Only drop blank prefixed history entries in command/shell prompts

For regex prompts we actually want to save them, as a leading space
is significant

Fixes #767

1 files changed, 10 insertions, 1 deletions

diff --git a/src/input_handler.hh b/src/input_handler.hh
index c4fcb1a3..a26bbbd4 100644
--- a/src/input_handler.hh
+++ b/src/input_handler.hh
@@ -29,6 +29,15 @@ enum class PromptEvent
     Validate
 };
 using PromptCallback = std::function<void (StringView, PromptEvent, Context&)>;
+enum class PromptFlags
+{
+    None = 0,
+    Password = 1 << 0,
+    DropHistoryEntriesWithBlankPrefix = 1 << 1
+};
+template<> struct WithBitOps<PromptFlags> : std::true_type {};
+
+
 using KeyCallback = std::function<void (Key, Context&)>;
 
 class InputMode;
@@ -53,7 +62,7 @@ public:
     // returns to normal mode after validation if callback does
     // not change the mode itself
     void prompt(StringView prompt, String initstr,
-                Face prompt_face, bool password,
+                Face prompt_face, PromptFlags flags,
                 Completer completer, PromptCallback callback);
     void set_prompt_face(Face prompt_face);