runtime(ssa): improve syntax file performance (#14654)

fixes: #14653

Signed-off-by: ObserverOfTime <chronobserver@disroot.org>
Signed-off-by: Christian Brabandt <cb@256bit.org>

diff --git a/runtime/syntax/ssa.vim b/runtime/syntax/ssa.vim
index a5dbf37c307e93908aa410c999c6e98a9101a200..3cfae816ffea23aaa17e4f1912acea620f6e3f2e 100644 (file)
--- a/runtime/syntax/ssa.vim
+++ b/runtime/syntax/ssa.vim
@@ -2,7 +2,7 @@
 " Language:    SubStation Alpha
 " Maintainer:  ObserverOfTime <chronobserver@disroot.org>
 " Filenames:   *.ass,*.ssa
-" Last Change: 2022 Oct 10
+" Last Change: 2024 Apr 28
 
 if exists('b:current_syntax')
     finish
@@ -20,16 +20,20 @@ syn match ssaSection /^\[[a-zA-Z0-9+ ]\+\]$/
 syn match ssaHeader /^[^;!:]\+:/ skipwhite nextgroup=ssaField
 
 " Fields
-syn match ssaField /[^,]*/ contained skipwhite nextgroup=ssaDelimiter
+syn match ssaField /[^,]*\(,\|$\)/ contained skipwhite contains=ssaDelimiter,ssaTime nextgroup=ssaField
 
 " Time
-syn match ssaTime /\d:\d\d:\d\d\.\d\d/ contained skipwhite nextgroup=ssaDelimiter
+syn match ssaTime /\d:\d\d:\d\d\.\d\d/ contained
 
 " Delimiter
-syn match ssaDelimiter /,/ contained skipwhite nextgroup=ssaField,ssaTime,ssaText
+syn match ssaDelimiter /,/ contained
+
+" Dialogue
+syn match ssaDialogue /^Dialogue:/ transparent skipwhite nextgroup=ssaDialogueFields
+syn match ssaDialogueFields /\([^,]*,\)\{9\}/ contained transparent skipwhite contains=ssaField,ssaDelimiter nextgroup=ssaText
 
 " Text
-syn match ssaText /\(^Dialogue:\(.*,\)\{9}\)\@<=.*$/ contained contains=@ssaTags,@Spell
+syn match ssaText /.*$/ contained contains=@ssaTags,@Spell
 syn cluster ssaTags contains=ssaOverrideTag,ssaEscapeChar,ssaTextComment,ssaItalics,ssaBold,ssaUnderline,ssaStrikeout
 
 " Override tags
@@ -60,4 +64,4 @@ hi ssaItalics cterm=italic gui=italic
 hi ssaStrikeout cterm=strikethrough gui=strikethrough
 hi ssaUnderline cterm=underline gui=underline
 
-let b:current_syntax = 'srt'
+let b:current_syntax = 'ssa'