Translations:Development/KDevelop-PG-Qt Introduction/184/en: Difference between revisions

Latest revision as of 09:55, 10 February 2019

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There is rudimentary support for ''lookahead'' and so called (our invention) ''barriers'':
{{Input|1=
⟨regular expression⟩ %la(⟨regular expression⟩);
⟨regular expression⟩ %ba(⟨regular expression⟩);
}}
The first rule will only accept words if they match the first regular expression and are followed by anything matching the expression specified using %la. The second rule will accept words matched by the first regular expression but will never run into a character sequence matching the regex specified by %ba. However, currently only rules with fixed length are allowed in %la and %ba (for example foo|bar, but not qux|garply). When applying the “first longest match” rule the %la/%ba expressions count, too.

There is rudimentary support for lookahead and so called (our invention) barriers:

⟨regular expression⟩ %la(⟨regular expression⟩);
⟨regular expression⟩ %ba(⟨regular expression⟩);

The first rule will only accept words if they match the first regular expression and are followed by anything matching the expression specified using %la. The second rule will accept words matched by the first regular expression but will never run into a character sequence matching the regex specified by %ba. However, currently only rules with fixed length are allowed in %la and %ba (for example foo|bar, but not qux|garply). When applying the “first longest match” rule the %la/%ba expressions count, too.