ash,hush: history builtin

function                                             old     new   delta
show_history                                           -      39     +39
builtin_history                                        -      16     +16
historycmd                                             -      13     +13
bltins1                                              312     324     +12
builtintab                                           336     344      +8
popstring                                            134     140      +6
hush_main                                           1048    1046      -2
ash_main                                            1398    1396      -2
size_from_HISTFILESIZE                                44      40      -4
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 3/3 up/down: 94/-8)              Total: 86 bytes

Signed-off-by: Flemming Madsen <busybox@themadsens.dk>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 29 insertions, 0 deletions

diff --git a/shell/ash.c b/shell/ash.c
index edcb7c028..6af14f551 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -9033,6 +9033,9 @@ static int getoptscmd(int, char **) FAST_FUNC;
 #if !ENABLE_FEATURE_SH_EXTRA_QUIET
 static int helpcmd(int, char **) FAST_FUNC;
 #endif
+#if MAX_HISTORY
+static int historycmd(int, char **) FAST_FUNC;
+#endif
 #if ENABLE_SH_MATH_SUPPORT
 static int letcmd(int, char **) FAST_FUNC;
 #endif
@@ -9106,6 +9109,9 @@ static const struct builtincmd builtintab[] = {
 #if !ENABLE_FEATURE_SH_EXTRA_QUIET
         { BUILTIN_NOSPEC        "help"    , helpcmd    },
 #endif
+#if MAX_HISTORY
+        { BUILTIN_NOSPEC        "history" , historycmd },
+#endif
 #if JOBS
         { BUILTIN_REGULAR       "jobs"    , jobscmd    },
         { BUILTIN_REGULAR       "kill"    , killcmd    },
@@ -12621,6 +12627,15 @@ helpcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
 }
 #endif /* FEATURE_SH_EXTRA_QUIET */
 
+#if MAX_HISTORY
+static int FAST_FUNC
+historycmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
+{
+        show_history(line_input_state);
+        return EXIT_SUCCESS;
+}
+#endif
+
 /*
  * The export and readonly commands.
  */
diff --git a/shell/hush.c b/shell/hush.c
index 1d421dc38..7cebe1784 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -850,6 +850,9 @@ static int builtin_jobs(char **argv) FAST_FUNC;
 #if ENABLE_HUSH_HELP
 static int builtin_help(char **argv) FAST_FUNC;
 #endif
+#if MAX_HISTORY
+static int builtin_history(char **argv) FAST_FUNC;
+#endif
 #if ENABLE_HUSH_LOCAL
 static int builtin_local(char **argv) FAST_FUNC;
 #endif
@@ -919,6 +922,9 @@ static const struct built_in_command bltins1[] = {
 #if ENABLE_HUSH_HELP
         BLTIN("help"     , builtin_help    , NULL),
 #endif
+#if MAX_HISTORY
+        BLTIN("history"  , builtin_history , "Show command history"),
+#endif
 #if ENABLE_HUSH_JOB
         BLTIN("jobs"     , builtin_jobs    , "List jobs"),
 #endif
@@ -8627,6 +8633,14 @@ static int FAST_FUNC builtin_help(char **argv UNUSED_PARAM)
 }
 #endif
 
+#if MAX_HISTORY
+static int FAST_FUNC builtin_history(char **argv UNUSED_PARAM)
+{
+        show_history(G.line_input_state);
+        return EXIT_SUCCESS;
+}
+#endif
+
 #if ENABLE_HUSH_JOB
 static int FAST_FUNC builtin_jobs(char **argv UNUSED_PARAM)
 {