vis-lua: let vis:map override existing mappings

It now also unmaps all previously mapped prefixes of the new mapping.
See 0ef138085f885d4576a8e53d079e1f00f80799bf and #271.

1 files changed, 14 insertions, 0 deletions

diff --git a/vis-lua.c b/vis-lua.c
index 9df2a8e..0096a4f 100644
--- a/vis-lua.c
+++ b/vis-lua.c
@@ -403,6 +403,20 @@ static int map(lua_State *L) {
 
 	binding->action = action;
 
+	char *lhs = strdup(key), *next = lhs;
+	while (next) {
+		char tmp;
+		next = (char*)vis_keys_next(vis, next);
+		if (next) {
+			tmp = *next;
+			*next = '\0';
+		}
+		vis_mode_unmap(vis, mode, lhs);
+		if (next)
+			*next = tmp;
+	}
+	free(lhs);
+
 	if (!vis_mode_map(vis, mode, key, binding))
 		goto err;