patch 9.0.0051: using CTRL-C wih :append may hang Vim
Problem: Using CTRL-C wih :append may hang Vim.
Solution: Reset got_int. (closes #10729, closes #10728)
diff --git a/src/ex_getln.c b/src/ex_getln.c
index 8dc03dc..dd53894 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -1786,6 +1786,8 @@
// that occurs while typing a command should
// cause the command not to be executed.
+ got_int = FALSE; // avoid infinite Ctrl-C loop in Ex mode
+
// Trigger SafeState if nothing is pending.
may_trigger_safestate(xpc.xp_numfiles <= 0);
diff --git a/src/testdir/test_ex_mode.vim b/src/testdir/test_ex_mode.vim
index fafdda8..50bc1db 100644
--- a/src/testdir/test_ex_mode.vim
+++ b/src/testdir/test_ex_mode.vim
@@ -145,6 +145,29 @@
bwipe!
endfunc
+" Test for pressing Ctrl-C in :append inside a loop in Ex mode
+" This used to hang Vim
+func Test_Ex_append_in_loop()
+ CheckRunVimInTerminal
+ let buf = RunVimInTerminal('', {'rows': 6})
+
+ call term_sendkeys(buf, "gQ")
+ call term_sendkeys(buf, "for i in range(1)\<CR>")
+ call term_sendkeys(buf, "append\<CR>")
+ call WaitForAssert({-> assert_match(': append', term_getline(buf, 5))}, 1000)
+ call term_sendkeys(buf, "\<C-C>")
+ call term_wait(buf)
+ call term_sendkeys(buf, "foo\<CR>")
+ call WaitForAssert({-> assert_match('foo', term_getline(buf, 5))}, 1000)
+ call term_sendkeys(buf, ".\<CR>")
+ call WaitForAssert({-> assert_match('.', term_getline(buf, 5))}, 1000)
+ call term_sendkeys(buf, "endfor\<CR>")
+ call term_sendkeys(buf, "vi\<CR>")
+ call WaitForAssert({-> assert_match('foo', term_getline(buf, 1))}, 1000)
+
+ call StopVimInTerminal(buf)
+endfunc
+
" In Ex-mode, a backslash escapes a newline
func Test_Ex_escape_enter()
call feedkeys("gQlet l = \"a\\\<kEnter>b\"\<cr>vi\<cr>", 'xt')
diff --git a/src/version.c b/src/version.c
index 8df4341..a6a80b6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -736,6 +736,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 51,
+/**/
50,
/**/
49,