[bug#29951] [PATCH] WIP guix: Add wrap-script.

[Chris Marusich]

Hi Ricardo,

Thank you for taking the time to explain it!

Ricardo Wurmus <address@hidden> writes:

> [...]  This line:
>
> #\-(begin (let …) …)
>
> is really just two Scheme values: a single arbitrary character and the
> S-expression that we care about.  We only care about the side-effects of
> evaluating the S-expression.

I understand now.  We're reading the hyphen symbol, and not doing
anything with it.  Got it!

> The advantage of this approach is: we don’t have to rename wrapped
> scripts any more (“.foo-real”), which makes for prettier usage messages
> (“Usage: foo -v” instead of “Usage: .foo-real -v”) and avoids problems
> when an application checks its own name to determine what actions it
> should take.

Sounds great!

-- 
Chris

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