patch 9.1.1176: wrong indent when expanding multiple lines

Problem:  wrong indentation of lastline when expanding multiple lines
Solution: Check OPENLINE_FORCE_INDENT flag in open_line() (glepnir)

closes: #16786

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/change.c

@@ -1672,7 +1672,8 @@ open_line(
 		)
 	    && in_cinkeys(dir == FORWARD
 		? KEY_OPEN_FORW
-		: KEY_OPEN_BACK, ' ', linewhite(curwin->w_cursor.lnum));
+		: KEY_OPEN_BACK, ' ', linewhite(curwin->w_cursor.lnum))
+	    && !(flags & OPENLINE_FORCE_INDENT);
 
     // Find out if the current line starts with a comment leader.
     // This may then be inserted in front of the new line.

src/testdir/dumps/Test_pum_with_special_characters_13.dump

@@ -0,0 +1,12 @@
+|m+0#ff404010#ffffff0|y| +0#0000000&@72
+| +0#ff404010&@7|m|u|l|t|i| +0#0000000&@61
+|l+0#ff404010&|i|n|e> +0#0000000&@70
+|m+0#0000001#e0e0e08|y|^|@| @1|m|u|l|t|i|^|@|l|i|n|e| @2| +0#4040ff13#ffffff0@54
+|m+0#0000001#ffd7ff255|y|^|@| @3|m|u|l|t|i|^|@|l|i|n|e| | +0#4040ff13#ffffff0@54
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|-+2#0000000&@1| |I|N|S|E|R|T| |-@1| +0&&@62

src/testdir/test_popup.vim

@@ -1905,6 +1905,7 @@ func Test_pum_complete_with_special_characters()
       return [#{word: "func ()\n\t\nend", abbr: "function ()",}, #{word: "foobar"}, #{word: "你好\n\t\n我好"}]
     endfunc
     set omnifunc=Omni_test
+    inoremap <F5> <Cmd>call complete(col('.'), [ "my\n\tmulti\nline", "my\n\t\tmulti\nline" ])<CR>
   END
 
   call writefile(lines, 'Xpreviewscript', 'D')
@@ -1963,6 +1964,14 @@ func Test_pum_complete_with_special_characters()
   call TermWait(buf, 50)
   call VerifyScreenDump(buf, 'Test_pum_with_special_characters_12', {})
 
+  call term_sendkeys(buf, "\<ESC>ggVGd")
+  call term_sendkeys(buf, ":filetype indent on\<CR>")
+  call term_sendkeys(buf, ":set nocompatible autoindent& shiftwidth& tabstop&\<CR>")
+  call term_sendkeys(buf, ":setlocal ft=lua\<CR>")
+  call term_sendkeys(buf, "S\<F5>")
+  call TermWait(buf, 50)
+  call VerifyScreenDump(buf, 'Test_pum_with_special_characters_13', {})
+
   call StopVimInTerminal(buf)
 endfunc
 

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1176,
 /**/
     1175,
 /**/