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Re: [PATCH] gnu-maintenance: update-package-source: Only update the desi


From: Ludovic Courtès
Subject: Re: [PATCH] gnu-maintenance: update-package-source: Only update the desired package.
Date: Tue, 05 Apr 2016 22:20:58 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)

Andy Wingo <address@hidden> skribis:

> In that case I think the ideal is something like "edit-expression",
> which takes a source location that starts an expression, uses "read" to
> advance to the end of the expression, then edits the intervening string
> using whatever but verifies that the result can still be read as one
> expression.  Having recorded the absolute byte positions of the start
> and end of the expression, you can then create the output by doing an
> efficient bytevector read of the prologue, then display the string for
> the edited expression, then the bytevector tail.

Indeed, that sounds like the right abstraction!

Thanks,
Ludo’.



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