2 Generalized console input/output handler
3 A maintanable replacement for readline()
5 Kern Sibbald, December MMIII
7 This code is in part derived from code that I wrote in
8 1981, so some of it is a bit old and could use a cleanup.
12 Copyright (C) 1981-2004 Kern Sibbald and John Walker
14 This program is free software; you can redistribute it and/or
15 modify it under the terms of the GNU General Public License as
16 published by the Free Software Foundation; either version 2 of
17 the License, or (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 General Public License for more details.
24 You should have received a copy of the GNU General Public
25 License along with this program; if not, write to the Free
26 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
41 /* We are in Bacula */
51 /* From termios library */
55 /* Forward referenced functions */
56 static void sigintcatcher(int);
57 static void add_smap(char *str, int func);
60 /* Global variables */
62 static char *t_up = "\n"; /* scroll up character */
63 static char *t_honk = "\007"; /* sound beep */
64 static char *t_il; /* insert line */
65 static char *t_dl; /* delete line */
66 static char *t_cs; /* clear screen */
67 static char *t_cl; /* clear line */
68 static int t_width = 79; /* terminal width */
69 static int t_height = 24; /* terminal height */
70 static int linsdel_ok = 0; /* set if term has line insert & delete fncs */
72 static char *t_cm; /* cursor positioning */
73 static char *t_ti; /* init sequence */
74 static char *t_te; /* end sequence */
75 static char *t_do; /* down one line */
76 static char *t_sf; /* scroll screen one line up */
78 /* Keypad and Function Keys */
79 static char *kl; /* left key */
80 static char *kr; /* right */
81 static char *ku; /* up */
82 static char *kd; /* down */
83 static char *kh; /* home */
84 static char *kb; /* backspace */
85 static char *kD; /* delete key */
86 static char *kI; /* insert */
87 static char *kN; /* next page */
88 static char *kP; /* previous page */
89 static char *kH; /* home */
90 static char *kE; /* end */
93 #define EOS '\0' /* end of string terminator */
99 * Stab entry. Input chars (str), the length, and the desired
102 typedef struct s_stab {
111 static stab_t **stab = NULL; /* array of stabs by length */
112 static int num_stab; /* size of stab array */
114 static bool old_term_params_set = false;
115 static struct termios old_term_params;
117 /* Maintain lines in a doubly linked circular pool of lines. Each line is
118 preceded by a header defined by the lstr structure */
121 struct lstr { /* line pool structure */
122 struct lstr *prevl; /* link to previous line */
123 struct lstr *nextl; /* link to next line */
124 long len; /* length of line+header */
125 char used; /* set if line valid */
126 char line; /* line is actually varying length */
130 #define POOLEN 128000 /* bytes in line pool */
132 #define POOLEN 500 /* bytes in line pool */
134 char pool[POOLEN]; /* line pool */
135 #define PHDRL ((int)sizeof(struct lstr)) /* length of line header */
137 static struct lstr *lptr; /* current line pointer */
138 static struct lstr *slptr; /* store line pointer */
140 static char *getnext(), *getprev();
141 static int first = 1;
142 static int mode_insert = 0;
143 static int mode_wspace = 1; /* words separated by spaces */
146 static short char_map[600]= {
147 0, F_SOL, /* ^a Line start */
148 F_PRVWRD, /* ^b Previous word */ F_BREAK, /* ^C break */
149 F_DELCHR, /* ^D Delete character */ F_EOL, /* ^e End of line */
150 F_CSRRGT, /* ^f Right */ F_TABBAK, /* ^G Back tab */
151 F_CSRLFT, /* ^H Left */ F_TAB, /* ^I Tab */
152 F_CSRDWN, /* ^J Down */ F_DELEOL, /* ^K kill to eol */
153 F_CLRSCRN,/* ^L clear screen */ F_RETURN, /* ^M Carriage return */
154 F_RETURN, /* ^N enter line */ F_CONCAT, /* ^O Concatenate lines */
155 F_CSRUP, /* ^P cursor up */ F_TINS, /* ^Q Insert character mode */
156 F_PAGUP, /* ^R Page up */ F_CENTER, /* ^S Center text */
157 F_PAGDWN, /* ^T Page down */ F_DELSOL, /* ^U delete to start of line */
158 F_DELWRD, /* ^V Delete word */ F_PRVWRD, /* ^W Previous word */
159 F_NXTMCH, /* ^X Next match */ F_DELEOL, /* ^Y Delete to end of line */
160 F_BACKGND,/* ^Z Background */ 0x1B, /* ^[=ESC escape */
161 F_TENTRY, /* ^\ Entry mode */ F_PASTECB,/* ^]=paste clipboard */
162 F_HOME, /* ^^ Home */ F_ERSLIN, /* ^_ Erase line */
164 ' ','!','"','#','$','%','&','\047',
165 '(',')','*','+','\054','-','.','/',
166 '0','1','2','3','4','5','6','7',
167 '8','9',':',';','<','=','>','?',
168 '@','A','B','C','D','E','F','G',
169 'H','I','J','K','L','M','N','O',
170 'P','Q','R','S','T','U','V','W',
171 'X','Y','Z','[','\\',']','^','_',
172 '\140','a','b','c','d','e','f','g',
173 'h','i','j','k','l','m','n','o',
174 'p','q','r','s','t','u','v','w',
175 'x','y','z','{','|','}','\176',F_ERSCHR /* erase character */
180 #define NVID 0x1E /* normal video -- blue */
181 #define RVID 0x4F /* reverse video -- red */
182 #define MNVID 0x07 /* normal video (monochrome tube) */
183 #define MRVID 0x70 /* reverse video (monochrome tube) */
186 /* Local variables */
188 #define CR '\r' /* carriage return */
191 /* Function Prototypes */
193 static int input_char(void);
194 static int t_gnc(void);
195 static void insert_space(char *curline, int line_len);
196 static void forward(int i, char *str, int str_len);
197 static void backup(int i);
198 static void delchr(int cnt, char *curline, int line_len);
199 static int iswordc(char c);
200 static int next_word(char *ldb_buf);
201 static int prev_word(char *ldb_buf);
202 static void prtcur(char *str);
203 static void poolinit(void);
204 static char * getnext(void);
205 static char * getprev(void);
206 static void putline(char *newl, int newlen);
207 static void t_honk_horn(void);
208 static void t_insert_line(void);
209 static void t_delete_line(void);
210 static void t_clrline(int pos, int width);
211 void t_sendl(char *msg, int len);
212 void t_send(char *msg);
214 static void asclrs();
215 static void ascurs(int y, int x);
217 static void rawmode(FILE *input);
218 static void normode(void);
219 static int t_getch();
220 static void asclrl(int pos, int width);
221 static void asinsl();
222 static void asdell();
224 int input_line(char *string, int length);
228 void con_init(FILE *input)
238 void con_set_zed_keys(void)
240 char_map[1] = F_NXTWRD; /* ^A Next Word */
241 char_map[2] = F_SPLIT; /* ^B Split line */
242 char_map[3] = F_EOI; /* ^C Quit */
243 char_map[4] = F_DELCHR; /* ^D Delete character */
244 char_map[5] = F_EOF; /* ^E End of file */
245 char_map[6] = F_INSCHR; /* ^F Insert character */
246 char_map[7] = F_TABBAK; /* ^G Back tab */
247 char_map[8] = F_CSRLFT; /* ^H Left */
248 char_map[9] = F_TAB; /* ^I Tab */
249 char_map[10] = F_CSRDWN; /* ^J Down */
250 char_map[11] = F_CSRUP; /* ^K Up */
251 char_map[12] = F_CSRRGT; /* ^L Right */
252 char_map[13] = F_RETURN; /* ^M Carriage return */
253 char_map[14] = F_EOL; /* ^N End of line */
254 char_map[15] = F_CONCAT; /* ^O Concatenate lines */
255 char_map[16] = F_MARK; /* ^P Set marker */
256 char_map[17] = F_TINS; /* ^Q Insert character mode */
257 char_map[18] = F_PAGUP; /* ^R Page up */
258 char_map[19] = F_CENTER; /* ^S Center text */
259 char_map[20] = F_PAGDWN; /* ^T Page down */
260 char_map[21] = F_SOL; /* ^U Line start */
261 char_map[22] = F_DELWRD; /* ^V Delete word */
262 char_map[23] = F_PRVWRD; /* ^W Previous word */
263 char_map[24] = F_NXTMCH; /* ^X Next match */
264 char_map[25] = F_DELEOL; /* ^Y Delete to end of line */
265 char_map[26] = F_DELLIN; /* ^Z Delete line */
267 char_map[28] = F_TENTRY; /* ^\ Entry mode */
268 char_map[29] = F_PASTECB;/* ^]=paste clipboard */
269 char_map[30] = F_HOME; /* ^^ Home */
270 char_map[31] = F_ERSLIN; /* ^_ Erase line */
281 * Guarantee that the string is properly terminated */
282 char *bstrncpy(char *dest, const char *src, int maxlen)
284 strncpy(dest, src, maxlen-1);
292 * New style string mapping to function code
294 static int do_smap(int c)
313 for (i=len-1; i<MAX_STAB; i++) {
314 for (tstab=stab[i]; tstab; tstab=tstab->next) {
315 if (strncmp(str, tstab->str, len) == 0) {
316 if (len == tstab->len) {
320 break; /* found possibility continue searching */
327 /* found partial match, so get next character and retry */
328 str[len++] = t_gnc();
334 static void dump_stab()
340 for (i=0; i<MAX_STAB; i++) {
341 for (tstab=stab[i]; tstab; tstab=tstab->next) {
342 for (j=0; j<tstab->len; j++) {
344 if (c < 0x20 || c > 0x7F) {
345 sprintf(buf, " 0x%x ", c);
353 sprintf(buf, " func=%d len=%d\n\r", tstab->func, tstab->len);
361 * New routine. Add string to string->func mapping table.
363 static void add_smap(char *str, int func)
373 /* errmsg("String for func %d is zero length\n", func); */
376 tstab = (stab_t *)malloc(sizeof(stab_t));
377 memset(tstab, 0, sizeof(stab_t));
379 tstab->str = (char *)malloc(tstab->len + 1);
380 bstrncpy(tstab->str, str, tstab->len + 1);
382 if (tstab->len > num_stab) {
383 printf("stab string too long %d. Max is %d\n", tstab->len, num_stab);
386 tstab->next = stab[tstab->len-1];
387 stab[tstab->len-1] = tstab;
388 /* printf("Add_smap tstab=%x len=%d func=%d tstab->next=%x\n\r", tstab, len,
389 func, tstab->next); */
394 /* Get the next character from the terminal - performs table lookup on
395 the character to do the desired translation */
401 if ((c=t_gnc()) <= 599) { /* IBM generates codes up to 260 */
403 } else if (c > 1000) { /* stuffed function */
404 c -= 1000; /* convert back to function code */
409 /* if we got a screen size escape sequence, read height, width */
412 y = t_gnc() - 0x20; /* y */
413 x = t_gnc() - 0x20; /* x */
420 /* Get a complete input line */
423 input_line(char *string, int length)
425 char curline[200]; /* edit buffer */
430 poolinit(); /* build line pool */
433 noline = 1; /* no line fetched yet */
434 for (cl=cp=0; cl<length && cl<(int)sizeof(curline); ) {
435 switch (c=(int)input_char()) {
436 case F_RETURN: /* CR */
437 t_sendl("\r\n", 2); /* yes, print it and */
438 goto done; /* get out */
439 case F_CLRSCRN: /* clear screen */
441 t_sendl(curline, cl);
445 if (noline) { /* no line fetched yet */
446 getnext(); /* getnext so getprev gets current */
447 noline = 0; /* we now have line */
449 bstrncpy(curline, getprev(), sizeof(curline));
453 noline = 0; /* mark line fetched */
454 bstrncpy(curline, getnext(), sizeof(curline));
458 insert_space(curline, sizeof(curline));
461 delchr(1, curline, sizeof(curline)); /* delete one character */
463 case F_CSRLFT: /* Backspace */
467 forward(1,curline, sizeof(curline));
469 case F_ERSCHR: /* Rubout */
471 delchr(1, curline, sizeof(curline));
474 t_clrline(0, t_width);
479 forward(next_word(curline),curline, sizeof(curline));
482 backup(prev_word(curline));
485 delchr(next_word(curline), curline, sizeof(curline)); /* delete word */
487 case F_NXTMCH: /* Ctl-X */
489 *string = EOS; /* terminate string */
490 return(c); /* give it to him */
492 /* Note fall through */
495 backup(cp); /* backup to beginning of line */
496 t_clrline(0,t_width); /* erase line */
498 cl = 0; /* reset cursor counter */
505 forward(1,curline, sizeof(curline));
511 case F_TINS: /* toggle insert mode */
512 mode_insert = !mode_insert; /* flip bit */
515 if (c > 255) { /* function key hit */
516 if (cl==0) { /* if first character then */
517 *string = EOS; /* terminate string */
518 return c; /* return it */
520 t_honk_horn(); /* complain */
523 insert_space(curline, sizeof(curline));
525 curline[cp++] = c; /* store character in line being built */
526 t_char((char)c); /* echo character to terminal */
528 cl = cp; /* keep current length */
534 /* If we fall through here rather than goto done, the line is too long
535 simply return what we have now. */
537 curline[cl++] = EOS; /* terminate */
538 bstrncpy(string,curline,length); /* return line to caller */
539 /* Note, put line zaps curline */
540 putline(curline,cl); /* save line for posterity */
541 return 0; /* give it to him/her */
544 /* Insert a space at the current cursor position */
546 insert_space(char *curline, int curline_len)
550 if (cp > cl || cl+1 > curline_len) return;
551 /* Note! source and destination overlap */
552 memmove(&curline[cp+1],&curline[cp],i=cl-cp);
556 forward(i,curline, curline_len);
561 /* Move cursor forward keeping characters under it */
563 forward(int i,char *str, int str_len)
579 /* Backup cursor keeping characters under it */
583 for ( ;i && cp; i--,cp--)
587 /* Delete the character under the cursor */
589 delchr(int cnt, char *curline, int line_len)
595 if ((i=cl-cp-cnt+1) > 0) {
596 memcpy(&curline[cp],&curline[cp+cnt],i);
598 curline[cl -= cnt] = EOS;
599 t_clrline(0,t_width);
601 forward(i=cl-cp,curline, line_len);
606 /* Determine if character is part of a word */
612 if (c >= '0' && c <= '9')
614 if (c == '$' || c == '%')
619 /* Return number of characters to get to next word */
621 next_word(char *ldb_buf)
628 for ( ; ncp<cl && iswordc(*(ldb_buf+ncp)); ncp++) ;
629 for ( ; ncp<cl && !iswordc(*(ldb_buf+ncp)); ncp++) ;
633 /* Return number of characters to get to previous word */
635 prev_word(char *ldb_buf)
639 if (cp == 0) /* if at begin of line stop now */
641 if (cp > cl) /* if past eol start at eol */
645 /* backup to end of previous word - i.e. skip special chars */
646 for (i=ncp-1; i && !iswordc(*(ldb_buf+i)); i--) ;
647 if (i == 0) { /* at beginning of line? */
648 return cp; /* backup to beginning */
650 /* now move back through word to beginning of word */
651 for ( ; i && iswordc(*(ldb_buf+i)); i--) ;
652 ncp = i+1; /* position to first char of word */
653 if (i==0 && iswordc(*ldb_buf)) /* check for beginning of line */
655 return cp-ncp; /* return count */
658 /* Display new current line */
663 t_clrline(0,t_width);
664 cp = cl = strlen(str);
669 /* Initialize line pool. Split pool into two pieces. */
673 slptr = lptr = (struct lstr *)pool;
682 /* Return pointer to next line in the pool and advance current line pointer */
686 do { /* find next used line */
688 } while (!lptr->used);
689 return (char *)&lptr->line;
692 /* Return pointer to previous line in the pool */
696 do { /* find previous used line */
698 } while (!lptr->used);
699 return (char *)&lptr->line;
703 putline(char *newl, int newlen)
705 struct lstr *nptr; /* points to next line */
708 lptr = slptr; /* get ptr to last line stored */
709 lptr = lptr->nextl; /* advance pointer */
710 if ((char *)lptr-pool+newlen+PHDRL > POOLEN) { /* not enough room */
711 lptr->used = 0; /* delete line */
712 lptr = (struct lstr *)pool; /* start at beginning of buffer */
714 while (lptr->len < newlen+PHDRL) { /* concatenate buffers */
715 nptr = lptr->nextl; /* point to next line */
716 lptr->nextl = nptr->nextl; /* unlink it from list */
717 nptr->nextl->prevl = lptr;
718 lptr->len += nptr->len;
720 if (lptr->len > newlen + 2 * PHDRL) { /* split buffer */
721 nptr = (struct lstr *)((char *)lptr + newlen + PHDRL);
722 /* Appropriate byte alignment - normally 2 byte, but on
723 sparc we need 4 byte alignment, so we always do 4 */
724 if (((unsigned)nptr & 3) != 0) { /* test four byte alignment */
726 nptr = (struct lstr *)((((unsigned) p) & ~3) + 4);
728 nptr->len = lptr->len - ((char *)nptr - (char *)lptr);
729 lptr->len -= nptr->len;
730 nptr->nextl = lptr->nextl; /* link in new buffer */
731 lptr->nextl->prevl = nptr;
736 memcpy(&lptr->line,newl,newlen);
737 lptr->used = 1; /* mark line used */
738 slptr = lptr; /* save as stored line */
743 dump(struct lstr *ptr, char *msg)
745 printf("%s buf=%x nextl=%x prevl=%x len=%d used=%d\n",
746 msg,ptr,ptr->nextl,ptr->prevl,ptr->len,ptr->used);
748 printf("line=%s\n",&ptr->line);
750 #endif /* DEBUGOUT */
753 /* Honk horn on terminal */
760 /* Insert line on terminal */
767 /* Delete line from terminal */
774 /* clear line from pos to width */
776 t_clrline(int pos, int width)
778 asclrl(pos, width); /* clear to end of line */
781 /* Helper function to add string preceded by
782 * ESC to smap table */
783 static void add_esc_smap(char *str, int func)
786 buf[0] = 0x1B; /* esc */
787 bstrncpy(buf+1, str, sizeof(buf)-1);
791 /* Set raw mode on terminal file. Basically, get the terminal into a
792 mode in which all characters can be read as they are entered. CBREAK
793 mode is not sufficient.
795 static void rawmode(FILE *input)
798 static char term_buf[2048];
799 static char *term_buffer = term_buf;
800 char *termtype = (char *)getenv("TERM");
802 /* Make sure we are dealing with a terminal */
803 if (!isatty(fileno(input))) {
806 if (tcgetattr(0, &old_term_params) != 0) {
807 printf("conio: Cannot tcgetattr()\n");
810 old_term_params_set = true;
812 t.c_cc[VMIN] = 1; /* satisfy read after 1 char */
814 t.c_iflag &= ~(BRKINT | IGNPAR | PARMRK | INPCK |
815 ISTRIP | ICRNL | IXON | IXOFF | INLCR | IGNCR);
818 t.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL | ICANON |
820 tcflush(0, TCIFLUSH);
821 if (tcsetattr(0, TCSANOW, &t) == -1) {
822 printf("Cannot tcsetattr()\n");
825 /* Defaults, the main program can override these */
826 signal(SIGQUIT, SIG_IGN);
827 signal(SIGHUP, SIG_IGN);
828 // signal(SIGSTOP, SIG_IGN);
829 signal(SIGINT, sigintcatcher);
830 signal(SIGWINCH, SIG_IGN);
831 signal(SIGQUIT, SIG_IGN);
832 signal(SIGCHLD, SIG_IGN);
833 // signal(SIGTSTP, SIG_IGN);
836 printf("Cannot get terminal type.\n");
840 if (tgetent(term_buffer, termtype) < 0) {
841 printf("Cannot get terminal termcap entry.\n");
845 t_width = t_height = -1;
846 t_width = tgetnum("co") - 1;
847 t_height = tgetnum("li");
850 t_cm = (char *)tgetstr("cm", &term_buffer);
851 t_cs = (char *)tgetstr("cl", &term_buffer); /* clear screen */
852 t_cl = (char *)tgetstr("ce", &term_buffer); /* clear line */
853 t_dl = (char *)tgetstr("dl", &term_buffer); /* delete line */
854 t_il = (char *)tgetstr("al", &term_buffer); /* insert line */
855 t_honk = (char *)tgetstr("bl", &term_buffer); /* beep */
856 t_ti = (char *)tgetstr("ti", &term_buffer);
857 t_te = (char *)tgetstr("te", &term_buffer);
858 t_up = (char *)tgetstr("up", &term_buffer);
859 t_do = (char *)tgetstr("do", &term_buffer);
860 t_sf = (char *)tgetstr("sf", &term_buffer);
862 num_stab = MAX_STAB; /* get default stab size */
863 stab = (stab_t **)malloc(sizeof(stab_t *) * num_stab);
864 memset(stab, 0, sizeof(stab_t *) * num_stab);
867 kl = (char *)tgetstr("kl", &term_buffer);
868 kr = (char *)tgetstr("kr", &term_buffer);
869 ku = (char *)tgetstr("ku", &term_buffer);
870 kd = (char *)tgetstr("kd", &term_buffer);
871 kh = (char *)tgetstr("kh", &term_buffer);
872 kb = (char *)tgetstr("kb", &term_buffer);
873 kD = (char *)tgetstr("kD", &term_buffer);
874 kI = (char *)tgetstr("kI", &term_buffer);
875 kN = (char *)tgetstr("kN", &term_buffer);
876 kP = (char *)tgetstr("kP", &term_buffer);
877 kH = (char *)tgetstr("kH", &term_buffer);
878 kE = (char *)tgetstr("kE", &term_buffer);
880 add_smap(kl, F_CSRLFT);
881 add_smap(kr, F_CSRRGT);
882 add_smap(ku, F_CSRUP);
883 add_smap(kd, F_CSRDWN);
884 add_smap(kI, F_TINS);
885 add_smap(kN, F_PAGDWN);
886 add_smap(kP, F_PAGUP);
887 add_smap(kH, F_HOME);
891 add_esc_smap("[A", F_CSRUP);
892 add_esc_smap("[B", F_CSRDWN);
893 add_esc_smap("[C", F_CSRRGT);
894 add_esc_smap("[D", F_CSRLFT);
895 add_esc_smap("[1~", F_HOME);
896 add_esc_smap("[2~", F_TINS);
897 add_esc_smap("[3~", F_DELCHR);
898 add_esc_smap("[4~", F_EOF);
899 add_esc_smap("f", F_NXTWRD);
900 add_esc_smap("b", F_PRVWRD);
904 for (i=301; i<600; i++) {
905 char_map[i] = i; /* setup IBM function codes */
911 /* Restore tty mode */
912 static void normode()
914 if (old_term_params_set) {
915 tcsetattr(0, TCSANOW, &old_term_params);
916 old_term_params_set = false;
920 /* Get next character from terminal/script file/unget buffer */
928 /* Get next character from OS */
929 static int t_getch(void)
933 if (read(0, &c, 1) != 1) {
941 /* window_size -- Return window height and width to caller. */
942 static int window_size(int *height, int *width) /* /window_size/ */
944 *width = tgetnum("co") - 1;
945 *height = tgetnum("li");
950 /* Send message to terminal - primitive routine */
952 t_sendl(char *msg,int len)
963 t_sendl(msg, strlen(msg)); /* faster than one char at time */
966 /* Send single character to terminal - primitive routine - */
974 static int brkflg = 0; /* set on user break */
976 /* Routine to return true if user types break */
982 /* Clear break flag */
989 /* Interrupt caught here */
990 static void sigintcatcher(int sig)
997 signal(SIGINT, sigintcatcher);
1004 signal(SIGINT, sigintcatcher);
1008 /* ASCLRL() -- Clear to end of line from current position */
1009 static void asclrl(int pos, int width)
1014 t_send(t_cl); /* use clear to eol function */
1017 if (pos==1 && linsdel_ok) {
1018 t_delete_line(); /* delete line */
1019 t_insert_line(); /* reinsert it */
1022 for (i=1; i<=width-pos+1; i++)
1023 t_char(' '); /* last resort, blank it out */
1024 for (i=1; i<=width-pos+1; i++) /* backspace to original position */
1031 /* ASCURS -- Set cursor position */
1032 static void ascurs(int y, int x)
1034 t_send((char *)tgoto(t_cm, x, y));
1038 /* ASCLRS -- Clear whole screen */
1039 static void asclrs()
1047 /* ASINSL -- insert new line after cursor */
1048 static void asinsl()
1050 t_clrline(0, t_width);
1051 t_send(t_il); /* insert before */
1054 /* ASDELL -- Delete line at cursor */
1055 static void asdell()