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-rw-r--r--ext/readline/extconf.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/readline/extconf.rb b/ext/readline/extconf.rb
index 4920137bf1..0b121c1ebe 100644
--- a/ext/readline/extconf.rb
+++ b/ext/readline/extconf.rb
@@ -93,4 +93,5 @@ readline.have_func("remove_history")
readline.have_func("clear_history")
readline.have_func("rl_redisplay")
readline.have_func("rl_insert_text")
+readline.have_func("rl_delete_text")
create_makefile("readline")