File vim-speedup-yaml.patch of Package vim.4063

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File vim-speedup-yaml.patch of Package vim.4063

Index: vim74/runtime/syntax/yaml.vim
===================================================================
--- vim74.orig/runtime/syntax/yaml.vim
+++ vim74/runtime/syntax/yaml.vim
@@ -103,14 +136,15 @@ execute 'syn match yamlPlainScalar conta
 syn match yamlMappingKeyStart '?\ze\s'
 syn match yamlMappingKeyStart '?' contained
 
-execute 'syn match yamlFlowMappingKey /'.s:ns_plain_in.'\ze\s*:/ contained '.
+execute 'syn match yamlFlowMappingKey /\%#=1'.s:ns_plain_in.'\%(\s\+'.s:ns_plain_in.'\)*\ze\s*:/ contained '.
             \'nextgroup=yamlKeyValueDelimiter'
 syn match yamlFlowMappingMerge /<<\ze\s*:/ contained nextgroup=yamlKeyValueDelimiter
 
 syn match yamlBlockCollectionItemStart '^\s*\zs-\%(\s\+-\)*\s' nextgroup=yamlBlockMappingKey,yamlBlockMappingMerge
-execute 'syn match yamlBlockMappingKey /^\s*\zs'.s:ns_plain_out.'\ze\s*:\%(\s\|$\)/ '.
+" Use the old regexp engine, the NFA engine doesn't like all the \@ items.
+execute 'syn match yamlBlockMappingKey /\%#=1^\s*\zs'.s:ns_plain_out.'\%(\s\+'.s:ns_plain_out.'\)*\ze\s*:\%(\s\|$\)/ '.
             \'nextgroup=yamlKeyValueDelimiter'
-execute 'syn match yamlBlockMappingKey /\s*\zs'.s:ns_plain_out.'\ze\s*:\%(\s\|$\)/ contained '.
+execute 'syn match yamlBlockMappingKey /\%#=1\s*\zs'.s:ns_plain_out.'\%(\s\+'.s:ns_plain_out.'\)*\ze\s*:\%(\s\|$\)/ contained '.
             \'nextgroup=yamlKeyValueDelimiter'
 syn match yamlBlockMappingMerge /^\s*\zs<<\ze:\%(\s\|$\)/ nextgroup=yamlKeyValueDelimiter
 syn match yamlBlockMappingMerge /<<\ze\s*:\%(\s\|$\)/ nextgroup=yamlKeyValueDelimiter contained

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File vim-speedup-yaml.patch of Package vim.4063

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