diff options
| -rw-r--r-- | config.h | 5 | ||||
| -rw-r--r-- | st.c | 318 | 
2 files changed, 178 insertions, 145 deletions
@@ -31,10 +31,6 @@ static Key key[] = {  	{ XK_End,    "\033[4~" },  	{ XK_Prior,  "\033[5~" },  	{ XK_Next,   "\033[6~" }, -	{ XK_Left,   "\033[D" }, -	{ XK_Right,  "\033[C" }, -	{ XK_Up,     "\033[A" }, -	{ XK_Down,   "\033[B" },  };  static char gfx[] = { @@ -70,4 +66,5 @@ static char gfx[] = {  	['l'] = '+',  	['k'] = '+',  	['x'] = '|', +	[255] = 0,  }; @@ -23,10 +23,10 @@  #define TNAME "xterm"  /* Arbitrary sizes */ -#define TITLESIZ 256 -#define ESCSIZ 256 -#define ESCARGSIZ 16 -#define MAXDRAWBUF 1024 +#define ESC_TITLE_SIZ 256 +#define ESC_BUF_SIZ   256 +#define ESC_ARG_SIZ   16 +#define DRAW_BUF_SIZ  1024  #define SERRNO strerror(errno)  #define MIN(a, b)  ((a) < (b) ? (a) : (b)) @@ -38,21 +38,19 @@  #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)  /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */ -enum { ATnone=0 , ATreverse=1 , ATunderline=2, ATbold=4, ATgfx=8 }; -enum { CSup, CSdown, CSright, CSleft, CShide, CSdraw, CSsave, CSload }; -enum { CRset=1, CRupdate=2 }; -enum { TMwrap=1, TMinsert=2 }; -enum { ESCin=1, ESCcsi=2, ESCosc=4, ESCtitle=8, ESCcharset=16 }; -enum { SCupdate, SCredraw }; - -typedef int Color; +enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 }; +enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT, CURSOR_HIDE, CURSOR_DRAW, CURSOR_SAVE, CURSOR_LOAD }; +enum { GLYPH_SET=1, GLYPH_DIRTY=2 }; +enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4 }; +enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 }; +enum { SCREEN_UPDATE, SCREEN_REDRAW };  typedef struct {  	char c;     /* character code  */  	char mode;  /* attribute flags */ -	Color fg;   /* foreground      */ -	Color bg;   /* background      */ -	char state; /* state flag      */ +	int fg;     /* foreground      */ +	int bg;     /* background      */ +	char state; /* state flags     */  } Glyph;  typedef Glyph* Line; @@ -67,11 +65,11 @@ typedef struct {  /* CSI Escape sequence structs */  /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */  typedef struct { -	char buf[ESCSIZ]; /* raw string */ -	int len;          /* raw string length */ +	char buf[ESC_BUF_SIZ]; /* raw string */ +	int len;               /* raw string length */  	char priv; -	int arg[ESCARGSIZ]; -	int narg;           /* nb of args */ +	int arg[ESC_ARG_SIZ]; +	int narg;              /* nb of args */  	char mode;  } CSIEscape; @@ -83,9 +81,9 @@ typedef struct {  	TCursor c;  /* cursor */  	int top;    /* top    scroll limit */  	int bot;    /* bottom scroll limit */ -	int mode;   /* terminal mode */ -	int esc; -	char title[TITLESIZ]; +	int mode;   /* terminal mode flags */ +	int esc;    /* escape state flags */ +	char title[ESC_TITLE_SIZ];  	int titlelen;  } Term; @@ -102,7 +100,7 @@ typedef struct {  typedef struct {  	KeySym k; -	char s[ESCSIZ]; +	char s[ESC_BUF_SIZ];  } Key;  #include "config.h" @@ -126,8 +124,8 @@ static void csiparse(void);  static void csireset(void);  static void tclearregion(int, int, int, int); -static void tcpos(int);  static void tcursor(int); +static void tmovecursor(int);  static void tdeletechar(int);  static void tdeleteline(int);  static void tinsertblank(int); @@ -187,7 +185,7 @@ tdump(void) {  				putchar('#');  			else {  				c = term.line[row][col]; -				putchar(c.state & CRset ? c.c : '.'); +				putchar(c.state & GLYPH_SET ? c.c : '.');  			}  		}  		putchar('\n'); @@ -218,7 +216,7 @@ xbell(void) { /* visual bell */  	XSetForeground(xw.dis, dc.gc, dc.col[BellCol]);  	XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);  	/* usleep(30000); */ -	draw(SCredraw); +	draw(SCREEN_REDRAW);  }  void  @@ -281,13 +279,10 @@ ttyread(void) {  	char buf[BUFSIZ] = {0};  	int ret; -	switch(ret = read(cmdfd, buf, BUFSIZ)) { -	case -1:  +	if((ret = read(cmdfd, buf, BUFSIZ)) < 0)  		die("Couldn't read from shell: %s\n", SERRNO); -		break; -	default: +	else  		tputs(buf, ret); -	}  }  void @@ -308,14 +303,13 @@ ttyresize(int x, int y) {  }  void -tcpos(int mode) { -	static int x = 0; -	static int y = 0; - -	if(mode == CSsave) -		x = term.c.x, y = term.c.y; -	else if(mode == CSload) -		tmoveto(x, y); +tcursor(int mode) { +	static TCursor c; + +	if(mode == CURSOR_SAVE) +		c = term.c; +	else if(mode == CURSOR_LOAD) +		term.c = c, tmoveto(c.x, c.y);  }  void @@ -323,9 +317,9 @@ tnew(int col, int row) {   /* screen size */  	term.row = row, term.col = col;  	term.top = 0, term.bot = term.row - 1;  	/* mode */ -	term.mode = TMwrap; +	term.mode = MODE_WRAP;  	/* cursor */ -	term.c.attr.mode = ATnone; +	term.c.attr.mode = ATTR_NULL;  	term.c.attr.fg = DefaultFG;  	term.c.attr.bg = DefaultBG;  	term.c.x = term.c.y = 0; @@ -370,7 +364,7 @@ csiparse(void) {  			escseq.arg[escseq.narg] *= 10;  			escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;  		} -		if(*p == ';' && escseq.narg+1 < ESCARGSIZ) +		if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)  			escseq.narg++, p++;  		else {  			escseq.mode = *p; @@ -387,27 +381,27 @@ tmoveto(int x, int y) {  }  void -tcursor(int dir) { +tmovecursor(int dir) {  	int xf = term.c.x, yf = term.c.y;  	switch(dir) { -	case CSup: +	case CURSOR_UP:  		yf--;  		break; -	case CSdown: +	case CURSOR_DOWN:  		yf++;  		break; -	case CSleft: +	case CURSOR_LEFT:  		xf--; -		if(term.mode & TMwrap && xf < 0) { +		if(term.mode & MODE_WRAP && xf < 0) {  			xf = term.col-1, yf--;  			if(yf < term.top)  				yf = term.top, xf = 0;  		}  		break; -	case CSright: +	case CURSOR_RIGHT:  		xf++; -		if(term.mode & TMwrap && xf >= term.col) { +		if(term.mode & MODE_WRAP && xf >= term.col) {  			xf = 0, yf++;  			if(yf > term.bot)  				yf = term.bot, tscroll(); @@ -421,7 +415,7 @@ void  tsetchar(char c) {  	term.line[term.c.y][term.c.x] = term.c.attr;  	term.line[term.c.y][term.c.x].c = c; -	term.line[term.c.y][term.c.x].state |= CRset | CRupdate; +	term.line[term.c.y][term.c.x].state |= GLYPH_SET | GLYPH_DIRTY;  }  void @@ -477,7 +471,7 @@ tsetlinestate(int n, int state) {  }  void -tinsertblankline (int n) { +tinsertblankline(int n) {  	int i;  	Line blank;  	int bot = term.bot; @@ -497,8 +491,8 @@ tinsertblankline (int n) {  		term.line[i-n] = blank;  		/* blank it */  		memset(blank, 0, term.col * sizeof(Glyph)); -		tsetlinestate(i, CRupdate); -		tsetlinestate(i-n, CRupdate); +		tsetlinestate(i, GLYPH_DIRTY); +		tsetlinestate(i-n, GLYPH_DIRTY);  	}  } @@ -523,8 +517,8 @@ tdeleteline(int n) {  		term.line[i+n] = blank;  		/* blank it */  		memset(blank, 0, term.col * sizeof(Glyph)); -		tsetlinestate(i, CRupdate); -		tsetlinestate(i-n, CRupdate); +		tsetlinestate(i, GLYPH_DIRTY); +		tsetlinestate(i-n, GLYPH_DIRTY);  	}  } @@ -535,30 +529,30 @@ tsetattr(int *attr, int l) {  	for(i = 0; i < l; i++) {  		switch(attr[i]) {  		case 0: -			term.c.attr.mode &= ~(ATreverse | ATunderline | ATbold); +			term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);  			term.c.attr.fg = DefaultFG;  			term.c.attr.bg = DefaultBG;  			break;  		case 1: -			term.c.attr.mode |= ATbold;	  +			term.c.attr.mode |= ATTR_BOLD;	   			break;  		case 4:  -			term.c.attr.mode |= ATunderline; +			term.c.attr.mode |= ATTR_UNDERLINE;  			break;  		case 7:  -			term.c.attr.mode |= ATreverse;	 +			term.c.attr.mode |= ATTR_REVERSE;	  			break;  		case 8: -			term.c.hidden = CShide; +			term.c.hidden = CURSOR_HIDE;  			break;  		case 22:  -			term.c.attr.mode &= ~ATbold;   +			term.c.attr.mode &= ~ATTR_BOLD;    			break;  		case 24:  -			term.c.attr.mode &= ~ATunderline; +			term.c.attr.mode &= ~ATTR_UNDERLINE;  			break;  		case 27:  -			term.c.attr.mode &= ~ATreverse;	  +			term.c.attr.mode &= ~ATTR_REVERSE;	   			break;  		case 39:  			term.c.attr.fg = DefaultFG; @@ -593,57 +587,56 @@ tsetscroll(int t, int b) {  void  csihandle(void) { -	if(escseq.priv) -		csidump();  	switch(escseq.mode) { -	unknown:  	default: -		fprintf(stderr, "erresc: unknown sequence\n"); +	unknown: +		printf("erresc: unknown sequence -- ");  		csidump();  		/* die(""); */  		break; -	case '@': /* Insert <n> blank char */ +	case '@': /* ICH -- Insert <n> blank char */  		DEFAULT(escseq.arg[0], 1);  		tinsertblank(escseq.arg[0]);  		break; -	case 'A': /* Cursor <n> Up */ +	case 'A': /* CUU -- Cursor <n> Up */  	case 'e':  		DEFAULT(escseq.arg[0], 1);  		tmoveto(term.c.x, term.c.y-escseq.arg[0]);  		break; -	case 'B': /* Cursor <n> Down */ +	case 'B': /* CUD -- Cursor <n> Down */  		DEFAULT(escseq.arg[0], 1);  		tmoveto(term.c.x, term.c.y+escseq.arg[0]);  		break; -	case 'C': /* Cursor <n> Forward */ +	case 'C': /* CUF -- Cursor <n> Forward */  	case 'a':  		DEFAULT(escseq.arg[0], 1);  		tmoveto(term.c.x+escseq.arg[0], term.c.y);  		break; -	case 'D': /* Cursor <n> Backward */ +	case 'D': /* CUB -- Cursor <n> Backward */  		DEFAULT(escseq.arg[0], 1);  		tmoveto(term.c.x-escseq.arg[0], term.c.y);  		break; -	case 'E': /* Cursor <n> Down and first col */ +	case 'E': /* CNL -- Cursor <n> Down and first col */  		DEFAULT(escseq.arg[0], 1);  		tmoveto(0, term.c.y+escseq.arg[0]);  		break; -	case 'F': /* Cursor <n> Up and first col */ +	case 'F': /* CPL -- Cursor <n> Up and first col */  		DEFAULT(escseq.arg[0], 1);  		tmoveto(0, term.c.y-escseq.arg[0]);  		break; -	case 'G': /* Move to <col> */ -	case '`': +	case 'G': /* CHA -- Move to <col> */ +	case '`': /* XXX: HPA -- same? */  		DEFAULT(escseq.arg[0], 1);       	tmoveto(escseq.arg[0]-1, term.c.y);  		break; -	case 'H': /* Move to <row> <col> */ -	case 'f': +	case 'H': /* CUP -- Move to <row> <col> */ +	case 'f': /* XXX: HVP -- same? */  		DEFAULT(escseq.arg[0], 1);  		DEFAULT(escseq.arg[1], 1);  		tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);  		break; -	case 'J': /* Clear screen */ +	/* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */ +	case 'J': /* ED -- Clear screen */  		switch(escseq.arg[0]) {  		case 0: /* below */  			tclearregion(term.c.x, term.c.y, term.col-1, term.row-1); @@ -653,10 +646,13 @@ csihandle(void) {  			break;  		case 2: /* all */  			tclearregion(0, 0, term.col-1, term.row-1); -			break;				   +			break; +		case 3: /* XXX: erase saved lines (xterm) */ +		default: +			goto unknown;  		}  		break; -	case 'K': /* Clear line */ +	case 'K': /* EL -- Clear line */  		switch(escseq.arg[0]) {  		case 0: /* right */  			tclearregion(term.c.x, term.c.y, term.col-1, term.c.y); @@ -669,54 +665,77 @@ csihandle(void) {  			break;  		}  		break; -	case 'S': -	case 'L': /* Insert <n> blank lines */ +	case 'S': /* XXX: SU -- Scroll <n> line up (faked) */  +	case 'L': /* IL -- Insert <n> blank lines */  		DEFAULT(escseq.arg[0], 1);  		tinsertblankline(escseq.arg[0]);  		break; -	case 'l': +	case 'l': /* RM -- Reset Mode */  		if(escseq.priv) {  			switch(escseq.arg[0]) { +			case 1: +				term.mode &= ~MODE_APPKEYPAD; +				break;  			case 7: -				term.mode &= ~TMwrap; +				term.mode &= ~MODE_WRAP; +				break; +			case 12: /* att610 -- Stop blinking cursor (IGNORED) */  				break;  			case 25:  				term.c.hidden = 1;  				break; +			case 1048: /* XXX: no alt. screen to erase/save */ +			case 1049: +				tcursor(CURSOR_LOAD); +				tclearregion(0, 0, term.col-1, term.row-1); +				break; +			default: +				goto unknown;  			} -		} +		} else goto unknown;  		break; -	case 'M': /* Delete <n> lines */ +	case 'M': /* DL -- Delete <n> lines */  		DEFAULT(escseq.arg[0], 1);  		tdeleteline(escseq.arg[0]);  		break; -	case 'X': -	case 'P': /* Delete <n> char */ +	case 'X': /* ECH -- Erase <n> char XXX: same? */ +	case 'P': /* DCH -- Delete <n> char */  		DEFAULT(escseq.arg[0], 1);  		tdeletechar(escseq.arg[0]);  		break; -	case 'd': /* Move to <row> */ +	/* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */ +	case 'd': /* VPA -- Move to <row> */  		DEFAULT(escseq.arg[0], 1);  		tmoveto(term.c.x, escseq.arg[0]-1);  		break; -	case 'h': /* Set terminal mode */ -		if(escseq.priv) +	case 'h': /* SM -- Set terminal mode */ +		if(escseq.priv) {  			switch(escseq.arg[0]) { +			case 1: +				term.mode |= MODE_APPKEYPAD; +				break;  			case 7: -				term.mode |= TMwrap; +				term.mode |= MODE_WRAP; +				break; +			case 12: /* att610 -- Start blinking cursor (IGNORED) */  				break;  			case 25:  				term.c.hidden = 0;  				break; -			case 1034: -				/* XXX: Interpret "meta" key, sets eighth bit. */ +			case 1048:  +			case 1049: /* XXX: no alt. screen to erase/save */ +				tcursor(CURSOR_SAVE); +				tclearregion(0, 0, term.col-1, term.row-1);  				break; +			default: +				goto unknown;  			} +		} else goto unknown;  		break; -	case 'm': /* Terminal attribute (color) */ +	case 'm': /* SGR -- Terminal attribute (color) */  		tsetattr(escseq.arg, escseq.narg);  		break; -	case 'r': +	case 'r': /* DECSTBM -- Set Scrolling Region */  		if(escseq.priv)  			goto unknown;  		else { @@ -725,11 +744,11 @@ csihandle(void) {  			tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);  		}  		break; -	case 's': /* Save cursor position */ -		tcpos(CSsave); +	case 's': /* DECSC -- Save cursor position (ANSI.SYS) */ +		tcursor(CURSOR_SAVE);  		break; -	case 'u': /* Load cursor position */ -		tcpos(CSload); +	case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */ +		tcursor(CURSOR_LOAD);  		break;  	}  } @@ -759,70 +778,82 @@ tputtab(void) {  		space--;  	for(; space > 0; space--) -		tcursor(CSright); +		tmovecursor(CURSOR_RIGHT);  }  void  tputc(char c) { -#if 0 -	dump(c); -#endif	 -	if(term.esc & ESCin) { -		if(term.esc & ESCcsi) { +	/* dump(c); */ +	if(term.esc & ESC_START) { +		if(term.esc & ESC_CSI) {  			escseq.buf[escseq.len++] = c; -			if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESCSIZ) { +			if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {  				term.esc = 0;  				csiparse(), csihandle();  			} -		} else if (term.esc & ESCosc) { +		} else if(term.esc & ESC_OSC) {  			if(c == ';') {  				term.titlelen = 0; -				term.esc = ESCin | ESCtitle; +				term.esc = ESC_START | ESC_TITLE;  			} -		} else if(term.esc & ESCtitle) { -			if(c == '\a' || term.titlelen+1 >= TITLESIZ) { +		} else if(term.esc & ESC_TITLE) { +			if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {  				term.esc = 0;  				term.title[term.titlelen] = '\0';  				XStoreName(xw.dis, xw.win, term.title);  			} else {  				term.title[term.titlelen++] = c;  			} -		} else if(term.esc & ESCcharset) { -			printf("ESC ( %c\n", c); +		} else if(term.esc & ESC_ALTCHARSET) {  			switch(c) {  			case '0': /* Line drawing crap */ -				term.c.attr.mode |= ATgfx; +				term.c.attr.mode |= ATTR_GFX;  				break;  			case 'B': /* Back to regular text */ -				term.c.attr.mode &= ~ATgfx; +				term.c.attr.mode &= ~ATTR_GFX;  				break; +			default: +				printf("esc unhandled charset: ESC ( %c\n", c);  			}  			term.esc = 0;  		} else {		  			switch(c) {  			case '[': -				term.esc |= ESCcsi; +				term.esc |= ESC_CSI;  				break;  			case ']': -				term.esc |= ESCosc; +				term.esc |= ESC_OSC;  				break;  			case '(': -				term.esc |= ESCcharset; +				term.esc |= ESC_ALTCHARSET;  				break;  			case 'A':  				tmoveto(term.c.x, term.c.y-1); +				term.esc = 0;  				break;  			case 'B':  				tmoveto(term.c.x, term.c.y+1); +				term.esc = 0;  				break;  			case 'C':  				tmoveto(term.c.x+1, term.c.y); +				term.esc = 0;  				break;  			case 'D':  				tmoveto(term.c.x-1, term.c.y); +				term.esc = 0; +				break; +			case '=': /* DECPAM */ +				term.mode |= MODE_APPKEYPAD; +				term.esc = 0; +				break; +			case '>': /* DECPNM */ +				term.mode &= ~MODE_APPKEYPAD; +				term.esc = 0;  				break;  			default:  				fprintf(stderr, "erresc: unknown sequence ESC %02X '%c'\n", c, isprint(c)?c:'.'); +				term.esc = 0;  			}  		}  	} else { @@ -831,7 +862,7 @@ tputc(char c) {  			tputtab();  			break;  		case '\b': -			tcursor(CSleft); +			tmovecursor(CURSOR_LEFT);  			break;  		case '\r':  			tmoveto(0, term.c.y); @@ -844,11 +875,11 @@ tputc(char c) {  			break;  		case '\033':  			csireset(); -			term.esc = ESCin; +			term.esc = ESC_START;  			break;  		default:  			tsetchar(c); -			tcursor(CSright); +			tmovecursor(CURSOR_RIGHT);  			break;  		}  	} @@ -917,7 +948,7 @@ xscroll(void) {  	int dsty = term.top * xw.ch;  	int height = (term.bot-term.top) * xw.ch; -	xcursor(CShide); +	xcursor(CURSOR_HIDE);  	XCopyArea(xw.dis, xw.win, xw.win, dc.gc, 0, srcy, xw.w, height, 0, dsty);  	xclear(0, term.bot, term.col-1, term.bot);  } @@ -950,7 +981,7 @@ xinit(void) {  	term.c.attr.fg = DefaultFG;  	term.c.attr.bg = DefaultBG; -	term.c.attr.mode = ATnone; +	term.c.attr.mode = ATTR_NULL;  	/* windows */  	xw.h = term.row * xw.ch;  	xw.w = term.col * xw.cw; @@ -977,12 +1008,12 @@ xinit(void) {  }  void -xdraws (char *s, Glyph base, int x, int y, int len) { +xdraws(char *s, Glyph base, int x, int y, int len) {  	unsigned long xfg, xbg;  	int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;  	int i; -	if(base.mode & ATreverse) +	if(base.mode & ATTR_REVERSE)  		xfg = dc.col[base.bg], xbg = dc.col[base.fg];  	else  		xfg = dc.col[base.fg], xbg = dc.col[base.bg]; @@ -990,15 +1021,13 @@ xdraws (char *s, Glyph base, int x, int y, int len) {  	XSetBackground(xw.dis, dc.gc, xbg);  	XSetForeground(xw.dis, dc.gc, xfg); -	if(base.mode & ATgfx) { -	    +	if(base.mode & ATTR_GFX)  		for(i = 0; i < len; i++)  			s[i] = gfx[s[i]]; -	}  	XDrawImageString(xw.dis, xw.win, dc.gc, winx, winy, s, len); -	if(base.mode & ATunderline) +	if(base.mode & ATTR_UNDERLINE)  		XDrawLine(xw.dis, xw.win, dc.gc, winx, winy+1, winx+width-1, winy+1);  } @@ -1008,7 +1037,7 @@ xdrawc(int x, int y, Glyph g) {  	unsigned long xfg, xbg;  	/* reverse video */ -	if(g.mode & ATreverse) +	if(g.mode & ATTR_REVERSE)  		xfg = dc.col[g.bg], xbg = dc.col[g.fg];  	else  		xfg = dc.col[g.fg], xbg = dc.col[g.bg]; @@ -1022,20 +1051,20 @@ void  xcursor(int mode) {  	static int oldx = 0;  	static int oldy = 0; -	Glyph g = {' ', ATnone, DefaultBG, DefaultCS, 0}; +	Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};  	LIMIT(oldx, 0, term.col-1);  	LIMIT(oldy, 0, term.row-1); -	if(term.line[term.c.y][term.c.x].state & CRset) +	if(term.line[term.c.y][term.c.x].state & GLYPH_SET)  		g.c = term.line[term.c.y][term.c.x].c;  	/* remove the old cursor */ -	if(term.line[oldy][oldx].state & CRset) +	if(term.line[oldy][oldx].state & GLYPH_SET)  		xdrawc(oldx, oldy, term.line[oldy][oldx]);  	else   		xclear(oldx, oldy, oldx, oldy);  	/* draw the new one */ -	if(mode == CSdraw) { +	if(mode == CURSOR_DRAW) {  		xdrawc(term.c.x, term.c.y, g);  		oldx = term.c.x, oldy = term.c.y;  	} @@ -1045,14 +1074,14 @@ void  draw(int redraw_all) {  	int i, x, y, ox;  	Glyph base, new; -	char buf[MAXDRAWBUF]; +	char buf[DRAW_BUF_SIZ];  	for(y = 0; y < term.row; y++) {  		base = term.line[y][0];  		i = ox = 0;  		for(x = 0; x < term.col; x++) {  			new = term.line[y][x]; -			if(!ATTRCMP(base, new) && i < MAXDRAWBUF) +			if(!ATTRCMP(base, new) && i < DRAW_BUF_SIZ)  				buf[i++] = new.c;  			else {  				xdraws(buf, base, ox, y, i); @@ -1065,12 +1094,12 @@ draw(int redraw_all) {  		xdraws(buf, base, ox, y, i);  	}  	if(!term.c.hidden) -		xcursor(CSdraw); +		xcursor(CURSOR_DRAW);  }  void  expose(XEvent *ev) { -	draw(SCredraw); +	draw(SCREEN_REDRAW);  }  char* @@ -1105,6 +1134,13 @@ kpress(XEvent *ev) {  		ttywrite(buf, len);  	} else  		switch(ksym) { +		case XK_Up: +		case XK_Down: +		case XK_Left: +		case XK_Right: +			sprintf(buf, "\033%c%c", term.mode & MODE_APPKEYPAD ? 'O' : '[', "DACB"[ksym - XK_Left]); +			ttywrite(buf, 3); +			break;  		case XK_Insert:  			if(shift)  				/* XXX: paste X clipboard */; @@ -1126,7 +1162,7 @@ resize(XEvent *e) {  		ttyresize(col, row);  		xw.w = e->xconfigure.width;  		xw.h = e->xconfigure.height; -		draw(SCredraw); +		draw(SCREEN_REDRAW);  	}  } @@ -1151,7 +1187,7 @@ run(void) {  		}  		if(FD_ISSET(cmdfd, &rfd)) {  			ttyread(); -			draw(SCupdate); +			draw(SCREEN_UPDATE);  		}  		while(XPending(xw.dis)) {  			XNextEvent(xw.dis, &ev);  | 
