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Re: [RFC/PATCH] diff: simplify cpp funcname regex

From
Johannes Sixt <j.sixt@viscovery.net>
Date
Mar 18, 2014, 08:02 UTC
Message-ID
<5327FD81.4040508@viscovery.net>
In-Reply-To
<20140318052456.GA17454@sigill.intra.peff.net>
Cc René; do you have any comments regarding grep --function-context?
Am 3/18/2014 6:24, schrieb Jeff King:
Show 53 quoted lines
> On Fri, Mar 14, 2014 at 07:56:46AM +0100, Johannes Sixt wrote:
> 
>> Consider this code:
>>
>>   void above()
>>   {}
>>   static int Y;
>>   static int A;
>>   int bar()
>>   {
>>     return X;
>>   }
>>   void below()
>>   {}
> 
> Thanks, this example is very helpful.
> 
>> When you 'git grep --function-context X', then you get this output with
>> the current pattern, you proposal, and my proposal (file name etc omitted
>> for brevity):
>>
>>   int bar()
>>   {
>>     return X;
>>   }
> 
> Right, that makes sense to me.
> 
>> When you 'git grep --function-context Y', what do you want to see? With
>> the current pattern, and with your pattern that forbids semicolon we get:
>>
>>   void above()
>>   {}
>>   static int Y;
>>   static int A;
>>
>> and with my simple pattern, which allows semicolon, we get merely
>>
>>   static int Y;
>>
>> because the line itself is a hunk header (and we do not look back any
>> further) and the next line is as well. That is not exactly "function
>> context", and that is what I'm a bit worried about.
> 
> Hmm. To be honest, I do not see yours as all that bad. Is "above()" or
> "A" actually interesting here? I'm not sure that they are. But then I do
> not use --function-context myself.
> 
> I guess it violates the "show things that are vaguely nearby, rather
> than a container" view of context that we discussed earlier. But somehow
> that seems less important to me with "--function-context".
> 
> So I dunno. I kind of like your version.

Then I'll polish my patch series (it also rewrites the test framework) and post it.

-- Hannes
Previous: Jeff KingNext: René Scharfe
Message 8 of 30 in “diff: simplify cpp funcname regex”
  1. diff: simplify cpp funcname regexJeff King, Mar 5, 2014
  2. Johannes SixtMar 5, 2014
  3. Jeff KingMar 6, 2014
  4. Johannes SixtMar 7, 2014
  5. Jeff KingMar 14, 2014
  6. Johannes SixtMar 14, 2014
  7. Jeff KingMar 18, 2014
  8. Johannes SixtMar 18, 2014
  9. René ScharfeMar 18, 2014
  10. 00/10 userdiff: cpp pattern simplification and test frameworkJohannes Sixt, Mar 21, 2014
  11. 01/10 userdiff: support C++ ->* and .* operators in the word regexpJohannes Sixt, Mar 21, 2014
  12. 02/10 userdiff: support unsigned and long long suffixes of integer constantsJohannes Sixt, Mar 21, 2014
  13. 03/10 t4018: an infrastructure to test hunk headersJohannes Sixt, Mar 21, 2014
  14. Junio C HamanoMar 21, 2014
  15. Johannes SixtMar 22, 2014
  16. Junio C HamanoMar 23, 2014
  17. Jeff KingMar 24, 2014
  18. Jeff KingMar 24, 2014
  19. Johannes SixtMar 25, 2014
  20. Jeff KingMar 25, 2014
  21. 04/10 t4018: convert perl pattern tests to the new infrastructureJohannes Sixt, Mar 21, 2014
  22. 05/10 t4018: convert java pattern test to the new infrastructureJohannes Sixt, Mar 21, 2014
  23. 06/10 t4018: convert custom pattern test to the new infrastructureJohannes Sixt, Mar 21, 2014
  24. 07/10 t4018: reduce test files for pattern compilation testsJohannes Sixt, Mar 21, 2014
  25. 08/10 t4018: test cases for the built-in cpp patternJohannes Sixt, Mar 21, 2014
  26. 09/10 t4018: test cases showing that the cpp pattern misses many anchor pointsJohannes Sixt, Mar 21, 2014
  27. 10/10 userdiff: have 'cpp' hunk header pattern catch more C++ anchor pointsJohannes Sixt, Mar 21, 2014
  28. Junio C HamanoMar 21, 2014
  29. Jeff KingMar 24, 2014
  30. Junio C HamanoMar 5, 2014

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