>From 224bc528cf345f8ce73afe77e631df08791bf9fe Mon Sep 17 00:00:00 2001
From: Bernhard R. Link <address@hidden>
Date: Sun, 15 Jun 2008 15:02:03 +0200
Subject: [PATCH] make history expansion an option (switched off by default)

---
 src/actions.c |   16 ++++++++++++++++
 src/data.h    |    2 ++
 src/editor.c  |    6 ++++++
 src/main.c    |    1 +
 4 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/src/actions.c b/src/actions.c
index aa379f2..aafb84c 100644
--- a/src/actions.c
+++ b/src/actions.c
@@ -72,6 +72,7 @@ static cmdret * set_infofmt (struct cmdarg **args);
 static cmdret * set_topkmap (struct cmdarg **args);
 static cmdret * set_historysize (struct cmdarg **args);
 static cmdret * set_historycompaction (struct cmdarg **args);
+static cmdret * set_historyexpansion (struct cmdarg **args);
 
 LIST_HEAD(set_vars);
 
@@ -138,6 +139,7 @@ init_set_vars(void)
   add_set_var ("topkmap", set_topkmap, 1, "", arg_STRING);
   add_set_var ("historysize", set_historysize, 1, "", arg_NUMBER);
   add_set_var ("historycompaction", set_historycompaction, 1, "", arg_NUMBER);
+  add_set_var ("historyexpansion", set_historyexpansion, 1, "", arg_NUMBER);
 }
 
 /* rp_keymaps is ratpoison's list of keymaps. */
@@ -3596,6 +3598,20 @@ set_historycompaction (struct cmdarg **args)
 }
 
 static cmdret *
+set_historyexpansion (struct cmdarg **args)
+{
+  if (args[0] == NULL)
+    return cmdret_new (RET_SUCCESS, "%d", defaults.history_expansion);
+#ifndef HAVE_HISTORY
+  if (ARG(0, number)) {
+    return cmdret_new (RET_FAILURE, "Not compiled with libhistory");
+  }
+#endif
+  defaults.history_expansion = ARG(0, number);
+  return cmdret_new (RET_SUCCESS, NULL);
+}
+
+static cmdret *
 set_font (struct cmdarg **args)
 {
 #ifdef USE_XFT_FONT
diff --git a/src/data.h b/src/data.h
index 5dcd3c6..0c89719 100644
--- a/src/data.h
+++ b/src/data.h
@@ -256,6 +256,8 @@ struct rp_defaults
   int history_size;
   /* remove older history when adding the same again */
   int history_compaction;
+  /* expand ! when compiled with libhistory */
+  int history_expansion;
 
   char *frame_selectors;
 
diff --git a/src/editor.c b/src/editor.c
index 0623186..23b6e35 100644
--- a/src/editor.c
+++ b/src/editor.c
@@ -457,6 +457,12 @@ editor_enter (rp_input_line *line)
   char *expansion;
 
   line->buffer[line->length] = '\0';
+
+  if (!defaults.history_expansion) {
+      history_add (line->history_id, line->buffer);
+      return EDIT_DONE;
+  }
+
   result = history_expand_line (line->history_id, line->buffer, &expansion);
 
   PRINT_DEBUG (("History Expansion - result: %d\n", result));
diff --git a/src/main.c b/src/main.c
index 21f86dd..ec7bee8 100644
--- a/src/main.c
+++ b/src/main.c
@@ -562,6 +562,7 @@ init_defaults (void)
 
   defaults.history_size = 20;
   defaults.history_compaction = True;
+  defaults.history_expansion = False;
   defaults.frame_selectors = xstrdup ("");
   defaults.maxundos = 20;
 }
-- 
1.4.4.4