bug#47804: [PATCH] lint: Warn about underscores in package names.

[Ludovic Courtès]

Hi,

Xinglu Chen <public@yoctocell.xyz> skribis:

> As per section '16.4.2 Package Naming' in the manual, use hyphens
> instead of underscores in package names.
>
> * guix/lint.scm (check-name): Check whether the package name contains
> underscores.
> * tests/lint.scm ("name: use underscore in package name"): New test.

Applied with the minor change below, which avoids regexps
(‘string-match’ performs regexp matches, which is overkill here).

Thank you and thanks Maxime for the review!

Ludo’.

diff --git a/guix/lint.scm b/guix/lint.scm
index 38699e2927..1bebfe03d3 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -183,7 +183,7 @@
        (make-warning package
                      (G_ "name should be longer than a single character")
                      #:field 'name)))
-     ((string-match "_" name)
+     ((string-index name #\_)
       (list
        (make-warning package
                      (G_ "name should use hyphens instead of underscores")