hush: quote values in "readonly" output

function                                             old     new   delta
builtin_readonly                                      61     107     +46
builtin_export                                       140     145      +5
.rodata                                           105321  105304     -17
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 51/-17)             Total: 34 bytes

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

1 files changed, 11 insertions, 4 deletions

diff --git a/shell/hush.c b/shell/hush.c
index 426182924..ec4f3a2f2 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -11307,8 +11307,8 @@ static int FAST_FUNC builtin_export(char **argv)
 
                                 if (!p) /* wtf? take next variable */
                                         continue;
-                                /* export var= */
-                                printf("export %.*s", (int)(p - s) + 1, s);
+                                /* "export VAR=" */
+                                printf("%s %.*s", "export", (int)(p - s) + 1, s);
                                 print_escaped(p + 1);
                                 putchar('\n');
 # endif
@@ -11352,8 +11352,15 @@ static int FAST_FUNC builtin_readonly(char **argv)
                 struct variable *e;
                 for (e = G.top_var; e; e = e->next) {
                         if (e->flg_read_only) {
-//TODO: quote value: readonly VAR='VAL'
-                                printf("readonly %s\n", e->varstr);
+                                const char *s = e->varstr;
+                                const char *p = strchr(s, '=');
+
+                                if (!p) /* wtf? take next variable */
+                                        continue;
+                                /* "readonly VAR=" */
+                                printf("%s %.*s", "readonly", (int)(p - s) + 1, s);
+                                print_escaped(p + 1);
+                                putchar('\n');
                         }
                 }
                 return EXIT_SUCCESS;