From 9f99edda55cf95697b109727f89eed6168160119 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Wed, 5 Feb 2014 08:43:31 +0100
Subject: [PATCH] mothra: better handling of malformed search regex

---
 sys/src/cmd/mothra/mothra.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/sys/src/cmd/mothra/mothra.c b/sys/src/cmd/mothra/mothra.c
index 485ded812..c15bb4a80 100644
--- a/sys/src/cmd/mothra/mothra.c
+++ b/sys/src/cmd/mothra/mothra.c
@@ -699,7 +699,10 @@ void docmd(Panel *p, char *s){
 	pldraw(root, screen);
 }
 
-void regerror(char*){}	/* don't panic */
+void regerror(char *msg)
+{
+	werrstr("regerror: %s", msg);
+}
 
 void search(void){
 	static char last[256];
@@ -713,10 +716,12 @@ void search(void){
 		strncpy(buf, last, sizeof(buf)-1);
 		if(eenter("Search for", buf, sizeof(buf), &mouse) <= 0)
 			return;
-		re = regcompnl(buf);
-		if(re == nil)
-			return;
 		strncpy(last, buf, sizeof(buf)-1);
+		re = regcompnl(buf);
+		if(re == nil){
+			message("%r");
+			continue;
+		}
 		for(tp=current->text;tp;tp=tp->next)
 			if(tp->flags & PL_SEL)
 				break;