ash,hush: tab completion of functions and aliases

Rework the 'get_exe_name' functions in ash and hush so functions
and aliases are considered when tab-completing a command.

function                                             old     new   delta
ash_command_name                                       -     188    +188
hush_command_name                                      -     118    +118
complete_cmd_dir_file                                876     880      +4
ash_builtin_name                                      17       -     -17
hush_builtin_name                                     38       -     -38
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 1/0 up/down: 310/-55)           Total: 255 bytes

(GitHub issue #301)

Signed-off-by: Ron Yorston <rmy@pobox.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index 625884adf..5daceff16 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -875,9 +875,13 @@ static NOINLINE unsigned complete_cmd_dir_file(const char *command, int type)
 # endif
 # if ENABLE_SHELL_ASH || ENABLE_SHELL_HUSH
                 if (state->get_exe_name) {
-                        i = 0;
+#  if ENABLE_SHELL_ASH || (ENABLE_SHELL_HUSH && ENABLE_HUSH_FUNCTIONS)
+                        exe_state e = { 0, 0, NULL };
+#  else
+                        exe_state e = { 0, 0 };
+#  endif
                         for (;;) {
-                                const char *b = state->get_exe_name(i++);
+                                const char *b = state->get_exe_name(&e);
                                 if (!b)
                                         break;
                                 if (strncmp(basecmd, b, baselen) == 0)