[bug#74459] [PATCH 0/8] Linter improvements (eliminate false positives)^[

[bug#74459] [PATCH 0/8] Linter improvements (eliminate false positives)^[

[Gabriel Wicki]

Hi there!

In my recent venture where i linted each and every packages' description and synopsis, I found quite a bunch of false positives.  These usually don't hurt when we lint single packages, but are quite annoying when linting all of them.  Hence I summed my findings up in some code improvements.

Have a nice week!

gabber

Gabriel Wicki (8):
  guix: lint: Fix indentation.
  guix: lint: Refine description start check logic.
  guix: lint: Allow texinfo markup at beginning of description.
  guix: lint: Allow texinfo markup at beginning of synopsis.
  guix: lint: Prevent false positives in description typo check.
  guix: lint: Ignore initials from double space check.
  guix: lint: More abbreviations.
  gnu: Move depending packages next to each other.

 gnu/packages/cpp.scm | 50 +++++++++++++++++------------------
 guix/lint.scm        | 56 +++++++++++++++++++++++++--------------
 tests/lint.scm       | 62 +++++++++++++++++++++++++++++++++++++-------
 3 files changed, 114 insertions(+), 54 deletions(-)


base-commit: 33665c52c4670bc3b4d337c89ac9cc6c4c69b26f
-- 
2.46.0

[bug#74459] [PATCH 1/8] guix: lint: Fix indentation.

[Gabriel Wicki]

* guix/lint.scm(check-synopsis-style): Add white space.
* tests/lint.scm: Fix indentation.
---
 guix/lint.scm  |  2 +-
 tests/lint.scm | 16 ++++++++--------
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 8c6c20c723..31d366af46 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -737,7 +737,7 @@ (define (check-synopsis-style package)
 
   (define (check-start-with-package-name synopsis)
     (if (and (regexp-exec (package-name-regexp package) synopsis)
-               (not (starts-with-abbreviation? synopsis)))
+             (not (starts-with-abbreviation? synopsis)))
         (list
          (make-warning package
                        (G_ "synopsis should not start with the package name")
diff --git a/tests/lint.scm b/tests/lint.scm
index 95d82d7490..b899ebc700 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -171,14 +171,14 @@ (define (warning-contains? str warnings)
   "description contains leading whitespace"
   (single-lint-warning-message
    (let ((pkg (dummy-package "x"
-                              (description " Whitespace."))))
+                             (description " Whitespace."))))
      (check-description-style pkg))))
 
 (test-equal "description: trailing whitespace"
   "description contains trailing whitespace"
   (single-lint-warning-message
    (let ((pkg (dummy-package "x"
-                              (description "Whitespace. "))))
+                             (description "Whitespace. "))))
      (check-description-style pkg))))
 
 (test-equal "description: pluralized 'This package'"
@@ -359,18 +359,18 @@ (define (warning-contains? str warnings)
   '()
   (check-compiler-for-target
    (dummy-package "x"
-		  (arguments
-		   (list #:make-flags
-			 #~(list (string-append "CC=" (cc-for-target))))))))
+                  (arguments
+                   (list #:make-flags
+                         #~(list (string-append "CC=" (cc-for-target))))))))
 
 (test-equal "compiler-for-target: CC=gcc is acceptable when target=#false"
   '()
   (check-compiler-for-target
    ;; This (dummy) package consists purely of architecture-independent data.
    (dummy-package "tzdata"
-		  (arguments
-		   (list #:target #false
-			 #:make-flags #~(list "CC=gcc"))))))
+                  (arguments
+                   (list #:target #false
+                         #:make-flags #~(list "CC=gcc"))))))
 
 ;; The emacs-build-system sets #:tests? #f by default.
 (test-equal "tests-true: #:tests? #t acceptable for emacs packages"
-- 
2.46.0

[bug#74459] [PATCH 2/8] guix: lint: Refine description start check logic.

[Gabriel Wicki]

Fix linter warnings for the following:

 - packages that belong to some programming language or ecosystem,
 e.g. python-foo or texlive-bar,
 - packages whose names end in a version distinction, e.g. wlroots-0.16 and
 - packages where the software's real name contains an underscore `_'
 character where our package name replaced that with a hyphen `-',
 e.g. wpa_supplicant and wpa-supplicant-minimal.

* guix/lint.scm (check-description-style)[check-proper-start]: Add conditions.
* tests/lint.scm: New tests.

Change-Id: Ifc9f5cda04db59e460e287cd93afae89c7f17e3c
---
 guix/lint.scm  | 24 +++++++++++++++---------
 tests/lint.scm | 25 +++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 9 deletions(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 31d366af46..39edf93219 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -14,6 +14,7 @@
 ;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
 ;;; Copyright © 2021-2023 Maxime Devos <maximedevos@telenet.be>
 ;;; Copyright © 2021 Brice Waegeneire <brice@waegenei.re>
+;;; Copyright © 2024 Gabriel Wicki <gabriel@erlikon.ch>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -437,15 +438,20 @@ (define (check-description-style package)
         '()))
 
   (define (check-proper-start description)
-    (if (or (string-null? description)
-            (properly-starts-sentence? description)
-            (string-prefix-ci? (package-name package) description))
-        '()
-        (list
-         (make-warning
-          package
-          (G_ "description should start with an upper-case letter or digit")
-          #:field 'description))))
+    (let* ((initial (car (string-split description #\space)))
+           (first-word
+            (regexp-substitute/global #f "_" initial
+                                      'pre "-" 'post)))
+      (if (or (string-null? description)
+              (properly-starts-sentence? description)
+              (string-prefix-ci? first-word (package-name package))
+              (string-suffix-ci? first-word (package-name package)))
+          '()
+          (list
+           (make-warning
+            package
+            (G_ "description should start with an upper-case letter or digit")
+            #:field 'description)))))
 
   (define (check-end-of-sentence-space description)
     "Check that an end-of-sentence period is followed by two spaces."
diff --git a/tests/lint.scm b/tests/lint.scm
index b899ebc700..9297bfbaac 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -11,6 +11,7 @@
 ;;; Copyright © 2020 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
 ;;; Copyright © 2021, 2023 Maxime Devos <maximedevos@telenet.be>
+;;; Copyright © 2024 Gabriel Wicki <gabriel@erlikon.ch>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -132,6 +133,30 @@ (define (warning-contains? str warnings)
                             (description "x is a dummy package."))))
     (check-description-style pkg)))
 
+(test-equal "description: may start with beginning of package name"
+  '()
+  (let ((pkg (dummy-package "xyz-0.1"
+                            (description "xyz is a dummy package."))))
+    (check-description-style pkg)))
+
+(test-equal "description: may start with end of package name"
+  '()
+  (let ((pkg (dummy-package "foobar-xyz"
+                            (description "xyz is a dummy package."))))
+    (check-description-style pkg)))
+
+(test-equal "description: may start with non-hyphenated package name"
+  '()
+  (let ((pkg (dummy-package "foobar-xyz-minimal"
+                            (description "foobar_xyz is a dummy package."))))
+    (check-description-style pkg)))
+
+(test-equal "description: may start with end of package name"
+  '()
+  (let ((pkg (dummy-package "foo-bar"
+                            (description "bar is some thing in foo."))))
+    (check-description-style pkg)))
+
 (test-equal "description: two spaces after end of sentence"
   "sentences in description should be followed by two spaces; possible infraction at 3"
   (single-lint-warning-message
-- 
2.46.0

[bug#74459] [PATCH 2/8] guix: lint: Refine description start check logic.

[Ludovic Courtès]

Hi,

Gabriel Wicki <gabriel@erlikon.ch> skribis:

> Fix linter warnings for the following:
>
>  - packages that belong to some programming language or ecosystem,
>  e.g. python-foo or texlive-bar,
>  - packages whose names end in a version distinction, e.g. wlroots-0.16 and
>  - packages where the software's real name contains an underscore `_'
>  character where our package name replaced that with a hyphen `-',
>  e.g. wpa_supplicant and wpa-supplicant-minimal.
>
> * guix/lint.scm (check-description-style)[check-proper-start]: Add conditions.
> * tests/lint.scm: New tests.
>
> Change-Id: Ifc9f5cda04db59e460e287cd93afae89c7f17e3c

[...]

>    (define (check-proper-start description)
> -    (if (or (string-null? description)
> -            (properly-starts-sentence? description)
> -            (string-prefix-ci? (package-name package) description))
> -        '()
> -        (list
> -         (make-warning
> -          package
> -          (G_ "description should start with an upper-case letter or digit")
> -          #:field 'description))))
> +    (let* ((initial (car (string-split description #\space)))

In general we try to avoid ‘car’ and ‘cdr’:

  https://guix.gnu.org/manual/devel/en/html_node/Data-Types-and-Pattern-Matching.html

But also, instead of traversing all of ‘description’, perhaps you could
have something like (untested):

  (define (first-word str)
    (let* ((str (string-trim str))
           (length (or (and=> (string-index str #\space) 1+) (string-length str))))
      (string-take str length)))

Ludo’.

[bug#74459] [PATCH 3/8] guix: lint: Allow texinfo markup at beginning of description.

[Gabriel Wicki]

* guix/lint.scm(starts-with-texinfo-markup?): New function.
(check-description-style)[check-proper-start]: Add condition.
* tests/lint.scm: Add test case.

Change-Id: I674988882265d9e2041d48dba0f9627cd68bf292
---
 guix/lint.scm  | 8 +++++++-
 tests/lint.scm | 5 +++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 39edf93219..4ea02a7faa 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -370,6 +370,9 @@ (define (check-compiler-for-target package)
 (define (properly-starts-sentence? s)
   (string-match "^[(\"'`[:upper:][:digit:]]" s))
 
+(define (starts-with-texinfo-markup? s)
+  (string-match "^@(acronym|dfn|code|command|emph|file|quotation|samp|uref|url)\\{.*?\\}" s))
+
 (define (starts-with-abbreviation? s)
   "Return #t if S starts with what looks like an abbreviation or acronym."
   (string-match "^[A-Z][A-Z0-9]+\\>" s))
@@ -444,6 +447,7 @@ (define (check-description-style package)
                                       'pre "-" 'post)))
       (if (or (string-null? description)
               (properly-starts-sentence? description)
+              (starts-with-texinfo-markup? description)
               (string-prefix-ci? first-word (package-name package))
               (string-suffix-ci? first-word (package-name package)))
           '()
@@ -510,7 +514,9 @@ (define (check-description-style package)
          (match (check-texinfo-markup description)
            ((and warning (? lint-warning?)) (list warning))
            (plain-description
-            (check-proper-start plain-description))))
+            (if (string-prefix? "@" description)
+                '()
+                (check-proper-start plain-description)))))
         (list
          (make-warning package
                        (G_ "invalid description: ~s")
diff --git a/tests/lint.scm b/tests/lint.scm
index 9297bfbaac..df7042c470 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -121,6 +121,11 @@ (define (warning-contains? str warnings)
                              (description "bad description."))))
      (check-description-style pkg))))
 
+(test-equal "description: may start with texinfo markup"
+  '()
+  (check-description-style
+   (dummy-package "x" (description "@emph{Maxwell Equations of Software}"))))
+
 (test-equal "description: may start with a digit"
   '()
   (let ((pkg (dummy-package "x"
-- 
2.46.0

[bug#74459] [PATCH 4/8] guix: lint: Allow texinfo markup at beginning of synopsis.

[Gabriel Wicki]

* guix/lint.scm(check-synopsis-style)[check-proper-start]: Add condition.
* tests/lint.scm: Add test case.

Change-Id: I2509b3a4e7e51c6a274697ceb5f776c22e27c5f9
---
 guix/lint.scm  | 3 ++-
 tests/lint.scm | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 4ea02a7faa..9fa22c92cc 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -740,7 +740,8 @@ (define (check-synopsis-style package)
         '()))
 
   (define (check-proper-start synopsis)
-    (if (properly-starts-sentence? synopsis)
+    (if (or (properly-starts-sentence? synopsis)
+            (starts-with-texinfo-markup? synopsis))
         '()
         (list
          (make-warning package
diff --git a/tests/lint.scm b/tests/lint.scm
index df7042c470..6631034151 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -307,6 +307,12 @@ (define (warning-contains? str warnings)
       (check-synopsis-style pkg)))
    string<?))
 
+(test-equal "synopsis: starts with texinfo markup"
+  '()
+  (let ((pkg (dummy-package "x"
+                            (synopsis "@code{help}"))))
+    (check-synopsis-style pkg)))
+
 (test-equal "synopsis: too long"
   "synopsis should be less than 80 characters long"
   (single-lint-warning-message
-- 
2.46.0

[bug#74459] [PATCH 5/8] guix: lint: Prevent false positives in description typo check.

[Gabriel Wicki]

* guix/lint.scm(check-description-style)[check-description-typo]: Add spaces
to match strings to prevent matching false positives, like "allows tokens" or
"prevents torpedoes".
* tests/lint.scm: Add test.

Change-Id: Ifc2ec6167a590b9d2e742dd86fecd798c4bfaa24
---
 guix/lint.scm  | 4 ++--
 tests/lint.scm | 8 +++++++-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 9fa22c92cc..6122a9c8e3 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -504,8 +504,8 @@ (define (check-description-style package)
          (check-trademarks description)
          (check-description-typo description '(("This packages" . "This package")
                                                ("This modules" . "This module")
-                                               ("allows to" . #f)
-                                               ("permits to" . #f)))
+                                               ("allows to " . #f)
+                                               ("permits to " . #f)))
          ;; Use raw description for this because Texinfo rendering
          ;; automatically fixes end of sentence space.
          (check-end-of-sentence-space description)
diff --git a/tests/lint.scm b/tests/lint.scm
index 6631034151..47e31a69bf 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -219,12 +219,18 @@ (define (warning-contains? str warnings)
      (check-description-style pkg))))
 
 (test-equal "description: grammar 'allows to'"
-  "description contains typo 'allows to'"
+  "description contains typo 'allows to '"
   (single-lint-warning-message
    (let ((pkg (dummy-package "x"
                              (description "This package allows to do stuff."))))
      (check-description-style pkg))))
 
+(test-equal "description: grammar 'allows to' 2"
+  '()
+  (let ((pkg (dummy-package "x"
+                            (description "This package allows tokenization."))))
+    (check-description-style pkg)))
+
 (test-equal "synopsis: not a string"
   "invalid synopsis: #f"
   (single-lint-warning-message
-- 
2.46.0

[bug#74459] [PATCH 6/8] guix: lint: Ignore initials from double space check.

[Gabriel Wicki]

Prevent false positives in initials as the are commonly used in names, e.g.
Margaret E. Hamilton - which obviously do not end sentences.  Check whether a
period character `.' is preceded by at least two characters.  This should save
us from false positives when linting.

* guix/lint.scm(check-description-style)[check-end-of-sentence-space] Add
condition.
* tests/lint.scm: Add test case.

Change-Id: I42a1365aaaed2afc7308b88ebd4b0720ad362761
---
 guix/lint.scm  | 15 ++++++++++-----
 tests/lint.scm |  2 +-
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 6122a9c8e3..f2e8e95e61 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -463,11 +463,16 @@ (define (check-description-style package)
            (reverse (fold-matches
                      "\\. [A-Z]" description '()
                      (lambda (m r)
-                       ;; Filter out matches of common abbreviations.
-                       (if (find (lambda (s)
-                                   (string-suffix-ci? s (match:prefix m)))
-                                 '("i.e" "e.g" "a.k.a" "resp"))
-                           r (cons (match:start m) r)))))))
+                       ;; Filter out matches of common abbreviations and
+                       ;; initials.
+                       (let ((pre (match:prefix m)))
+                         (if (or
+                              (string-match "[A-Z]$" pre) ;; Initial found
+                              (find (lambda (s)
+                                      (string-suffix-ci? s pre))
+                                    '("i.e" "e.g" "a.k.a" "resp")))
+                             r
+                             (cons (match:start m) r))))))))
       (if (null? infractions)
           '()
           (list
diff --git a/tests/lint.scm b/tests/lint.scm
index 47e31a69bf..09be160f5d 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -173,7 +173,7 @@ (define (warning-contains? str warnings)
   '()
   (let ((pkg (dummy-package "x"
                             (description
-                             "E.g. Foo, i.e. Bar resp. Baz (a.k.a. DVD)."))))
+                             "E.g. Foo, i.e. Bar resp. Baz (a.k.a. DVD).  Name O. Person"))))
     (check-description-style pkg)))
 
 (test-equal "description: may not contain trademark signs: ™"
-- 
2.46.0

[bug#74459] [PATCH 7/8] guix: lint: More abbreviations.

[Gabriel Wicki]

* guix/lint.scm: Allow more common abbreviations in double-space-after
sentence check.
* tests/lint.scm: Add tests.

Change-Id: I0eedf73e5fcd0a8c67b3ae3dfa979a57fe0f6253
---
 guix/lint.scm  | 2 +-
 tests/lint.scm | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index f2e8e95e61..b1c8834c5f 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -470,7 +470,7 @@ (define (check-description-style package)
                               (string-match "[A-Z]$" pre) ;; Initial found
                               (find (lambda (s)
                                       (string-suffix-ci? s pre))
-                                    '("i.e" "e.g" "a.k.a" "resp")))
+                                    '("i.e" "e.g" "a.k.a" "resp" "cf" "al")))
                              r
                              (cons (match:start m) r))))))))
       (if (null? infractions)
diff --git a/tests/lint.scm b/tests/lint.scm
index 09be160f5d..3e9dbd29db 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -173,7 +173,7 @@ (define (warning-contains? str warnings)
   '()
   (let ((pkg (dummy-package "x"
                             (description
-                             "E.g. Foo, i.e. Bar resp. Baz (a.k.a. DVD).  Name O. Person"))))
+                             "O. Person e.g. Foo, i.e. Bar resp. Baz (a.k.a. DVD).  Name et al. cf. some paper."))))
     (check-description-style pkg)))
 
 (test-equal "description: may not contain trademark signs: ™"
-- 
2.46.0

[bug#74459] comments

[Gabriel Wicki]

some notes:  i failed when creating the series and included a
patch that is unrelated to the changes here.  should i send in a
revision?

and did the software just swallow my cover letter?

i was btw inspired to these changes when linting all package syopses and
descriptions (issue #74329)

[bug#74459] comments

[Ludovic Courtès]

Gabriel Wicki <gabriel@erlikon.ch> skribis:

> some notes:  i failed when creating the series and included a
> patch that is unrelated to the changes here.  should i send in a
> revision?
>
> and did the software just swallow my cover letter?
>
> i was btw inspired to these changes when linting all package syopses and
> descriptions (issue #74329)

I think it went well!

Apart from the minor suggestions I sent, it LGTM.

Could you send updated patches?

Thanks,
Ludo’.

[bug#74459] [PATCH v2 1/7] guix: lint: Fix indentation.

[Gabriel Wicki]

* guix/lint.scm(check-synopsis-style): Add white space.
* tests/lint.scm: Fix indentation.
---
 guix/lint.scm  |  2 +-
 tests/lint.scm | 16 ++++++++--------
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 8c6c20c723..31d366af46 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -737,7 +737,7 @@ (define (check-synopsis-style package)
 
   (define (check-start-with-package-name synopsis)
     (if (and (regexp-exec (package-name-regexp package) synopsis)
-               (not (starts-with-abbreviation? synopsis)))
+             (not (starts-with-abbreviation? synopsis)))
         (list
          (make-warning package
                        (G_ "synopsis should not start with the package name")
diff --git a/tests/lint.scm b/tests/lint.scm
index 95d82d7490..b899ebc700 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -171,14 +171,14 @@ (define (warning-contains? str warnings)
   "description contains leading whitespace"
   (single-lint-warning-message
    (let ((pkg (dummy-package "x"
-                              (description " Whitespace."))))
+                             (description " Whitespace."))))
      (check-description-style pkg))))
 
 (test-equal "description: trailing whitespace"
   "description contains trailing whitespace"
   (single-lint-warning-message
    (let ((pkg (dummy-package "x"
-                              (description "Whitespace. "))))
+                             (description "Whitespace. "))))
      (check-description-style pkg))))
 
 (test-equal "description: pluralized 'This package'"
@@ -359,18 +359,18 @@ (define (warning-contains? str warnings)
   '()
   (check-compiler-for-target
    (dummy-package "x"
-		  (arguments
-		   (list #:make-flags
-			 #~(list (string-append "CC=" (cc-for-target))))))))
+                  (arguments
+                   (list #:make-flags
+                         #~(list (string-append "CC=" (cc-for-target))))))))
 
 (test-equal "compiler-for-target: CC=gcc is acceptable when target=#false"
   '()
   (check-compiler-for-target
    ;; This (dummy) package consists purely of architecture-independent data.
    (dummy-package "tzdata"
-		  (arguments
-		   (list #:target #false
-			 #:make-flags #~(list "CC=gcc"))))))
+                  (arguments
+                   (list #:target #false
+                         #:make-flags #~(list "CC=gcc"))))))
 
 ;; The emacs-build-system sets #:tests? #f by default.
 (test-equal "tests-true: #:tests? #t acceptable for emacs packages"

base-commit: 33665c52c4670bc3b4d337c89ac9cc6c4c69b26f
-- 
2.46.0

[bug#74459] comments

[Gabriel Wicki]

Thanks for your review, Ludo'!  I've addressed your concern and came up
with an even more readable solution -- I hope you agree.

Thanks for merging and have a nice week,

gabber

bug#74459: comments

[Ludovic Courtès]

Hi,

Gabriel Wicki <gabriel@erlikon.ch> skribis:

> Thanks for your review, Ludo'!  I've addressed your concern and came up
> with an even more readable solution -- I hope you agree.

Yes, that’s nice.  Applied, thanks!

I removed “guix:” from commit subject lines and also followed up with a
commit that pre-compiles the regexp instead of recompiling it every time
via ‘string-match’ (it can make a difference when linting a large number
of packages as is the case in the Data Service for example).

Thanks!

Ludo’.

[bug#74459] [PATCH v2 2/7] guix: lint: Refine description start check logic.

[Gabriel Wicki]

Fix linter warnings for the following:

 - packages that belong to some programming language or ecosystem,
 e.g. python-foo or texlive-bar,
 - packages whose names end in a version distinction, e.g. wlroots-0.16 and
 - packages where the software's real name contains an underscore `_'
 character where our package name replaced that with a hyphen `-',
 e.g. wpa_supplicant and wpa-supplicant-minimal.

* guix/lint.scm (check-description-style)[check-proper-start]: Add conditions.
* tests/lint.scm: New tests.

Change-Id: Ifc9f5cda04db59e460e287cd93afae89c7f17e3c
---
 guix/lint.scm  | 27 ++++++++++++++++++---------
 tests/lint.scm | 25 +++++++++++++++++++++++++
 2 files changed, 43 insertions(+), 9 deletions(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 31d366af46..63d101ebf9 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -14,6 +14,7 @@
 ;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
 ;;; Copyright © 2021-2023 Maxime Devos <maximedevos@telenet.be>
 ;;; Copyright © 2021 Brice Waegeneire <brice@waegenei.re>
+;;; Copyright © 2024 Gabriel Wicki <gabriel@erlikon.ch>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -437,15 +438,23 @@ (define (check-description-style package)
         '()))
 
   (define (check-proper-start description)
-    (if (or (string-null? description)
-            (properly-starts-sentence? description)
-            (string-prefix-ci? (package-name package) description))
-        '()
-        (list
-         (make-warning
-          package
-          (G_ "description should start with an upper-case letter or digit")
-          #:field 'description))))
+    (let* ((initial
+            (string-take description
+                         (or (string-index description #\space)
+                             0)))
+           (first-word
+            (regexp-substitute/global #f "_" initial
+                                      'pre "-" 'post)))
+      (if (or (string-null? description)
+              (properly-starts-sentence? description)
+              (string-prefix-ci? first-word (package-name package))
+              (string-suffix-ci? first-word (package-name package)))
+          '()
+          (list
+           (make-warning
+            package
+            (G_ "description should start with an upper-case letter or digit")
+            #:field 'description)))))
 
   (define (check-end-of-sentence-space description)
     "Check that an end-of-sentence period is followed by two spaces."
diff --git a/tests/lint.scm b/tests/lint.scm
index b899ebc700..9297bfbaac 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -11,6 +11,7 @@
 ;;; Copyright © 2020 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
 ;;; Copyright © 2021, 2023 Maxime Devos <maximedevos@telenet.be>
+;;; Copyright © 2024 Gabriel Wicki <gabriel@erlikon.ch>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -132,6 +133,30 @@ (define (warning-contains? str warnings)
                             (description "x is a dummy package."))))
     (check-description-style pkg)))
 
+(test-equal "description: may start with beginning of package name"
+  '()
+  (let ((pkg (dummy-package "xyz-0.1"
+                            (description "xyz is a dummy package."))))
+    (check-description-style pkg)))
+
+(test-equal "description: may start with end of package name"
+  '()
+  (let ((pkg (dummy-package "foobar-xyz"
+                            (description "xyz is a dummy package."))))
+    (check-description-style pkg)))
+
+(test-equal "description: may start with non-hyphenated package name"
+  '()
+  (let ((pkg (dummy-package "foobar-xyz-minimal"
+                            (description "foobar_xyz is a dummy package."))))
+    (check-description-style pkg)))
+
+(test-equal "description: may start with end of package name"
+  '()
+  (let ((pkg (dummy-package "foo-bar"
+                            (description "bar is some thing in foo."))))
+    (check-description-style pkg)))
+
 (test-equal "description: two spaces after end of sentence"
   "sentences in description should be followed by two spaces; possible infraction at 3"
   (single-lint-warning-message
-- 
2.46.0

[bug#74459] [PATCH v2 3/7] guix: lint: Allow texinfo markup at beginning of description.

[Gabriel Wicki]

* guix/lint.scm(starts-with-texinfo-markup?): New function.
(check-description-style)[check-proper-start]: Add condition.
* tests/lint.scm: Add test case.

Change-Id: I674988882265d9e2041d48dba0f9627cd68bf292
---
 guix/lint.scm  | 8 +++++++-
 tests/lint.scm | 5 +++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 63d101ebf9..d6d48ad27c 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -370,6 +370,9 @@ (define (check-compiler-for-target package)
 (define (properly-starts-sentence? s)
   (string-match "^[(\"'`[:upper:][:digit:]]" s))
 
+(define (starts-with-texinfo-markup? s)
+  (string-match "^@(acronym|dfn|code|command|emph|file|quotation|samp|uref|url)\\{.*?\\}" s))
+
 (define (starts-with-abbreviation? s)
   "Return #t if S starts with what looks like an abbreviation or acronym."
   (string-match "^[A-Z][A-Z0-9]+\\>" s))
@@ -447,6 +450,7 @@ (define (check-description-style package)
                                       'pre "-" 'post)))
       (if (or (string-null? description)
               (properly-starts-sentence? description)
+              (starts-with-texinfo-markup? description)
               (string-prefix-ci? first-word (package-name package))
               (string-suffix-ci? first-word (package-name package)))
           '()
@@ -513,7 +517,9 @@ (define (check-description-style package)
          (match (check-texinfo-markup description)
            ((and warning (? lint-warning?)) (list warning))
            (plain-description
-            (check-proper-start plain-description))))
+            (if (string-prefix? "@" description)
+                '()
+                (check-proper-start plain-description)))))
         (list
          (make-warning package
                        (G_ "invalid description: ~s")
diff --git a/tests/lint.scm b/tests/lint.scm
index 9297bfbaac..df7042c470 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -121,6 +121,11 @@ (define (warning-contains? str warnings)
                              (description "bad description."))))
      (check-description-style pkg))))
 
+(test-equal "description: may start with texinfo markup"
+  '()
+  (check-description-style
+   (dummy-package "x" (description "@emph{Maxwell Equations of Software}"))))
+
 (test-equal "description: may start with a digit"
   '()
   (let ((pkg (dummy-package "x"
-- 
2.46.0

[bug#74459] [PATCH v2 4/7] guix: lint: Allow texinfo markup at beginning of synopsis.

[Gabriel Wicki]

* guix/lint.scm(check-synopsis-style)[check-proper-start]: Add condition.
* tests/lint.scm: Add test case.

Change-Id: I2509b3a4e7e51c6a274697ceb5f776c22e27c5f9
---
 guix/lint.scm  | 3 ++-
 tests/lint.scm | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index d6d48ad27c..396ee01fed 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -743,7 +743,8 @@ (define (check-synopsis-style package)
         '()))
 
   (define (check-proper-start synopsis)
-    (if (properly-starts-sentence? synopsis)
+    (if (or (properly-starts-sentence? synopsis)
+            (starts-with-texinfo-markup? synopsis))
         '()
         (list
          (make-warning package
diff --git a/tests/lint.scm b/tests/lint.scm
index df7042c470..6631034151 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -307,6 +307,12 @@ (define (warning-contains? str warnings)
       (check-synopsis-style pkg)))
    string<?))
 
+(test-equal "synopsis: starts with texinfo markup"
+  '()
+  (let ((pkg (dummy-package "x"
+                            (synopsis "@code{help}"))))
+    (check-synopsis-style pkg)))
+
 (test-equal "synopsis: too long"
   "synopsis should be less than 80 characters long"
   (single-lint-warning-message
-- 
2.46.0

[bug#74459] [PATCH v2 5/7] guix: lint: Prevent false positives in description typo check.

[Gabriel Wicki]

* guix/lint.scm(check-description-style)[check-description-typo]: Add spaces
to match strings to prevent matching false positives, like "allows tokens" or
"prevents torpedoes".
* tests/lint.scm: Add test.

Change-Id: Ifc2ec6167a590b9d2e742dd86fecd798c4bfaa24
---
 guix/lint.scm  | 4 ++--
 tests/lint.scm | 8 +++++++-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 396ee01fed..ee2059d812 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -507,8 +507,8 @@ (define (check-description-style package)
          (check-trademarks description)
          (check-description-typo description '(("This packages" . "This package")
                                                ("This modules" . "This module")
-                                               ("allows to" . #f)
-                                               ("permits to" . #f)))
+                                               ("allows to " . #f)
+                                               ("permits to " . #f)))
          ;; Use raw description for this because Texinfo rendering
          ;; automatically fixes end of sentence space.
          (check-end-of-sentence-space description)
diff --git a/tests/lint.scm b/tests/lint.scm
index 6631034151..47e31a69bf 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -219,12 +219,18 @@ (define (warning-contains? str warnings)
      (check-description-style pkg))))
 
 (test-equal "description: grammar 'allows to'"
-  "description contains typo 'allows to'"
+  "description contains typo 'allows to '"
   (single-lint-warning-message
    (let ((pkg (dummy-package "x"
                              (description "This package allows to do stuff."))))
      (check-description-style pkg))))
 
+(test-equal "description: grammar 'allows to' 2"
+  '()
+  (let ((pkg (dummy-package "x"
+                            (description "This package allows tokenization."))))
+    (check-description-style pkg)))
+
 (test-equal "synopsis: not a string"
   "invalid synopsis: #f"
   (single-lint-warning-message
-- 
2.46.0

[bug#74459] [PATCH v2 6/7] guix: lint: Ignore initials from double space check.

[Gabriel Wicki]

Prevent false positives in initials as the are commonly used in names, e.g.
Margaret E. Hamilton - which obviously do not end sentences.  Check whether a
period character `.' is preceded by at least two characters.  This should save
us from false positives when linting.

* guix/lint.scm(check-description-style)[check-end-of-sentence-space] Add
condition.
* tests/lint.scm: Add test case.

Change-Id: I42a1365aaaed2afc7308b88ebd4b0720ad362761
---
 guix/lint.scm  | 15 ++++++++++-----
 tests/lint.scm |  2 +-
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index ee2059d812..1c8be911eb 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -466,11 +466,16 @@ (define (check-description-style package)
            (reverse (fold-matches
                      "\\. [A-Z]" description '()
                      (lambda (m r)
-                       ;; Filter out matches of common abbreviations.
-                       (if (find (lambda (s)
-                                   (string-suffix-ci? s (match:prefix m)))
-                                 '("i.e" "e.g" "a.k.a" "resp"))
-                           r (cons (match:start m) r)))))))
+                       ;; Filter out matches of common abbreviations and
+                       ;; initials.
+                       (let ((pre (match:prefix m)))
+                         (if (or
+                              (string-match "[A-Z]$" pre) ;; Initial found
+                              (find (lambda (s)
+                                      (string-suffix-ci? s pre))
+                                    '("i.e" "e.g" "a.k.a" "resp")))
+                             r
+                             (cons (match:start m) r))))))))
       (if (null? infractions)
           '()
           (list
diff --git a/tests/lint.scm b/tests/lint.scm
index 47e31a69bf..09be160f5d 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -173,7 +173,7 @@ (define (warning-contains? str warnings)
   '()
   (let ((pkg (dummy-package "x"
                             (description
-                             "E.g. Foo, i.e. Bar resp. Baz (a.k.a. DVD)."))))
+                             "E.g. Foo, i.e. Bar resp. Baz (a.k.a. DVD).  Name O. Person"))))
     (check-description-style pkg)))
 
 (test-equal "description: may not contain trademark signs: ™"
-- 
2.46.0

[bug#74459] [PATCH v2 7/7] guix: lint: More abbreviations.

[Gabriel Wicki]

* guix/lint.scm: Allow more common abbreviations in double-space-after
sentence check.
* tests/lint.scm: Add tests.

Change-Id: I0eedf73e5fcd0a8c67b3ae3dfa979a57fe0f6253
---
 guix/lint.scm  | 2 +-
 tests/lint.scm | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 1c8be911eb..1ea43df6b3 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -473,7 +473,7 @@ (define (check-description-style package)
                               (string-match "[A-Z]$" pre) ;; Initial found
                               (find (lambda (s)
                                       (string-suffix-ci? s pre))
-                                    '("i.e" "e.g" "a.k.a" "resp")))
+                                    '("i.e" "e.g" "a.k.a" "resp" "cf" "al")))
                              r
                              (cons (match:start m) r))))))))
       (if (null? infractions)
diff --git a/tests/lint.scm b/tests/lint.scm
index 09be160f5d..3e9dbd29db 100644
--- a/tests/lint.scm
+++ b/tests/lint.scm
@@ -173,7 +173,7 @@ (define (warning-contains? str warnings)
   '()
   (let ((pkg (dummy-package "x"
                             (description
-                             "E.g. Foo, i.e. Bar resp. Baz (a.k.a. DVD).  Name O. Person"))))
+                             "O. Person e.g. Foo, i.e. Bar resp. Baz (a.k.a. DVD).  Name et al. cf. some paper."))))
     (check-description-style pkg)))
 
 (test-equal "description: may not contain trademark signs: ™"
-- 
2.46.0