Hi ":help todo.txt" contains this item:
=== This line hangs Vim, because of syntax HL: call append(line, "INFO ....12....18....24....30....36....42....48....54....60....66....72....78%$") === It does not really hangs, it's just very very slow. With a shorter string, you can see it being slow without hanging, but it gets very slow with long string. I found that it happens because of the vimFunc regexp in runtime/syntax/vim.vim which causes a backtracking explosion with consecutive dots I think. If I replace ... \%([a-zA-Z0-9_.]\+\.\) ... into... \%([a-zA-Z0-9_]\+\.\) ... then syntax highlighting is instantaneous. See attached patch. I'm not sure whether there are side effects. So perhaps there is a better way to fix it. But patch should at least help to diagnose the issue. I CC Charles who maintains the vim.vim syntax file for review. Regards -- Dominique -- You received this message from the "vim_dev" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php
fix-slow-syntax-highlight-vim.vim-7.3.633.patch
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