hush: small code shrink

function                                             old     new   delta
expand_vars_to_list                                 2012    1999     -13

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

diff --git a/shell/hush.c b/shell/hush.c
index 824a5b5..d5cea07 100644 (file)
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -2569,7 +2569,7 @@ static NOINLINE int expand_vars_to_list(o_string *output, int n, char *arg, char
                default: /* <SPECIAL_VAR_SYMBOL>varname<SPECIAL_VAR_SYMBOL> */
                case_default: {
                        char *var = arg;
-                       bool exp_len;
+                       char exp_len; /* '#' if it's ${#var} */
                        char exp_op;
                        char exp_save = exp_save; /* for compiler */
                        char *exp_saveptr = exp_saveptr; /* points to expansion operator */
@@ -2579,12 +2579,11 @@ static NOINLINE int expand_vars_to_list(o_string *output, int n, char *arg, char
                        arg[0] = first_ch & 0x7f;
 
                        /* prepare for expansions */
-                       exp_len = false;
                        exp_op = 0;
-                       if (var[0] == '#') {
+                       exp_len = var[0];
+                       if (exp_len == '#') {
                                /* handle length expansion ${#var} */
-                               exp_len = true;
-                               ++var;
+                               var++;
                        } else {
                                /* maybe handle parameter expansion */
                                exp_saveptr = var + strcspn(var, ":-=+?%#");
@@ -2609,8 +2608,8 @@ static NOINLINE int expand_vars_to_list(o_string *output, int n, char *arg, char
                                val = get_local_var_value(var);
 
                        /* handle any expansions */
-                       if (exp_len) {
-                               debug_printf_expand("expand: length of '%s' = ", val);
+                       if (exp_len == '#') {
+                               debug_printf_expand("expand: length(%s)=", val);
                                val = utoa(val ? strlen(val) : 0);
                                debug_printf_expand("%s\n", val);
                        } else if (exp_op) {