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Add support for underscores in variable names.

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This commit is contained in:
Matt Kraai 2001-08-06 14:14:18 +00:00
parent b373a8d0ca
commit 69edfecfb9
2 changed files with 26 additions and 26 deletions
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26
msh.c
View File

@ -1261,7 +1261,7 @@ static void
ronly(vp)
struct var *vp;
{
if (isalpha(vp->name[0])) /* not an internal symbol ($# etc) */
if (isalpha(vp->name[0]) || vp->name[0] == '_') /* not an internal symbol */
vp->status |= RONLY;
}
@ -1269,10 +1269,10 @@ static int
isassign(s)
register char *s;
{
if (!isalpha((int)*s))
if (!isalpha((int)*s) && *s != '_')
return(0);
for (; *s != '='; s++)
if (*s == 0 || !isalnum(*s))
if (*s == 0 || (!isalnum(*s) && *s != '_'))
return(0);
return(1);
}
@ -1285,10 +1285,10 @@ int cf;
register char *cp;
struct var *vp;
if (!isalpha(*s))
if (!isalpha(*s) && *s != '_')
return(0);
for (cp = s; *cp != '='; cp++)
if (*cp == 0 || !isalnum(*cp))
if (*cp == 0 || (!isalnum(*cp) && *cp != '_'))
return(0);
vp = lookup(s);
nameval(vp, ++cp, cf == COPYV? (char *)NULL: s);
@ -1301,10 +1301,10 @@ static int
checkname(cp)
register char *cp;
{
if (!isalpha(*cp++))
if (!isalpha(*cp++) && *(cp-1) != '_')
return(0);
while (*cp)
if (!isalnum(*cp++))
if (!isalnum(*cp++) && *(cp-1) != '_')
return(0);
return(1);
}
@ -1316,7 +1316,7 @@ register int f, out;
register struct var *vp;
for (vp = vlist; vp; vp = vp->next)
if (vp->status & f && isalpha(*vp->name)) {
if (vp->status & f && (isalpha(*vp->name) || *vp->name == '_')) {
if (vp->status & EXPORT)
write(out, "export ", 7);
if (vp->status & RONLY)
@ -3406,7 +3406,7 @@ varput(s, out)
register char *s;
int out;
{
if (isalnum(*s)) {
if (isalnum(*s) || *s == '_') {
write(out, s, strlen(s));
write(out, "\n", 1);
}
@ -3613,7 +3613,7 @@ loop:
c = 0;
}
unget(c);
if (!isalpha(c))
if (!isalpha(c) && c != '_')
scanequals = 0;
for (;;) {
c = subgetc('"', foundequals);
@ -3631,7 +3631,7 @@ loop:
foundequals = 1;
scanequals = 0;
}
else if (!isalnum(c))
else if (!isalnum(c) && c != '_')
scanequals = 0;
}
*e.linep++ = c;
@ -3684,8 +3684,8 @@ int quoted;
s = e.linep;
if (c != '{') {
*e.linep++ = c;
if (isalpha(c)) {
while ((c = readc())!=0 && isalnum(c))
if (isalpha(c) || c == '_') {
while ((c = readc())!=0 && (isalnum(c) || c == '_'))
if (e.linep < elinep)
*e.linep++ = c;
unget(c);

26
shell/msh.c
View File

@ -1261,7 +1261,7 @@ static void
ronly(vp)
struct var *vp;
{
if (isalpha(vp->name[0])) /* not an internal symbol ($# etc) */
if (isalpha(vp->name[0]) || vp->name[0] == '_') /* not an internal symbol */
vp->status |= RONLY;
}
@ -1269,10 +1269,10 @@ static int
isassign(s)
register char *s;
{
if (!isalpha((int)*s))
if (!isalpha((int)*s) && *s != '_')
return(0);
for (; *s != '='; s++)
if (*s == 0 || !isalnum(*s))
if (*s == 0 || (!isalnum(*s) && *s != '_'))
return(0);
return(1);
}
@ -1285,10 +1285,10 @@ int cf;
register char *cp;
struct var *vp;
if (!isalpha(*s))
if (!isalpha(*s) && *s != '_')
return(0);
for (cp = s; *cp != '='; cp++)
if (*cp == 0 || !isalnum(*cp))
if (*cp == 0 || (!isalnum(*cp) && *cp != '_'))
return(0);
vp = lookup(s);
nameval(vp, ++cp, cf == COPYV? (char *)NULL: s);
@ -1301,10 +1301,10 @@ static int
checkname(cp)
register char *cp;
{
if (!isalpha(*cp++))
if (!isalpha(*cp++) && *(cp-1) != '_')
return(0);
while (*cp)
if (!isalnum(*cp++))
if (!isalnum(*cp++) && *(cp-1) != '_')
return(0);
return(1);
}
@ -1316,7 +1316,7 @@ register int f, out;
register struct var *vp;
for (vp = vlist; vp; vp = vp->next)
if (vp->status & f && isalpha(*vp->name)) {
if (vp->status & f && (isalpha(*vp->name) || *vp->name == '_')) {
if (vp->status & EXPORT)
write(out, "export ", 7);
if (vp->status & RONLY)
@ -3406,7 +3406,7 @@ varput(s, out)
register char *s;
int out;
{
if (isalnum(*s)) {
if (isalnum(*s) || *s == '_') {
write(out, s, strlen(s));
write(out, "\n", 1);
}
@ -3613,7 +3613,7 @@ loop:
c = 0;
}
unget(c);
if (!isalpha(c))
if (!isalpha(c) && c != '_')
scanequals = 0;
for (;;) {
c = subgetc('"', foundequals);
@ -3631,7 +3631,7 @@ loop:
foundequals = 1;
scanequals = 0;
}
else if (!isalnum(c))
else if (!isalnum(c) && c != '_')
scanequals = 0;
}
*e.linep++ = c;
@ -3684,8 +3684,8 @@ int quoted;
s = e.linep;
if (c != '{') {
*e.linep++ = c;
if (isalpha(c)) {
while ((c = readc())!=0 && isalnum(c))
if (isalpha(c) || c == '_') {
while ((c = readc())!=0 && (isalnum(c) || c == '_'))
if (e.linep < elinep)
*e.linep++ = c;
unget(c);