lineedit: search applets as well as PATH for tab completion

In standalone shell mode search the applet table as well as PATH
when tab completing a command.

Use a stupid linear search:  we're also about to read all the
directories on PATH so efficiency isn't a big concern.

function                                             old     new   delta
add_match                                              -      53     +53
complete_cmd_dir_file                                687     724     +37
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/0 up/down: 90/0)               Total: 90 bytes

Signed-off-by: Ron Yorston <rmy@frippery.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 16 insertions, 1 deletions

diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index a83e07c0c..2ddb2b6e9 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -47,7 +47,8 @@
  * It stems from simplistic "cmdedit_y = cmdedit_prmt_len / cmdedit_termw"
  * calculation of how many lines the prompt takes.
  */
-#include "libbb.h"
+#include "busybox.h"
+#include "NUM_APPLETS.h"
 #include "unicode.h"
 #ifndef _POSIX_VDISABLE
 # define _POSIX_VDISABLE '\0'
@@ -774,6 +775,20 @@ 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) {
+                const char *p = applet_names;
+
+                i = 0;
+                while (i < NUM_APPLETS) {
+                        if (strncmp(pfind, p, pf_len) == 0)
+                                add_match(xstrdup(p));
+                        p += strlen(p) + 1;
+                        i++;
+                }
+        }
+#endif
+
         for (i = 0; i < npaths; i++) {
                 DIR *dir;
                 struct dirent *next;