Regular expressions

Hi Russell,

Do you have the latest build? It seems to work fine in the current build. We recently made an fix to alternation code for the regex engine which was added one or two builds ago I believe.

Hi

Yes, I'm using 181. Try the following with ABC xx XYZ xx. I get blue red blue red. Change ABC|XYZ to (ABC)|(XYZ) and I get all red. I'm perfectly happy to accept I'm missing something here, but what?

Thanks
Russell Mason

<SyntaxLanguage Key="SQL" LanguageDefinitionVersion="3.0" Secure="True" WordContainsAdditionalCharacters="@_" xmlns="http://ActiproSoftware/SyntaxEditor/3.0/LanguageDefinition">

<Styles>
<Style Key="A" ForeColor="Blue" BackColor="Default" Bold="False" Italic="False" Underline="False" />
<Style Key="B" ForeColor="Red" BackColor="Default" Bold="False" Italic="False" Underline="False" />
</Styles>

<States>
<State Key="DefaultState">
<PatternGroups>
<RegexPatternGroup TokenKey="OrIdentifierToken" PatternValue="ABC|XYZ" Style="A" />
<RegexPatternGroup TokenKey="IdentifierToken" PatternValue="{AlphaMacro}({WordMacro})*" LookAhead="{NonWordMacro}" Style="B" />
</PatternGroups>
</State>
</States>

</SyntaxLanguage>

Thanks for the sample, I can repro it now. From your first post I did a find using the regular expression and it finds either ABC or XYZ fine with either method. Since the lexical parser uses the same regex code as the find/replace model, both should operate the same but they are not for some reason. I'll look into it.

Ok, found the issue. It was due to a bug in the pattern optimization code for lexical parsing. It's fixed for the next maintenance release.