MicroEmacs (5 of 7)
Curt Jutzi
jutz at pogo.UUCP
Fri Mar 21 03:16:02 AEST 1986
*** REPLACE THIS LINE WITH YOUR MESSAGE ***
return(TRUE);
}
if (! tabsize)
return(linsert(1, '\t'));
return(linsert(tabsize - (getccol(FALSE) % tabsize), ' '));
}
/*
* Open up some blank space. The basic plan is to insert a bunch of newlines,
* and then back up over them. Everything is done by the subcommand
* procerssors. They even handle the looping. Normally this is bound to "C-O".
*/
openline(f, n)
{
register int i;
register int s;
if (n < 0)
return (FALSE);
if (n == 0)
return (TRUE);
i = n; /* Insert newlines. */
do {
s = lnewline();
} while (s==TRUE && --i);
if (s == TRUE) /* Then back up overtop */
s = backchar(f, n); /* of them all. */
return (s);
}
/*
* Insert a newline. Bound to "C-M". If you are at the end of the line and the
* next line is a blank line, just move into the blank line. This makes "C-O"
* and "C-X C-O" work nicely, and reduces the ammount of screen update that
* has to be done. This would not be as critical if screen update were a lot
* more efficient.
*/
newline(f, n)
{
int nicol;
register LINE *lp;
register int s;
if (n < 0)
return (FALSE);
while (n--) {
lp = curwp->w_dotp;
if (llength(lp) == curwp->w_doto
&& lp != curbp->b_linep
&& llength(lforw(lp)) == 0) {
if ((s=forwchar(FALSE, 1)) != TRUE)
return (s);
} else if ((s=lnewline()) != TRUE)
return (s);
}
return (TRUE);
}
/*
* Delete blank lines around dot. What this command does depends if dot is
* sitting on a blank line. If dot is sitting on a blank line, this command
* deletes all the blank lines above and below the current line. If it is
* sitting on a non blank line then it deletes all of the blank lines after
* the line. Normally this command is bound to "C-X C-O". Any argument is
* ignored.
*/
deblank(f, n)
{
register LINE *lp1;
register LINE *lp2;
register int nld;
lp1 = curwp->w_dotp;
while (llength(lp1)==0 && (lp2=lback(lp1))!=curbp->b_linep)
lp1 = lp2;
lp2 = lp1;
nld = 0;
while ((lp2=lforw(lp2))!=curbp->b_linep && llength(lp2)==0)
++nld;
if (nld == 0)
return (TRUE);
curwp->w_dotp = lforw(lp1);
curwp->w_doto = 0;
return (ldelete(nld));
}
/*
* Insert a newline, then enough tabs and spaces to duplicate the indentation
* of the previous line. Assumes tabs are every eight characters. Quite simple.
* Figure out the indentation of the current line. Insert a newline by calling
* the standard routine. Insert the indentation by inserting the right number
* of tabs and spaces. Return TRUE if all ok. Return FALSE if one of the
* subcomands failed. Normally bound to "C-J".
*/
indent(f, n)
{
register int nicol;
register int c;
register int i;
if (n < 0)
return (FALSE);
while (n--) {
nicol = 0;
for (i=0; i<llength(curwp->w_dotp); ++i) {
c = lgetc(curwp->w_dotp, i);
if (c!=' ' && c!='\t')
break;
if (c == '\t')
nicol |= 0x07;
++nicol;
}
if (lnewline() == FALSE
|| ((i=nicol/8)!=0 && linsert(i, '\t')==FALSE)
|| ((i=nicol%8)!=0 && linsert(i, ' ')==FALSE))
return (FALSE);
}
return (TRUE);
}
/*
* Delete forward. This is real easy, because the basic delete routine does
* all of the work. Watches for negative arguments, and does the right thing.
* If any argument is present, it kills rather than deletes, to prevent loss
* of text if typed with a big argument. Normally bound to "C-D".
*/
forwdel(f, n)
{
if (n < 0)
return (backdel(f, -n));
if (f != FALSE) { /* Really a kill. */
if ((lastflag&CFKILL) == 0)
kdelete();
thisflag |= CFKILL;
}
return (ldelete(n, f));
}
/*
* Delete backwards. This is quite easy too, because it's all done with other
* functions. Just move the cursor back, and delete forwards. Like delete
* forward, this actually does a kill if presented with an argument. Bound to
* both "RUBOUT" and "C-H".
*/
backdel(f, n)
{
register int s;
if (n < 0)
return (forwdel(f, -n));
if (f != FALSE) { /* Really a kill. */
if ((lastflag&CFKILL) == 0)
kdelete();
thisflag |= CFKILL;
}
if ((s=backchar(f, n)) == TRUE)
s = ldelete(n, f);
return (s);
}
/*
* Kill text. If called without an argument, it kills from dot to the end of
* the line, unless it is at the end of the line, when it kills the newline.
* If called with an argument of 0, it kills from the start of the line to dot.
* If called with a positive argument, it kills from dot forward over that
* number of newlines. If called with a negative argument it kills backwards
* that number of newlines. Normally bound to "C-K".
*/
kill(f, n)
{
register int chunk;
register LINE *nextp;
if ((lastflag&CFKILL) == 0) /* Clear kill buffer if */
kdelete(); /* last wasn't a kill. */
thisflag |= CFKILL;
if (f == FALSE) {
chunk = llength(curwp->w_dotp)-curwp->w_doto;
if (chunk == 0)
chunk = 1;
} else if (n == 0) {
chunk = curwp->w_doto;
curwp->w_doto = 0;
} else if (n > 0) {
chunk = llength(curwp->w_dotp)-curwp->w_doto+1;
nextp = lforw(curwp->w_dotp);
while (--n) {
if (nextp == curbp->b_linep)
return (FALSE);
chunk += llength(nextp)+1;
nextp = lforw(nextp);
}
} else {
mlwrite("neg kill");
return (FALSE);
}
return (ldelete(chunk, TRUE));
}
/*
* Yank text back from the kill buffer. This is really easy. All of the work
* is done by the standard insert routines. All you do is run the loop, and
* check for errors. Bound to "C-Y". The blank lines are inserted with a call
* to "newline" instead of a call to "lnewline" so that the magic stuff that
* happens when you type a carriage return also happens when a carriage return
* is yanked back from the kill buffer.
*/
yank(f, n)
{
register int c;
register int i;
extern int kused;
if (n < 0)
return (FALSE);
while (n--) {
i = 0;
while ((c=kremove(i)) >= 0) {
if (c == '\n') {
if (newline(FALSE, 1) == FALSE)
return (FALSE);
} else {
if (linsert(1, c) == FALSE)
return (FALSE);
}
++i;
}
}
return (TRUE);
}
/*
*
* SEARCH.C MODULE
*
*/
/*
* The functions in this file implement commands that search in the forward
* and backward directions. There are no special characters in the search
* strings. Probably should have a regular expression search, or something
* like that.
*
* REVISION HISTORY:
*
* ? Steve Wilhite, 1-Dec-85
* - massive cleanup on code.
*/
#include <stdio.h>
#include "ed.h"
/*
* Search forward. Get a search string from the user, and search, beginning at
* ".", for the string. If found, reset the "." to be just after the match
* string, and [perhaps] repaint the display. Bound to "C-S".
*/
forwsearch(f, n)
{
register LINE *clp;
register int cbo;
register LINE*tlp;
register int tbo;
register int c;
register char *pp;
register int s;
if ((s = readpattern("Search")) != TRUE)
return (s);
clp = curwp->w_dotp;
cbo = curwp->w_doto;
while (clp != curbp->b_linep)
{
if (cbo == llength(clp))
{
clp = lforw(clp);
cbo = 0;
c = '\n';
}
else
c = lgetc(clp, cbo++);
if (eq(c, pat[0]) != FALSE)
{
tlp = clp;
tbo = cbo;
pp = &pat[1];
while (*pp != 0)
{
if (tlp == curbp->b_linep)
goto fail;
if (tbo == llength(tlp))
{
tlp = lforw(tlp);
tbo = 0;
c = '\n';
}
else
c = lgetc(tlp, tbo++);
if (eq(c, *pp++) == FALSE)
goto fail;
}
curwp->w_dotp = tlp;
curwp->w_doto = tbo;
curwp->w_flag |= WFMOVE;
return (TRUE);
}
fail:;
}
mlwrite("Not found");
return (FALSE);
}
/*
* Reverse search. Get a search string from the user, and search, starting at
* "." and proceeding toward the front of the buffer. If found "." is left
* pointing at the first character of the pattern [the last character that was
j matched]. Bound to "C-R".
*/
backsearch(f, n)
{
register LINE *clp;
register int cbo;
register LINE *tlp;
register int tbo;
register int c;
register char *epp;
register char *pp;
register int s;
if ((s = readpattern("Reverse search")) != TRUE)
return (s);
for (epp = &pat[0]; epp[1] != 0; ++epp)
;
clp = curwp->w_dotp;
cbo = curwp->w_doto;
for (;;)
{
if (cbo == 0)
{
clp = lback(clp);
if (clp == curbp->b_linep)
{
mlwrite("Not found");
return (FALSE);
}
cbo = llength(clp)+1;
}
if (--cbo == llength(clp))
c = '\n';
else
c = lgetc(clp, cbo);
if (eq(c, *epp) != FALSE)
{
tlp = clp;
tbo = cbo;
pp = epp;
while (pp != &pat[0])
{
if (tbo == 0)
{
tlp = lback(tlp);
if (tlp == curbp->b_linep)
goto fail;
tbo = llength(tlp)+1;
}
if (--tbo == llength(tlp))
c = '\n';
else
c = lgetc(tlp, tbo);
if (eq(c, *--pp) == FALSE)
goto fail;
}
curwp->w_dotp = tlp;
curwp->w_doto = tbo;
curwp->w_flag |= WFMOVE;
return (TRUE);
}
fail:;
}
}
/*
* Compare two characters. The "bc" comes from the buffer. It has it's case
* folded out. The "pc" is from the pattern.
*/
eq(bc, pc)
int bc;
int pc;
{
/*
if (bc>='a' && bc<='z')
bc -= 0x20;
if (pc>='a' && pc<='z')
pc -= 0x20;
*/
if (bc == pc)
return (TRUE);
return (FALSE);
}
/*
* Read a pattern. Stash it in the external variable "pat". The "pat" is not
* updated if the user types in an empty line. If the user typed an empty line,
* and there is no old pattern, it is an error. Display the old pattern, in the
* style of Jeff Lomicka. There is some do-it-yourself control expansion.
*/
readpattern(prompt)
char *prompt;
{
register char *cp1;
register char *cp2;
register int c;
register int s;
char tpat[NPAT+20];
cp1 = &tpat[0]; /* Copy prompt */
cp2 = prompt;
while ((c = *cp2++) != '\0')
*cp1++ = c;
if (pat[0] != '\0') /* Old pattern */
{
*cp1++ = ' ';
*cp1++ = '[';
cp2 = &pat[0];
while ((c = *cp2++) != 0)
{
if (cp1 < &tpat[NPAT+20-6]) /* "??]: \0" */
{
if (c<0x20 || c==0x7F) {
*cp1++ = '^';
c ^= 0x40;
}
else if (c == '%') /* Map "%" to */
*cp1++ = c; /* "%%". */
*cp1++ = c;
}
}
*cp1++ = ']';
}
*cp1++ = ':'; /* Finish prompt */
*cp1++ = ' ';
*cp1++ = '\0';
s = mlreply(tpat, tpat, NPAT); /* Read pattern */
if (s == TRUE) /* Specified */
strcpy(pat, tpat);
else if (s == FALSE && pat[0] != 0) /* CR, but old one */
s = TRUE;
return (s);
}
/*
*
* WINDOW.C MODULE
*
*/
/*
* Window management. Some of the functions are internal, and some are
* attached to keys that the user actually types.
*/
#include <stdio.h>
#include "ed.h"
/*
* Reposition dot in the current window to line "n". If the argument is
* positive, it is that line. If it is negative it is that line from the
* bottom. If it is 0 the window is centered (this is what the standard
* redisplay code does). With no argument it defaults to 1. Bound to M-!.
* Because of the default, it works like in Gosling.
*/
reposition(f, n)
{
curwp->w_force = n;
curwp->w_flag |= WFFORCE;
return (TRUE);
}
/*
* Refresh the screen. With no argument, it just does the refresh. With an
* argument it recenters "." in the current window. Bound to "C-L".
*/
refresh(f, n)
{
if (f == FALSE)
sgarbf = TRUE;
else
{
curwp->w_force = 0; /* Center dot. */
curwp->w_flag |= WFFORCE;
}
return (TRUE);
}
/*
* The command make the next window (next => down the screen) the current
* window. There are no real errors, although the command does nothing if
* there is only 1 window on the screen. Bound to "C-X C-N".
*/
nextwind(f, n)
{
register WINDOW *wp;
if ((wp = curwp->w_wndp) == NULL) {
wp = wheadp;
}
curwp = wp;
curbp = wp->w_bufp;
if (wheadp->w_wndp == NULL) /* cej if no other windows */
return (FALSE); /* return false */
else
return (TRUE);
}
/*
* This command makes the previous window (previous => up the screen) the
* current window. There arn't any errors, although the command does not do a
* lot if there is 1 window.
*/
prevwind(f, n)
{
register WINDOW *wp1;
register WINDOW *wp2;
wp1 = wheadp;
wp2 = curwp;
if (wp1 == wp2)
wp2 = NULL;
while (wp1->w_wndp != wp2)
wp1 = wp1->w_wndp;
curwp = wp1;
curbp = wp1->w_bufp;
return (TRUE);
}
/*
* This command moves the current window down by "arg" lines. Recompute the
* top line in the window. The move up and move down code is almost completely
* the same; most of the work has to do with reframing the window, and picking
* a new dot. We share the code by having "move down" just be an interface to
* "move up". Magic. Bound to "C-X C-N".
*/
mvdnwind(f, n)
int n;
{
return (mvupwind(f, -n));
}
/*
* Move the current window up by "arg" lines. Recompute the new top line of
* the window. Look to see if "." is still on the screen. If it is, you win.
* If it isn't, then move "." to center it in the new framing of the window
* (this command does not really move "."; it moves the frame). Bound to
* "C-X C-P".
*/
mvupwind(f, n)
int n;
{
register LINE *lp;
register int i;
lp = curwp->w_linep;
if (n < 0)
{
while (n++ && lp!=curbp->b_linep)
lp = lforw(lp);
}
else
{
while (n-- && lback(lp)!=curbp->b_linep)
lp = lback(lp);
}
curwp->w_linep = lp;
curwp->w_flag |= WFHARD; /* Mode line is OK. */
for (i = 0; i < curwp->w_ntrows; ++i)
{
if (lp == curwp->w_dotp)
return (TRUE);
if (lp == curbp->b_linep)
break;
lp = lforw(lp);
}
lp = curwp->w_linep;
i = curwp->w_ntrows/2;
while (i-- && lp != curbp->b_linep)
lp = lforw(lp);
curwp->w_dotp = lp;
curwp->w_doto = 0;
return (TRUE);
}
/*
* This command makes the current window the only window on the screen. Bound
* to "C-X 1". Try to set the framing so that "." does not have to move on the
* display. Some care has to be taken to keep the values of dot and mark in
* the buffer structures right if the distruction of a window makes a buffer
* become undisplayed.
*/
onlywind(f, n)
{
register WINDOW *wp;
register LINE *lp;
register int i;
while (wheadp != curwp) {
wp = wheadp;
wheadp = wp->w_wndp;
if (--wp->w_bufp->b_nwnd == 0) {
wp->w_bufp->b_dotp = wp->w_dotp;
wp->w_bufp->b_doto = wp->w_doto;
wp->w_bufp->b_markp = wp->w_markp;
wp->w_bufp->b_marko = wp->w_marko;
}
free((char *) wp);
}
while (curwp->w_wndp != NULL) {
wp = curwp->w_wndp;
curwp->w_wndp = wp->w_wndp;
if (--wp->w_bufp->b_nwnd == 0) {
wp->w_bufp->b_dotp = wp->w_dotp;
wp->w_bufp->b_doto = wp->w_doto;
wp->w_bufp->b_markp = wp->w_markp;
wp->w_bufp->b_marko = wp->w_marko;
}
free((char *) wp);
}
lp = curwp->w_linep;
i = curwp->w_toprow;
while (i!=0 && lback(lp)!=curbp->b_linep) {
--i;
lp = lback(lp);
}
curwp->w_toprow = 0;
curwp->w_ntrows = term.t_nrow-1;
curwp->w_linep = lp;
curwp->w_flag |= WFMODE|WFHARD;
return (TRUE);
}
/*
* Split the current window. A window smaller than 3 lines cannot be split.
* The only other error that is possible is a "malloc" failure allocating the
* structure for the new window. Bound to "C-X 2".
*/
splitwind(f, n)
{
register WINDOW *wp;
register LINE *lp;
register int ntru;
register int ntrl;
register int ntrd;
register WINDOW *wp1;
register WINDOW *wp2;
if (curwp->w_ntrows < 3) {
mlwrite("Cannot split a %d line window", curwp->w_ntrows);
return (FALSE);
}
if ((wp = (WINDOW *) malloc(sizeof(WINDOW))) == NULL) {
mlwrite("Cannot allocate WINDOW block");
return (FALSE);
}
++curbp->b_nwnd; /* Displayed twice. */
wp->w_bufp = curbp;
wp->w_dotp = curwp->w_dotp;
wp->w_doto = curwp->w_doto;
wp->w_markp = curwp->w_markp;
wp->w_marko = curwp->w_marko;
wp->w_flag = 0;
wp->w_force = 0;
ntru = (curwp->w_ntrows-1) / 2; /* Upper size */
ntrl = (curwp->w_ntrows-1) - ntru; /* Lower size */
lp = curwp->w_linep;
ntrd = 0;
while (lp != curwp->w_dotp) {
++ntrd;
lp = lforw(lp);
}
lp = curwp->w_linep;
if (ntrd <= ntru) { /* Old is upper window. */
if (ntrd == ntru) /* Hit mode line. */
lp = lforw(lp);
curwp->w_ntrows = ntru;
wp->w_wndp = curwp->w_wndp;
curwp->w_wndp = wp;
wp->w_toprow = curwp->w_toprow+ntru+1;
wp->w_ntrows = ntrl;
} else { /* Old is lower window */
wp1 = NULL;
wp2 = wheadp;
while (wp2 != curwp) {
wp1 = wp2;
wp2 = wp2->w_wndp;
}
if (wp1 == NULL)
wheadp = wp;
else
wp1->w_wndp = wp;
wp->w_wndp = curwp;
wp->w_toprow = curwp->w_toprow;
wp->w_ntrows = ntru;
++ntru; /* Mode line. */
curwp->w_toprow += ntru;
curwp->w_ntrows = ntrl;
while (ntru--)
lp = lforw(lp);
}
curwp->w_linep = lp; /* Adjust the top lines */
wp->w_linep = lp; /* if necessary. */
curwp->w_flag |= WFMODE|WFHARD;
wp->w_flag |= WFMODE|WFHARD;
return (TRUE);
}
/*
* Enlarge the current window. Find the window that loses space. Make sure it
* is big enough. If so, hack the window descriptions, and ask redisplay to do
* all the hard work. You don't just set "force reframe" because dot would
* move. Bound to "C-X Z".
*/
enlargewind(f, n)
{
register WINDOW *adjwp;
register LINE *lp;
register int i;
if (n < 0)
return (shrinkwind(f, -n));
if (wheadp->w_wndp == NULL) {
mlwrite("Only one window");
return (FALSE);
}
if ((adjwp=curwp->w_wndp) == NULL) {
adjwp = wheadp;
while (adjwp->w_wndp != curwp)
adjwp = adjwp->w_wndp;
}
if (adjwp->w_ntrows <= n) {
mlwrite("Impossible change");
return (FALSE);
}
if (curwp->w_wndp == adjwp) { /* Shrink below. */
lp = adjwp->w_linep;
for (i=0; i<n && lp!=adjwp->w_bufp->b_linep; ++i)
lp = lforw(lp);
adjwp->w_linep = lp;
adjwp->w_toprow += n;
} else { /* Shrink above. */
lp = curwp->w_linep;
for (i=0; i<n && lback(lp)!=curbp->b_linep; ++i)
lp = lback(lp);
curwp->w_linep = lp;
curwp->w_toprow -= n;
}
curwp->w_ntrows += n;
adjwp->w_ntrows -= n;
curwp->w_flag |= WFMODE|WFHARD;
adjwp->w_flag |= WFMODE|WFHARD;
return (TRUE);
}
/*
* Shrink the current window. Find the window that gains space. Hack at the
* window descriptions. Ask the redisplay to do all the hard work. Bound to
* "C-X C-Z".
*/
shrinkwind(f, n)
{
register WINDOW *adjwp;
register LINE *lp;
register int i;
if (n < 0)
return (enlargewind(f, -n));
if (wheadp->w_wndp == NULL) {
mlwrite("Only one window");
return (FALSE);
}
if ((adjwp=curwp->w_wndp) == NULL) {
adjwp = wheadp;
while (adjwp->w_wndp != curwp)
adjwp = adjwp->w_wndp;
}
if (curwp->w_ntrows <= n) {
mlwrite("Impossible change");
return (FALSE);
}
if (curwp->w_wndp == adjwp) { /* Grow below. */
lp = adjwp->w_linep;
for (i=0; i<n && lback(lp)!=adjwp->w_bufp->b_linep; ++i)
lp = lback(lp);
adjwp->w_linep = lp;
adjwp->w_toprow -= n;
} else { /* Grow above. */
lp = curwp->w_linep;
for (i=0; i<n && lp!=curbp->b_linep; ++i)
lp = lforw(lp);
curwp->w_linep = lp;
curwp->w_toprow += n;
}
curwp->w_ntrows -= n;
adjwp->w_ntrows += n;
curwp->w_flag |= WFMODE|WFHARD;
adjwp->w_flag |= WFMODE|WFHARD;
return (TRUE);
}
/*
* Pick a window for a pop-up. Split the screen if there is only one window.
* Pick the uppermost window that isn't the current window. An LRU algorithm
* might be better. Return a pointer, or NULL on error.
*/
WINDOW *
wpopup()
{
register WINDOW *wp;
if (wheadp->w_wndp == NULL /* Only 1 window */
&& splitwind(FALSE, 0) == FALSE) /* and it won't split */
return (NULL);
wp = wheadp; /* Find window to use */
while (wp!=NULL && wp==curwp)
wp = wp->w_wndp;
return (wp);
}
/*
*
* MAIN.C MODULE
*
*/
/*
* This program is in public domain; written by Dave G. Conroy.
* This file contains the main driving routine, and some keyboard processing
* code, for the MicroEMACS screen editor.
*
* REVISION HISTORY:
*
* 1.0 Steve Wilhite, 30-Nov-85
* - Removed the old LK201 and VT100 logic. Added code to support the
* DEC Rainbow keyboard (which is a LK201 layout) using the the Level
* 1 Console In ROM INT. See "rainbow.h" for the function key definitions.
*
* 2.0 George Jones, 12-Dec-85
* - Ported to Amiga.
*/
#include <stdio.h>
#include "ed.h"
#if VMS
#include <ssdef.h>
#define GOOD (SS$_NORMAL)
#endif
#ifndef GOOD
#define GOOD 0
#endif
int currow; /* Working cursor row */
int curcol; /* Working cursor column */
int fillcol; /* Current fill column */
int thisflag; /* Flags, this command */
int lastflag; /* Flags, last command */
int curgoal; /* Goal column */
BUFFER *curbp; /* Current buffer */
WINDOW *curwp; /* Current window */
BUFFER *bheadp; /* BUFFER listhead */
WINDOW *wheadp; /* WINDOW listhead */
BUFFER *blistp; /* Buffer list BUFFER */
short kbdm[NKBDM] = {CTLX|')'}; /* Macro */
short *kbdmip; /* Input for above */
short *kbdmop; /* Output for above */
char pat[NPAT]; /* Pattern */
typedef struct {
short k_code; /* Key code */
int (*k_fp)(); /* Routine to handle it */
} KEYTAB;
extern int ctrlg(); /* Abort out of things */
extern int quit(); /* Quit */
extern int ctlxlp(); /* Begin macro */
extern int ctlxrp(); /* End macro */
extern int ctlxe(); /* Execute macro */
extern int fileread(); /* Get a file, read only */
extern int filevisit(); /* Get a file, read write */
extern int filewrite(); /* Write a file */
extern int filesave(); /* Save current file */
extern int filename(); /* Adjust file name */
extern int getccol(); /* Get current column */
extern int gotobol(); /* Move to start of line */
extern int forwchar(); /* Move forward by characters */
extern int gotoeol(); /* Move to end of line */
extern int backchar(); /* Move backward by characters */
extern int forwline(); /* Move forward by lines */
extern int backline(); /* Move backward by lines */
extern int forwpage(); /* Move forward by pages */
extern int backpage(); /* Move backward by pages */
extern int gotobob(); /* Move to start of buffer */
extern int gotoeob(); /* Move to end of buffer */
extern int setfillcol(); /* Set fill column. */
extern int setmark(); /* Set mark */
extern int swapmark(); /* Swap "." and mark */
extern int forwsearch(); /* Search forward */
extern int backsearch(); /* Search backwards */
extern int showcpos(); /* Show the cursor position */
extern int nextwind(); /* Move to the next window */
extern int prevwind(); /* Move to the previous window */
extern int onlywind(); /* Make current window only one */
extern int splitwind(); /* Split current window */
extern int mvdnwind(); /* Move window down */
extern int mvupwind(); /* Move window up */
extern int enlargewind(); /* Enlarge display window. */
extern int shrinkwind(); /* Shrink window. */
extern int listbuffers(); /* Display list of buffers */
extern int usebuffer(); /* Switch a window to a buffer */
extern int killbuffer(); /* Make a buffer go away. */
extern int reposition(); /* Reposition window */
extern int refresh(); /* Refresh the screen */
extern int twiddle(); /* Twiddle characters */
extern int tab(); /* Insert tab */
extern int newline(); /* Insert CR-LF */
extern int indent(); /* Insert CR-LF, then indent */
extern int openline(); /* Open up a blank line */
extern int deblank(); /* Delete blank lines */
extern int quote(); /* Insert literal */
extern int backword(); /* Backup by words */
extern int forwword(); /* Advance by words */
extern int forwdel(); /* Forward delete */
extern int backdel(); /* Backward delete */
extern int kill(); /* Kill forward */
extern int yank(); /* Yank back from killbuffer. */
extern int upperword(); /* Upper case word. */
extern int lowerword(); /* Lower case word. */
extern int upperregion(); /* Upper case region. */
extern int lowerregion(); /* Lower case region. */
extern int capword(); /* Initial capitalize word. */
extern int delfword(); /* Delete forward word. */
extern int delbword(); /* Delete backward word. */
extern int killregion(); /* Kill region. */
extern int copyregion(); /* Copy region to kill buffer. */
extern int spawncli(); /* Run CLI in a subjob. */
extern int spawn(); /* Run a command in a subjob. */
extern int quickexit(); /* low keystroke style exit. */
extern int metacmds(); /* meta commands addec c.jutzi */
/*
* Command table.
* This table is *roughly* in ASCII order, left to right across the
* characters of the command. This expains the funny location of the
* control-X commands.
*/
KEYTAB keytab[] = {
CTRL|'@', setmark,
CTRL|'A', gotobol,
CTRL|'B', backchar,
CTRL|'C', spawncli, /* Run CLI in subjob. */
CTRL|'D', forwdel,
CTRL|'E', gotoeol,
CTRL|'F', forwchar,
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