36468: Fix infinite loop exiting from Zle widget.

If the exit was while we were waiting to complete a lexical expression
we might not exit from the loop.

2 files changed, 10 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index b9bb8a575..bf7f27edf 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2015-09-10  Peter Stephenson  <p.stephenson@samsung.com>
 
+	* 36468: Src/hist.c: Infinite loop if we tried to exit from a
+	Zle widget but the lexer thought the current lexical expression
+	needed finishing.
+
 	* 36460: Test/E01options.ztst: Discard benign error on failure
 	to write to pipe with no one reading.
 
diff --git a/Src/hist.c b/Src/hist.c
index 75e809c48..9c42d85c9 100644
--- a/Src/hist.c
+++ b/Src/hist.c
@@ -390,6 +390,12 @@ ihgetc(void)
 {
     int c = ingetc();
 
+    if (exit_pending)
+    {
+	lexstop = 1;
+	errflag |= ERRFLAG_ERROR;
+	return ' ';
+    }
     qbang = 0;
     if (!stophist && !(inbufflags & INP_ALIAS)) {
 	/* If necessary, expand history characters. */