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Fix PR/2070: Ksh style variable modifiers were broken in /bin/sh, from 

enami tsugutomo
This commit is contained in:
christos 1996-02-12 15:11:41 +00:00
parent 19dc07be15
commit d3aec2060d
1 changed files with 20 additions and 11 deletions
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31
bin/sh/expand.c
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@ -1,4 +1,4 @@
/* $NetBSD: expand.c,v 1.19 1995/05/15 02:47:41 christos Exp $ */
/* $NetBSD: expand.c,v 1.20 1996/02/12 15:11:41 christos Exp $ */
/*-
* Copyright (c) 1991, 1993
@ -40,7 +40,7 @@
#if 0
static char sccsid[] = "@(#)expand.c 8.5 (Berkeley) 5/15/95";
#else
static char rcsid[] = "$NetBSD: expand.c,v 1.19 1995/05/15 02:47:41 christos Exp $";
static char rcsid[] = "$NetBSD: expand.c,v 1.20 1996/02/12 15:11:41 christos Exp $";
#endif
#endif /* not lint */
@ -98,7 +98,7 @@ struct arglist exparg; /* holds expanded arg list */
STATIC void argstr __P((char *, int));
STATIC char *exptilde __P((char *, int));
STATIC void expbackq __P((union node *, int, int));
STATIC int subevalvar __P((char *, char *, int, int, int));
STATIC int subevalvar __P((char *, char *, int, int, int, int));
STATIC char *evalvar __P((char *, int));
STATIC int varisset __P((int));
STATIC void varvalue __P((int, int, int));
@ -424,30 +424,35 @@ expbackq(cmd, quoted, flag)
STATIC int
subevalvar(p, str, subtype, startloc, varflags)
subevalvar(p, str, strloc, subtype, startloc, varflags)
char *p;
char *str;
int strloc;
int subtype;
int startloc;
int varflags;
{
char *startp;
char *loc;
int c = 0;
int saveherefd = herefd;
struct nodelist *saveargbackq = argbackq;
int amount;
herefd = -1;
argstr(p, 0);
STACKSTRNUL(expdest);
herefd = saveherefd;
argbackq = saveargbackq;
startp = stackblock() + startloc;
if (str == NULL)
str = stackblock() + strloc;
switch (subtype) {
case VSASSIGN:
setvar(str, startp, 0);
STADJUST(startp - expdest, expdest);
amount = startp - expdest;
STADJUST(amount, expdest);
varflags &= ~VSNUL;
if (c != 0)
*loc = c;
@ -490,7 +495,8 @@ subevalvar(p, str, subtype, startloc, varflags)
case VSTRIMRIGHT:
for (loc = str - 1; loc >= startp; loc--) {
if (patmatch(str, loc)) {
expdest = loc;
amount = loc - expdest;
STADJUST(amount, expdest);
return 1;
}
}
@ -499,7 +505,8 @@ subevalvar(p, str, subtype, startloc, varflags)
case VSTRIMRIGHTMAX:
for (loc = startp; loc < str - 1; loc++) {
if (patmatch(str, loc)) {
expdest = loc;
amount = loc - expdest;
STADJUST(amount, expdest);
return 1;
}
}
@ -511,7 +518,8 @@ subevalvar(p, str, subtype, startloc, varflags)
}
recordleft:
expdest = (str - 1) - (loc - startp);
amount = ((str - 1) - (loc - startp)) - expdest;
STADJUST(amount, expdest);
while (loc != str - 1)
*startp++ = *loc++;
return 1;
@ -633,14 +641,15 @@ record:
*/
STPUTC('\0', expdest);
pat = expdest;
if (subevalvar(p, pat, subtype, startloc, varflags))
if (subevalvar(p, NULL, expdest - stackblock(), subtype,
startloc, varflags))
goto record;
break;
case VSASSIGN:
case VSQUESTION:
if (!set) {
if (subevalvar(p, var, subtype, startloc, varflags))
if (subevalvar(p, var, 0, subtype, startloc, varflags))
goto again;
break;
}