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-rw-r--r--shell/hush.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/shell/hush.c b/shell/hush.c
index 498b14e72..96c949115 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -1647,6 +1647,7 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask)
/* lookup the variable in question */
if (isdigit(var[0])) {
+ /* handle_dollar() should have vetted var for us */
i = xatoi_u(var);
if (i < G.global_argc)
val = G.global_argv[i];
@@ -3726,22 +3727,33 @@ static int handle_dollar(o_string *dest, struct in_str *input)
case '@': /* args */
goto make_one_char_var;
case '{': {
- bool first_char;
+ bool first_char, all_digits;
o_addchr(dest, SPECIAL_VAR_SYMBOL);
i_getch(input);
/* XXX maybe someone will try to escape the '}' */
expansion = 0;
first_char = true;
+ all_digits = false;
while (1) {
ch = i_getch(input);
if (ch == '}')
break;
- if (ch == '#' && first_char)
- /* ${#var}: length of var contents */;
+ if (first_char) {
+ if (ch == '#')
+ /* ${#var}: length of var contents */
+ goto char_ok;
+ else if (isdigit(ch)) {
+ all_digits = true;
+ goto char_ok;
+ }
+ }
- else if (expansion < 2 && !isalnum(ch) && ch != '_') {
+ if (expansion < 2 &&
+ ((all_digits && !isdigit(ch)) ||
+ (!all_digits && !isalnum(ch) && ch != '_')))
+ {
/* handle parameter expansions
* http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_06_02
*/
@@ -3782,6 +3794,8 @@ static int handle_dollar(o_string *dest, struct in_str *input)
return 1;
}
}
+
+ char_ok:
debug_printf_parse(": '%c'\n", ch);
o_addchr(dest, ch | quote_mask);
quote_mask = 0;