ash,hush: allow builtins to be tab-completed, closes 7532

function                                             old     new   delta
complete_cmd_dir_file                                678     830    +152
get_builtin_name                                       -      35     +35
optschanged                                          125     132      +7
hush_main                                           1069    1076      +7
save_command_ps_at_cur_history                        76      78      +2
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/0 up/down: 203/0)             Total: 203 bytes

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

1 files changed, 13 insertions, 0 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 05a560977..392c0443d 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1818,10 +1818,19 @@ unsigned size_from_HISTFILESIZE(const char *hp) FAST_FUNC;
 # else
 #  define MAX_HISTORY 0
 # endif
+typedef const char *get_exe_name_t(int i) FAST_FUNC;
 typedef struct line_input_t {
         int flags;
         int timeout;
         const char *path_lookup;
+# if ENABLE_FEATURE_TAB_COMPLETION \
+&& (ENABLE_ASH  || ENABLE_SH_IS_ASH  || ENABLE_BASH_IS_ASH \
+||  ENABLE_HUSH || ENABLE_SH_IS_HUSH || ENABLE_BASH_IS_HUSH \
+)
+        /* function to fetch additional application-specific names to match */
+        get_exe_name_t *get_exe_name;
+#  define EDITING_HAS_get_exe_name 1
+# endif
 # if MAX_HISTORY
         int cnt_history;
         int cur_history;
@@ -1868,6 +1877,10 @@ int read_line_input(const char* prompt, char* command, int maxsize) FAST_FUNC;
         read_line_input(prompt, command, maxsize)
 #endif
 
+#ifndef EDITING_HAS_get_exe_name
+# define EDITING_HAS_get_exe_name 0
+#endif
+
 
 #ifndef COMM_LEN
 # ifdef TASK_COMM_LEN