Patch proposal - resetting the file and line

[Raphael 'kena' Poss]

Hi all,

today marks the 5th anniversary of my GNU m4 extension which has already been 
used in production in various projects: the ability to reset the value of 
__file__ and __line__, a feature which we use here to get meaningful error 
messages when using m4 behind another preprocessor.

Let me mark this anniversary by proposing (once again) this patch for 
integration in the project -- this time as a diff against branch-1.4. I would 
be sincerely grateful if this was merged, as it would measurably reduce the 
complexity of our software distribution pipeline.

Best regards,

-- 
Raphael 'kena' Poss · address@hidden
http://science.raphael.poss.name/

0001-Add-support-for-resetting-__file__-and-__line__.patch
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