RegEx groupCount varies between JavaScript vs Dart. #11674
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This comment was originally written by demis.b...@gmail.com The issue is with the last group which is visible when increasing the group by 1, e.g: for (var i=0; i<=m.groupCount; i++) //Dart: [/path.to/.file, /, path.to/, .file, .file] |
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This comment was originally written by demis.b...@gmail.com Sorry this error is when running in the latest DartVM, I get the same results as JS when running on http://try.dartlang.org |
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There seems to be no difference now. Added AssumedStale label. |
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This issue was originally filed by demis.bell...@gmail.com
Dart only returns 4 groups whilst the same RegEx in JS returns 5 groups:
//Dart
var splitPathRe =
new RegExp(r"^(/?|)([\s\S]?)((?:.{1,2}|[^\/]+?|)(.[^.\/]|))(?:[/]*)$");
main(){
Match m = splitPathRe.firstMatch('/path.to/.file');
print(m.groupCount); //4
var groups = [];
for (var i=0; i<m.groupCount; i++)
groups.add(i);
print(m.groups(groups)); //[/path.to/.file, /, path.to/, .file]
}
/* JavaScript:
/^(/?|)([\s\S]?)((?:.{1,2}|[^\/]+?|)(.[^.\/]|))(?:[/]*)$/.exec('/path.to/.file')
//["/path.to/.file", "/", "path.to/", ".file", ""] //length = 5
*/
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