Fix ICU search problem / caret not escaped.

For some ICU versions (4.0.1, possibly others) the normalized term
may include a caret (^) in it and so this chracter must also be
escaped before turned into a regular expression.

diff --git a/index/rpnsearch.c b/index/rpnsearch.c
index fc78870..0bbfdf1 100644 (file)
--- a/index/rpnsearch.c
+++ b/index/rpnsearch.c
@@ -203,7 +203,7 @@ static void esc_str(char *out_buf, size_t out_size,
     }
 }
 
-#define REGEX_CHARS " []()|.*+?!\"$"
+#define REGEX_CHARS " ^[]()|.*+?!\"$"
 
 static void add_non_space(const char *start, const char *end,
                           WRBUF term_dict,