guix: lint: Allow digits at start of synopsis or description.

* guix/scripts/lint.scm (start-with-capital-letter?): Rename too...
  (properly-starts-sentence?): Rewrite with regex and add digits.
  (check-description-style, check-synopsis-style): Use it.
* tests/lint.scm: Add tests.

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/lint.scm b/tests/lint.scm
index b732a1826a..9557887e4f 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -63,6 +63,15 @@
                           (check-description-style pkg))))
                     "description should start with an upper-case letter")))
 
+(test-assert "description: may start with a digit"
+  (not
+   (string-contains (call-with-warnings
+                      (lambda ()
+                        (let ((pkg (dummy-package "x"
+                                     (description "2-component library."))))
+                          (check-description-style pkg))))
+                    "description should start with an upper-case letter")))
+
 (test-assert "description: two spaces after end of sentence"
   (->bool
    (string-contains (call-with-warnings
@@ -100,6 +109,15 @@
                           (check-synopsis-style pkg))))
                     "synopsis should start with an upper-case letter")))
 
+(test-assert "synopsis: may start with a digit"
+  (not
+   (string-contains (call-with-warnings
+                      (lambda ()
+                        (let ((pkg (dummy-package "x"
+                                     (synopsis "5-dimensional frobnicator"))))
+                          (check-synopsis-style pkg))))
+                    "synopsis should start with an upper-case letter")))
+
 (test-assert "synopsis: ends with a period"
   (->bool
    (string-contains (call-with-warnings