lineedit: tweak tab completion of commands in standalone shell mode

When tab-completing commands in standalone shell mode:

  don't search the list of applet names if the command includes a
  path separator;

  since "busybox" doesn't appear in the list of applet names check
  for it separately.

1 files changed, 11 insertions, 3 deletions

diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index 6c91f1794..2566abd38 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -679,6 +679,14 @@ static void add_match(char *matched)
         num_matches++;
 }
 
+#if ENABLE_FEATURE_SH_STANDALONE && NUM_APPLETS != 1
+static void add_partial_match(const char *part, const char *full, int plen)
+{
+        if (strncmp(part, full, plen) == 0)
+                add_match(xstrdup(full));
+}
+#endif
+
 # if ENABLE_FEATURE_USERNAME_COMPLETION
 /* Replace "~user/..." with "/homedir/...".
  * The parameter is malloced, free it or return it
@@ -826,15 +834,15 @@ static NOINLINE unsigned complete_cmd_dir_file(const char *command, int type)
         pf_len = strlen(pfind);
 
 #if ENABLE_FEATURE_SH_STANDALONE && NUM_APPLETS != 1
-        if (type == FIND_EXE_ONLY) {
+        if (type == FIND_EXE_ONLY && dirbuf == NULL) {
                 const char *p = applet_names;
 
                 while (*p) {
-                        if (strncmp(pfind, p, pf_len) == 0)
-                                add_match(xstrdup(p));
+                        add_partial_match(pfind, p, pf_len);
                         while (*p++ != '\0')
                                 continue;
                 }
+                add_partial_match(pfind, "busybox", pf_len);
         }
 #endif