Review Request 114746: [calculator runner] Replace regexp with explicit character category check

[Commit Hook]

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This review has been submitted with commit efbfaf681cd49994858b364155cd2b42a5c6d963 by Christoph Feck to branch KDE/4.11.

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On Dec. 31, 2013, 3:06 a.m., Christoph Feck wrote:
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> (Updated Dec. 31, 2013, 3:06 a.m.)
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> Review request for Plasma.
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> Bugs: 321803
>     http://bugs.kde.org/show_bug.cgi?id=321803
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> Repository: kde-workspace
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> Description
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> The current calculator krunner checks for textual input using a simple [a-zA-Z] regexp, which is going to fail for non-latin letters. Instead of increasing regexp complexity, I simply use the QChar category functions to check for letters.
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> Additionally, any input non consisting of at least a single digit requires the leading or trailing '=' sign, to avoid matches on pure symbol input, such as "(!)" or whatever.
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> Diffs
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>   plasma/generic/runners/calculator/calculatorrunner.h 3a031e0 
>   plasma/generic/runners/calculator/calculatorrunner.cpp 8d00449 
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> Diff: https://git.reviewboard.kde.org/r/114746/diff/
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> Testing
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> Thanks,
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> Christoph Feck
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