Do not do any find/replace when there is no find text.

2 files changed, 3 insertions, 0 deletions

diff --git a/core/ext/find.lua b/core/ext/find.lua
index 5aea4a35..cc7763d6 100644
--- a/core/ext/find.lua
+++ b/core/ext/find.lua
@@ -31,6 +31,7 @@ local escapes = {
 --   internally, and should not be set otherwise.
 -- @return position of the found text or -1
 function find.find(text, next, flags, nowrap, wrapped)
+  if #text == 0 then return end
   local buffer = buffer
   local locale = textadept.locale
   local first_visible_line = buffer.first_visible_line -- for 'no results found'
@@ -209,6 +210,7 @@ end
 -- @param flags The number mask identical to the one in 'find'.
 -- @see find.find
 function find.replace_all(ftext, rtext, flags)
+  if #ftext == 0 then return end
   local buffer = buffer
   if find.in_files then find.in_files = false end
   buffer:begin_undo_action()
diff --git a/src/textadept.c b/src/textadept.c
index d2836397..ee2f4da6 100644
--- a/src/textadept.c
+++ b/src/textadept.c
@@ -973,6 +973,7 @@ static void find_add_to_history(const char *text, GtkListStore *store) {
 static void button_clicked(GtkWidget *button, gpointer) {
   const char *find_text = gtk_entry_get_text(GTK_ENTRY(find_entry));
   const char *repl_text = gtk_entry_get_text(GTK_ENTRY(replace_entry));
+  if (strlen(find_text) == 0) return;
   if (button == fnext_button || button == fprev_button) {
     find_add_to_history(find_text, find_store);
     l_find(find_text, button == fnext_button);