ATTR_WDUMMY)
				continue;

			
                 	if (gp->mode & ATTR_WDUMMY) continue;
			ptr += utf8encode(gp->u, ptr);
		}



@@ 685,7 693,7 @@ getsel(void)
		 * st.
		 * FIXME: Fix the computer world.
		 */
		if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
		if ((y < endy || lastx == term.col - 1) && !(last->mode & ATTR_WRAP))
			*ptr++ = '\n';
	}
	*ptr = 0;


@@ 699,7 707,7 @@ selclear(void)
		return;
	sel.mode = SEL_IDLE;
	sel.ob.x = -1;
	tsetdirt(sel.nb.y, sel.ne.y);
	selnormalize();
}

void


@@ 1047,8 1055,7 @@ tfulldirt(void)
void
tcursor(int mode)
{
	static TCursor c[2];
	int alt = IS_SET(MODE_ALTSCREEN);
	int alt = (histOp) ? 0 : (IS_SET(MODE_ALTSCREEN) + 1);

	if (mode == CURSOR_SAVE) {
		c[alt] = term.c;


@@ 1167,6 1174,7 @@ kscrollup(const Arg* a)
void
tscrolldown(int orig, int n, int copyhist)
{
	if (!orig && historyBufferScroll(-n)) return;
	int i;
	Line temp;



@@ 1194,6 1202,7 @@ tscrolldown(int orig, int n, int copyhist)
void
tscrollup(int orig, int n, int copyhist)
{
	if (!orig && historyBufferScroll(n)) return;
	int i;
	Line temp;



@@ 1368,8 1377,8 @@ tclearregion(int x1, int y1, int x2, int y2)
	if (y1 > y2)
		temp = y1, y1 = y2, y2 = temp;

	LIMIT(x1, 0, term.col-1);
	LIMIT(x2, 0, term.col-1);
	LIMIT(x1, 0, buffCols-1);
	LIMIT(x2, 0, buffCols-1);
	LIMIT(y1, 0, term.row-1);
	LIMIT(y2, 0, term.row-1);



@@ 2629,8 2638,6 @@ check_control_code:
		 */
		return;
	}
	if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
		selclear();

	gp = &term.line[term.c.y][term.c.x];
	if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {


@@ 2706,8 2713,10 @@ void
tresize(int col, int row)
{
	int i, j;
	int minrow = MIN(row, term.row);
	int mincol = MIN(col, term.col);
	int const colSet = col, alt = IS_SET(MODE_ALTSCREEN), ini = buf == NULL;
	col = MAX(col, buffCols);
	row = MIN(row, buffSize);
	int const minrow = MIN(row, term.row), mincol = MIN(col, buffCols);
	int *bp;
	TCursor c;



@@ 2716,6 2725,7 @@ tresize(int col, int row)
		        "tresize: error resizing to %dx%d\n", col, row);
		return;
	}
	if (alt) tswapscreen();

	/*
	 * slide screen to keep cursor where we expect it -


@@ 2723,23 2733,21 @@ tresize(int col, int row)
	 * memmove because we're freeing the earlier lines
	 */
	for (i = 0; i <= term.c.y - row; i++) {
		free(term.line[i]);
		free(term.alt[i]);
	}
	/* ensure that both src and dst are not NULL */
	if (i > 0) {
		memmove(term.line, term.line + i, row * sizeof(Line));
		memmove(term.alt, term.alt + i, row * sizeof(Line));
	}
	for (i += row; i < term.row; i++) {
		free(term.line[i]);
		free(term.alt[i]);
	}

	/* resize to new height */
	term.line = xrealloc(term.line, row * sizeof(Line));
        buf = xrealloc(buf, (buffSize + row) * sizeof(Line));
	term.alt  = xrealloc(term.alt,  row * sizeof(Line));
	term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
        mark = xrealloc(mark, col * row * sizeof(*mark));
	term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));

	for (i = 0; i < HISTSIZE; i++) {


@@ 2752,27 2760,35 @@ tresize(int col, int row)

	/* 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));
		term.alt[i]  = xrealloc(term.alt[i],  col * sizeof(Glyph));
	}

	/* allocate any new rows */
	for (/* i = minrow */; i < row; i++) {
		term.line[i] = xmalloc(col * sizeof(Glyph));
		term.alt[i] = xmalloc(col * sizeof(Glyph));
	}
	if (col > term.col) {
		bp = term.tabs + term.col;
        if (col > buffCols) {
		bp = term.tabs + buffCols;

		memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
                memset(bp, 0, sizeof(*term.tabs) * (col - buffCols));
		while (--bp > term.tabs && !*bp)
			/* nothing */ ;
		for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
			*bp = 1;
	}
	Glyph g=(Glyph){.bg=term.c.attr.bg, .fg=term.c.attr.fg, .u=' ', .mode=0};
	for (i = 0; i < buffSize; ++i) {
		buf[i] = xrealloc(ini ? NULL : buf[i], col*sizeof(Glyph));
		for (int j = ini ? 0 : buffCols; j < col; ++j) buf[i][j] = g;
	}
	for (i = 0; i < row; ++i) buf[buffSize + i] = buf[i];
	term.line = &buf[*(histOp?&histOff:&insertOff) +=MAX(term.c.y-row+1,0)];
	memset(mark, 0, col * row * sizeof(*mark));
	/* update terminal size */
	term.col = col;
        term.col = colSet;
        buffCols = col;
	term.row = row;
        if (alt) tswapscreen();
	/* reset scrolling region */
	tsetscroll(0, row-1);
	/* make use of the LIMIT in tmoveto */


@@ 2801,14 2817,16 @@ resettitle(void)
void
drawregion(int x1, int y1, int x2, int y2)
{
  	if (altToggle && histMode && !histOp)
		memset(term.dirty, 0, sizeof(*term.dirty) * term.row);
	int const o = !IS_SET(MODE_ALTSCREEN) && histMode && !histOp, h =rows();
	int y;
	for (y = y1; y < y2; y++) {
		if (!term.dirty[y])
			continue;

		term.dirty[y] = 0;
		xdrawline(TLINE(y), x1, y, x2);
		int const oy = o ? (y + insertOff - histOff + h) % h : y;
		if (!BETWEEN(oy, 0, term.row-1) || !term.dirty[y]) continue;
		xdrawline(term.line[y], x1, oy, x2);
	}
        memset(&term.dirty[y1], 0, sizeof(*term.dirty) * (y2 - y1));
}

void


@@ 2827,7 2845,10 @@ draw(void)
	if (term.line[term.c.y][cx].mode & ATTR_WDUMMY)
		cx--;

        if (histMode) historyPreDraw();
	drawregion(0, 0, term.col, term.row);
        if (!histMode)

	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],

M st.h => st.h +2 -0
@@ 8,6 8,7 @@
#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)


@@ 110,6 111,7 @@ int tattrset(int);
int tisaltscr(void);
void tnew(int, int);
void tresize(int, int);
void tmoveto(int x, int y);
void tsetdirtattr(int);
void ttyhangup(void);
int ttynew(char *, char *, char *, char **);

A utils.h => utils.h +23 -0
@@ 0,0 1,23 @@
/// 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));
}

M win.h => win.h +1 -0
@@ 19,6 19,7 @@ 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,
};

M x.c => x.c +39 -12
@@ 20,6 20,7 @@ static char *argv0;
#include "arg.h"
#include "st.h"
#include "win.h"
#include "normalMode.h"
#include "hb.h"

/* types used in config.h */


@@ 273,6 274,7 @@ clipcopy(const Arg *dummy)

	free(xsel.clipboard);
	xsel.clipboard = NULL;
	xsetsel(getsel());

	if (xsel.primary != NULL) {
		xsel.clipboard = xstrdup(xsel.primary);


@@ 453,7 455,6 @@ bpress(XEvent *e)
	struct timespec now;
	MouseShortcut *ms;
	MouseKey *mk;
	int snap;

	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
		mousereport(e);


@@ 484,17 485,34 @@ bpress(XEvent *e)
		 * snapping behaviour is exposed.
		 */
		clock_gettime(CLOCK_MONOTONIC, &now);
		if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
			snap = SNAP_LINE;
		} else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
			snap = SNAP_WORD;
		int const tripleClick = TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout,
		doubleClick = TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout;
		if ((mouseYank || mouseSelect) && (tripleClick || doubleClick)) {
			if (!IS_SET(MODE_NORMAL)) normalMode();
			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 {
			snap = 0;
			if (!IS_SET(MODE_NORMAL)) selstart(evcol(e), evrow(e), 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);
	}
}



@@ 699,8 717,7 @@ brelease(XEvent *e)

	if (e->xbutton.button == Button3)
		selpaste(NULL);
	else if (e->xbutton.button == Button1)
		mousesel(e, 1);
	if (e->xbutton.button == Button1 && !IS_SET(MODE_NORMAL)) mousesel(e, 1); // bruh
}

void


@@ 783,6 800,8 @@ 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)
{


@@ 1348,8 1367,10 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x

	for (i = 0, xp = winx, yp = winy + font->ascent + win.cyo; i < len; ++i) {
		/* Fetch rune and mode for current glyph. */
		rune = glyphs[i].u;
		mode = glyphs[i].mode;
		Glyph g = glyphs[i];
		historyOverlay(x+i, y, &g);
		rune = g.u;
		mode = g.mode;

		/* Skip dummy wide-character spacing. */
		if (mode & ATTR_WDUMMY)


@@ 1756,6 1777,7 @@ 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))


@@ 1942,6 1964,11 @@ kpress(XEvent *ev)
		return;

	len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
	if (IS_SET(MODE_NORMAL)) {
		if (kPressHist(buf, len, match(ControlMask, e->state), &ksym)
		                                      == finish) normalMode();
		return;
	}
	/* 1. shortcuts */
	for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
		if (ksym == bp->keysym && match(bp->mod, e->state)) {