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-rw-r--r--readline/history.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/readline/history.h b/readline/history.h
index 8ecce726779..9ae2ee01a7c 100644
--- a/readline/history.h
+++ b/readline/history.h
@@ -232,8 +232,8 @@ extern int max_input_history;
extern char history_expansion_char;
extern char history_subst_char;
extern char history_comment_char;
-extern char *history_no_expand_chars;
-extern char *history_search_delimiter_chars;
+extern const char *history_no_expand_chars;
+extern const char *history_search_delimiter_chars;
extern int history_quotes_inhibit_expansion;
/* If set, this function is called to decide whether or not a particular