[PATCH] lineedit: search applets as well as PATH for tab completion

[Ron Yorston]

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 at pobox.com>
---
 libbb/lineedit.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index a83e07c..2ddb2b6 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;
-- 
2.1.0