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edit/vi.c: sanity checks from OpenSUSE

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Source: https://build.opensuse.org/package/view_file/shells/ksh/ksh93-vi.dif
Patch from 2007, apparently never upstreamed.
This commit is contained in:
Martijn Dekker 2021-01-28 04:35:46 +00:00
parent 3ad4307054
commit 129614b99f
1 changed files with 11 additions and 1 deletions
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12
src/cmd/ksh93/edit/vi.c
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@ -385,6 +385,8 @@ int ed_viread(void *context, int fd, register char *shbuf, int nchar, int reedit
if(!yankbuf)
yankbuf = (genchar*)malloc(MAXLINE*CHARSIZE);
if(!vp->lastline)
vp->lastline = (genchar*)malloc(MAXLINE*CHARSIZE);
if( vp->last_cmd == '\0' )
{
/*** first time for this shell ***/
@ -394,6 +396,8 @@ int ed_viread(void *context, int fd, register char *shbuf, int nchar, int reedit
vp->lastmotion = '\0';
vp->lastrepeat = 1;
vp->repeat = 1;
if(!yankbuf)
return(-1);
*yankbuf = 0;
}
@ -1117,7 +1121,7 @@ static void cdelete(Vi_t *vp,register int nchars, int mode)
/*** save characters to be deleted ***/
if( mode != 'c' )
if( mode != 'c' && yankbuf )
{
i = cp[nchars];
cp[nchars] = 0;
@ -2172,6 +2176,8 @@ static void save_last(register Vi_t* vp)
{
register int i;
if(vp->lastline == NULL)
return;
if( (i = cur_virt - first_virt + 1) > 0 )
{
/*** save last thing user typed ***/
@ -2420,6 +2426,8 @@ static int textmod(register Vi_t *vp,register int c, int mode)
/*** change p from lastline to yankbuf ***/
p = yankbuf;
}
if(!p)
return(BAD);
addin:
switch( c )
@ -2693,6 +2701,8 @@ yankeol:
vp->lastmotion = c;
if( c == 'y' )
{
if(!yankbuf)
return(BAD);
gencpy(yankbuf, virtual);
}
else if(!delmotion(vp, c, 'y'))