vim-patch:8.1.0069: cannot handle pressing CTRL-C in a prompt buffer

Problem:    Cannot handle pressing CTRL-C in a prompt buffer.
Solution:   Add prompt_setinterrupt().
https://github.com/vim/vim/commit/0e5979a6d491f68c4a8c86fab489016919329a6b

1 files changed, 25 insertions, 0 deletions

diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c
index a89d62fdfd..48e2ef8c51 100644
--- a/src/nvim/eval/funcs.c
+++ b/src/nvim/eval/funcs.c
@@ -6101,6 +6101,31 @@ static void f_prompt_setcallback(typval_T *argvars,
     buf->b_prompt_callback = prompt_callback;
 }
 
+// "prompt_setinterrupt({buffer}, {callback})" function
+static void f_prompt_setinterrupt(typval_T *argvars,
+                                  typval_T *rettv, FunPtr fptr)
+{
+    buf_T *buf;
+    Callback interrupt_callback = { .type = kCallbackNone };
+
+    if (check_secure()) {
+      return;
+    }
+    buf = tv_get_buf(&argvars[0], false);
+    if (buf == NULL) {
+      return;
+    }
+
+    if (argvars[1].v_type != VAR_STRING || *argvars[1].vval.v_string != NUL) {
+      if (!callback_from_typval(&interrupt_callback, &argvars[1])) {
+        return;
+      }
+    }
+
+    callback_free(&buf->b_prompt_interrupt);
+    buf->b_prompt_interrupt= interrupt_callback;
+}
+
 // "prompt_setprompt({buffer}, {text})" function
 static void f_prompt_setprompt(typval_T *argvars,
                                typval_T *rettv, FunPtr fptr)