Syntax highlighting the attached file spends (on my computer) 72 seconds processing the unanchored yamlBlockMappingKey pattern. With 'set re=1', it only takes .23 seconds.
Applying the below patch reduces the time with 'set re=0' to .01
seconds, but I'm not familiar enough with YAML's syntax to know if that
breaks something.
diff --git a/runtime/syntax/yaml.vim b/runtime/syntax/yaml.vim
--- a/runtime/syntax/yaml.vim
+++ b/runtime/syntax/yaml.vim
@@ -108,9 +108,7 @@
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\|$\)/ '.
- \'nextgroup=yamlKeyValueDelimiter'
-execute 'syn match yamlBlockMappingKey
/\s*\zs'.s:ns_plain_out.'\ze\s*:\%(\s\|$\)/ contained '.
+execute 'syn match yamlBlockMappingKey
/\%(^\s*\|\s\+\)\zs'.s:ns_plain_out.'\ze\s*:\%(\s\|$\)/ '.
\'nextgroup=yamlKeyValueDelimiter'
syn match yamlBlockMappingMerge /^\s*\zs<<\ze:\%(\s\|$\)/
nextgroup=yamlKeyValueDelimiter
syn match yamlBlockMappingMerge /<<\ze\s*:\%(\s\|$\)/
nextgroup=yamlKeyValueDelimiter contained
Cheers,
--
James
GPG Key: 4096R/331BA3DB 2011-12-05 James McCoy <james...@jamessan.com>
- ssh-rsa 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 jamessan@cerberus
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