gnu: emacs-helpful: Update to 0.21.

* gnu/packages/patches/emacs-helpful-fix-tests.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it here.
* gnu/packages/emacs-xyz.scm (emacs-helpful): Update to 0.21.
[source]<patches>: Use it here.

1 files changed, 28 insertions, 0 deletions

diff --git a/gnu/packages/patches/emacs-helpful-fix-tests.patch b/gnu/packages/patches/emacs-helpful-fix-tests.patch
new file mode 100644
index 0000000000..61ed0671a4
--- /dev/null
+++ b/gnu/packages/patches/emacs-helpful-fix-tests.patch
@@ -0,0 +1,28 @@
+From 233e254bbe44f70ca899a506b3706af489228fda Mon Sep 17 00:00:00 2001
+From: aagon <aymeric.agon@hotmail.fr>
+Date: Thu, 10 Aug 2023 20:03:52 +0200
+Subject: [PATCH] Repair helpful--display-implementations test for emacs 29.1
+
+---
+ test/helpful-unit-test.el | 8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/test/helpful-unit-test.el b/test/helpful-unit-test.el
+index 0f5177b..0716b0d 100644
+--- a/test/helpful-unit-test.el
++++ b/test/helpful-unit-test.el
+@@ -1089,8 +1089,12 @@ find the source code."
+   (require 'xref)
+   (helpful-function 'xref-location-marker)
+   (should (s-contains-p "Implementations" (buffer-string)))
+-  (should (s-contains-p "((l xref-file-location))" (buffer-string)))
+-  (should (s-contains-p "((l xref-buffer-location))" (buffer-string))))
++  (should (if (version< emacs-version "29.1")
++	      (s-contains-p "((l xref-file-location))" (buffer-string))
++	    (s-contains-p "(xref-location-marker (L xref-file-location))" (buffer-string))))
++  (should (if (version< emacs-version "29.1")
++	      (s-contains-p "((l xref-buffer-location))" (buffer-string))
++	    (s-contains-p "(xref-location-marker (L xref-buffer-location))" (buffer-string)))))
+ 
+ (defun helpful--boring-advice (orig-fn &rest args)
+   (apply orig-fn args))