From 07a182c6b57e13e2563aef667131b976db8711cc Mon Sep 17 00:00:00 2001 From: Jan Edmund Lazo Date: Sun, 14 Apr 2019 22:34:58 -0400 Subject: vim-patch:8.0.0647: syntax highlighting can make cause a freeze Problem: Syntax highlighting can make cause a freeze. Solution: Apply 'redrawtime' to syntax highlighting, per window. https://github.com/vim/vim/commit/06f1ed2f78c5c03af95054fc3a8665df39dec362 --- src/nvim/testdir/test_syntax.vim | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'src/nvim/testdir/test_syntax.vim') diff --git a/src/nvim/testdir/test_syntax.vim b/src/nvim/testdir/test_syntax.vim index 6978faeb7b..850947f89f 100644 --- a/src/nvim/testdir/test_syntax.vim +++ b/src/nvim/testdir/test_syntax.vim @@ -503,3 +503,37 @@ func Test_syn_wrong_z_one() " call test_override("ALL", 0) bwipe! endfunc + +func Test_syntax_hangs() + if !has('reltime') || !has('float') || !has('syntax') + return + endif + + " This pattern takes a long time to match, it should timeout. + new + call setline(1, ['aaa', repeat('abc ', 1000), 'ccc']) + let start = reltime() + set nolazyredraw redrawtime=101 + syn match Error /\%#=1a*.*X\@<=b*/ + redraw + let elapsed = reltimefloat(reltime(start)) + call assert_true(elapsed > 0.1) + call assert_true(elapsed < 1.0) + + " second time syntax HL is disabled + let start = reltime() + redraw + let elapsed = reltimefloat(reltime(start)) + call assert_true(elapsed < 0.1) + + " after CTRL-L the timeout flag is reset + let start = reltime() + exe "normal \" + redraw + let elapsed = reltimefloat(reltime(start)) + call assert_true(elapsed > 0.1) + call assert_true(elapsed < 1.0) + + set redrawtime& + bwipe! +endfunc -- cgit