From e061a0d604ecc36acdf54fb9d2d5d1b125ef8bae Mon Sep 17 00:00:00 2001
From: Chris Allegretta <chrisa@asty.org>
Date: Sat, 25 Apr 2009 03:31:30 +0000
Subject: [PATCH] Add undoing check for do_enter so redo doesn't blow up. Hate
 to piecemeal these fixed but system unstability is teh suck.

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@4392 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
---
 src/global.c | 2 +-
 src/nano.c   | 2 +-
 src/proto.h  | 2 +-
 src/text.c   | 7 ++++---
 4 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/global.c b/src/global.c
index 1816b52c..6345aeda 100644
--- a/src/global.c
+++ b/src/global.c
@@ -1214,7 +1214,7 @@ void iso_me_harder_funcmap(short func)
     else if (func == DO_RIGHT)
 	do_right();
     else if (func == DO_ENTER)
-	do_enter();
+	do_enter(FALSE);
     else if (func == DO_EXIT)
 	do_exit();
     else if (func == DO_FIRST_LINE)
diff --git a/src/nano.c b/src/nano.c
index e59526e2..19a81cd0 100644
--- a/src/nano.c
+++ b/src/nano.c
@@ -1853,7 +1853,7 @@ void do_output(char *output, size_t output_len, bool allow_cntrls)
 		output[i] = '\n';
 	    /* Newline to Enter, if needed. */
 	    else if (output[i] == '\n') {
-		do_enter();
+		do_enter(FALSE);
 		i++;
 		continue;
 	    }
diff --git a/src/proto.h b/src/proto.h
index ba59e51e..752bb1e4 100644
--- a/src/proto.h
+++ b/src/proto.h
@@ -624,7 +624,7 @@ void do_unindent(void);
 void do_undo(void);
 void do_redo(void);
 #endif
-void do_enter(void);
+void do_enter(bool undoing);
 #ifndef NANO_TINY
 RETSIGTYPE cancel_command(int signal);
 bool execute_command(const char *command);
diff --git a/src/text.c b/src/text.c
index 1c809203..62ef1ff9 100644
--- a/src/text.c
+++ b/src/text.c
@@ -608,7 +608,7 @@ void do_redo(void)
     case ENTER:
 	undidmsg = _("line break");
 	do_gotolinecolumn(u->lineno, u->begin+1, FALSE, FALSE, FALSE, FALSE);
-	do_enter();
+	do_enter(TRUE);
 	break;
     case SPLIT:
 	undidmsg = _("line wrap");
@@ -671,7 +671,7 @@ void do_redo(void)
 #endif /* !NANO_TINY */
 
 /* Someone hits Enter *gasp!* */
-void do_enter(void)
+void do_enter(bool undoing)
 {
     filestruct *newnode = make_new_node(openfile->current);
     size_t extra = 0;
@@ -679,7 +679,8 @@ void do_enter(void)
     assert(openfile->current != NULL && openfile->current->data != NULL);
 
 #ifndef NANO_TINY
-    update_undo(ENTER);
+    if (!undoing)
+	add_undo(ENTER);
 
 
     /* Do auto-indenting, like the neolithic Turbo Pascal editor. */
-- 
2.39.5