shell: move varcmp() to shell_common.h and use it in hush

function                                             old     new   delta
unset_local_var                                        -     112    +112
findvar                                               31      35      +4
set_vars_and_save_old                                144     141      -3
helper_export_local                                  235     230      -5
set_local_var                                        425     416      -9
handle_changed_special_names                          38      27     -11
builtin_unset                                        154     141     -13
builtin_getopts                                      404     391     -13
get_local_var_value                                  281     260     -21
get_ptr_to_local_var                                  71      45     -26
unset_local_var_len                                  139       -    -139
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/8 up/down: 116/-240)         Total: -124 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 0 insertions, 24 deletions

diff --git a/shell/ash.c b/shell/ash.c
index dde36dd7c..96d2433d3 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -2260,30 +2260,6 @@ getoptsreset(const char *value)
 #endif
 
 /*
- * Compares two strings up to the first = or '\0'.  The first
- * string must be terminated by '='; the second may be terminated by
- * either '=' or '\0'.
- */
-static int
-varcmp(const char *p, const char *q)
-{
-        int c, d;
-
-        while ((c = *p) == (d = *q)) {
-                if (c == '\0' || c == '=')
-                        goto out;
-                p++;
-                q++;
-        }
-        if (c == '=')
-                c = '\0';
-        if (d == '=')
-                d = '\0';
- out:
-        return c - d;
-}
-
-/*
  * Find the appropriate entry in the hash table from the name.
  */
 static struct var **