aux/workflow/TODOs.sh: Remove dependency on Perl

I've replaced the Perl usage for doing regexes with plain sed.

Implements #task-bf65e50a-b424-9fce-ba8e-fcd6b3bf1c7a.

Also:
- README.md: remove Perl from the list of tools required;
- po/LC_MESSAGES/README.en.md/*.po: translate the update on required
  tools;
- aux/guix/manifest.scm: remove Perl package.

6 files changed, 46 insertions, 40 deletions

diff --git a/README.md b/README.md
index be08c47..b5ce9e6 100644
--- a/README.md
+++ b/README.md
@@ -87,7 +87,7 @@ The directory structure of the repository is:
 Extra tools used for development are:
 - [ShellCheck] for validating scripts;
 - [po4a], [mdpo] and [gettext] for i18n and l10n support;
-- [pandoc] and Perl for generating the documentation HTML and website.
+- [pandoc] for generating the documentation HTML and website.
 
 [ShellCheck]: https://www.shellcheck.net/
 [po4a]: https://po4a.org/index.php.en
diff --git a/aux/guix/manifest.scm b/aux/guix/manifest.scm
index 91a1b84..f4799bf 100644
--- a/aux/guix/manifest.scm
+++ b/aux/guix/manifest.scm
@@ -10,7 +10,6 @@
         git
         gawk
         make
-        perl
         shellcheck
         pandoc
         gettext
diff --git a/aux/workflow/TODOs.sh b/aux/workflow/TODOs.sh
index 96cb064..d875e0e 100755
--- a/aux/workflow/TODOs.sh
+++ b/aux/workflow/TODOs.sh
@@ -39,21 +39,21 @@ if [ -z "${PROJECT_UC:-}" ]; then
 	PROJECT_UC="$PROJECT"
 fi
 
-TODOS_ADD_REGEX='s/^## (TODO|DOING|WAITING|MEETING|INACTIVE|NEXT|CANCELLED|DONE|WONTFIX) (.*) \{#(.*?)\}(.*)$/## <a href="#\3"><span class="\1">\1<\/span> \2<\/a>\4\n<pre class="header-anchor" id="\3">#\3<\/pre>\n/'
-TAGS_REGEX='s/tag:([\w-]+)/<span class="tag">\1<\/span>/g'
-TODOS_CLEANUP_REGEX1='s/(<a><a)/<a/'
-TODOS_CLEANUP_REGEX2='s/<\/a><\/a>/<\/a>/'
 
-sed -e "s:@PROJECT_UC@:$PROJECT_UC:g"     \
-    -e "s:@PROJECT@:$PROJECT:g"           \
-    -e "s:@MAILING_LIST@:$MAILING_LIST:g" \
-    -e "s:@TLD@:$TLD:g"                   \
-    < aux/workflow/preamble.md | \
-	printf \
-		'%s\n\n' \
-		"$(cat - TODOs.md)" | \
-	perl -pe "$TODOS_ADD_REGEX" | \
-	perl -pe "$TAGS_REGEX"      | \
+# shellcheck disable=1004
+IDS_REGEX='s:^## \(TODO\|DOING\|WAITING\|MEETING\|INACTIVE\|NEXT\|CANCELLED\|DONE\|WONTFIX\) \(.*\) {#\(.*\)}\(.*\)$:## <a href="#\3"><span class="\1">\1</span> \2</a>\4\
+<pre class="header-anchor" id="\3">#\3</pre>\
+:g'
+TAGS_REGEX='s|tag:\([a-z0-9-]*\)|<span class="tag">\1</span>|g'
+
+cat aux/workflow/preamble.md TODOs.md | \
+	sed \
+		-e "s:@PROJECT_UC@:$PROJECT_UC:g"     \
+		-e "s:@PROJECT@:$PROJECT:g"           \
+		-e "s:@MAILING_LIST@:$MAILING_LIST:g" \
+		-e "s:@TLD@:$TLD:g"                   \
+		-e "$IDS_REGEX"                       \
+    -e "$TAGS_REGEX"                      | \
 	pandoc \
 		--toc                                  \
 		--highlight-style pygments             \
@@ -64,8 +64,8 @@ sed -e "s:@PROJECT_UC@:$PROJECT_UC:g"     \
 		-r commonmark                          \
 		-w html                                \
 		-H aux/workflow/favicon.html           \
-		-H aux/workflow/style.css              \
-		| \
-	perl -pe "$TODOS_CLEANUP_REGEX1" | \
-	perl -pe "$TODOS_CLEANUP_REGEX2" \
+		-H aux/workflow/style.css              | \
+	sed \
+		-e 's:<a><a:<a:g'      \
+		-e 's:</a></a>:</a>:g' \
 	> "$OUTDIR/TODOs.html"
diff --git a/po/LC_MESSAGES/README.en.md/eo.po b/po/LC_MESSAGES/README.en.md/eo.po
index d6720f2..0ce9115 100644
--- a/po/LC_MESSAGES/README.en.md/eo.po
+++ b/po/LC_MESSAGES/README.en.md/eo.po
@@ -109,12 +109,6 @@ msgstr ""
 "[po4a][po4a], [mdpo][mdpo] and [gettext][gettext] for internaciigo kaj "
 "lokigo;"
 
-#: README.en.md:block 20 (unordered list)
-msgid ""
-"[pandoc][pandoc] and Perl for generating the documentation HTML and website."
-msgstr ""
-"[pandoc][pandoc] kaj Perl por generi la dokumentadon kaj retejon HTML."
-
 #: README.en.md:block 25 (paragraph)
 msgid ""
 "Send contributions to the [mailing list][mailing list] via [`git send-"
@@ -358,7 +352,7 @@ msgid "`src/`: main source code for the project;"
 msgstr "`src/`: ĉefa fontkodo de la projekto;"
 
 msgid "`tests/`: integration tests for the project."
-msgstr "`tests /`: integriĝaj testoj por la projekto. "
+msgstr "`tests /`: integriĝaj testoj por la projekto."
 
 msgid ""
 "`aux/`: personal scripts and helpers I've vendored in to ensure the "
@@ -378,6 +372,14 @@ msgid ""
 msgstr ""
 "[`git-permalink.1`][`git-permalink.1`] ([en][en2], [pt][pt2], [fr][fr2])."
 
+msgid "[pandoc][pandoc] for generating the documentation HTML and website."
+msgstr "[pandoc][pandoc] por generi la dokumentadon kaj retejon HTML."
+
+#~ msgid ""
+#~ "[pandoc][pandoc] and Perl for generating the documentation HTML and website."
+#~ msgstr ""
+#~ "[pandoc][pandoc] kaj Perl por generi la dokumentadon kaj retejon HTML."
+
 #~ msgid ""
 #~ "The documentation is available via installed manpages or online: [`git-"
 #~ "permalink.1`][`git-permalink.1`] ([pt][pt2], [fr][fr2], [eo][eo2])."
diff --git a/po/LC_MESSAGES/README.en.md/fr.po b/po/LC_MESSAGES/README.en.md/fr.po
index cee5e6b..6921576 100644
--- a/po/LC_MESSAGES/README.en.md/fr.po
+++ b/po/LC_MESSAGES/README.en.md/fr.po
@@ -114,13 +114,6 @@ msgstr ""
 "[po4a][po4a], [mdpo][mdpo] et [gettext][gettext] pour internationalisation "
 "et localisation;"
 
-#: README.en.md:block 20 (unordered list)
-msgid ""
-"[pandoc][pandoc] and Perl for generating the documentation HTML and website."
-msgstr ""
-"[pandoc][pandoc] et Perl pour générer le HTML de la documentation e de le "
-"site web."
-
 #: README.en.md:block 25 (paragraph)
 msgid ""
 "Send contributions to the [mailing list][mailing list] via [`git send-"
@@ -386,6 +379,16 @@ msgid ""
 msgstr ""
 "[`git-permalink.1`][`git-permalink.1`] ([en][en2], [pt][pt2], [eo][eo2])."
 
+msgid "[pandoc][pandoc] for generating the documentation HTML and website."
+msgstr ""
+"[pandoc][pandoc] pour générer le HTML de la documentation e de le site web."
+
+#~ msgid ""
+#~ "[pandoc][pandoc] and Perl for generating the documentation HTML and website."
+#~ msgstr ""
+#~ "[pandoc][pandoc] et Perl pour générer le HTML de la documentation e de le "
+#~ "site web."
+
 #~ msgid ""
 #~ "The documentation is available via installed manpages or online: [`git-"
 #~ "permalink.1`][`git-permalink.1`] ([pt][pt2], [fr][fr2], [eo][eo2])."
diff --git a/po/LC_MESSAGES/README.en.md/pt.po b/po/LC_MESSAGES/README.en.md/pt.po
index ffb14f4..b721f13 100644
--- a/po/LC_MESSAGES/README.en.md/pt.po
+++ b/po/LC_MESSAGES/README.en.md/pt.po
@@ -113,11 +113,6 @@ msgstr ""
 "[po4a][po4a], [mdpo][mdpo] e [gettext][gettext] para suporte à "
 "internacionalização e localização;"
 
-#: README.en.md:block 20 (unordered list)
-msgid ""
-"[pandoc][pandoc] and Perl for generating the documentation HTML and website."
-msgstr "[pandoc][pandoc] e Perl para gerar o HTML da documentação e do site."
-
 #: README.en.md:block 25 (paragraph)
 msgid ""
 "Send contributions to the [mailing list][mailing list] via [`git send-"
@@ -382,7 +377,14 @@ msgstr ""
 msgid ""
 "[`git-permalink.1`][`git-permalink.1`] ([pt][pt2], [fr][fr2], [eo][eo2])."
 msgstr ""
-" [`git-permalink.1`][`git-permalink.1`] ([en][en2], [fr][fr2], [eo][eo2])."
+"[`git-permalink.1`][`git-permalink.1`] ([en][en2], [fr][fr2], [eo][eo2])."
+
+msgid "[pandoc][pandoc] for generating the documentation HTML and website."
+msgstr "[pandoc][pandoc] para gerar o HTML da documentação e do site."
+
+#~ msgid ""
+#~ "[pandoc][pandoc] and Perl for generating the documentation HTML and website."
+#~ msgstr "[pandoc][pandoc] e Perl para gerar o HTML da documentação e do site."
 
 #~ msgid ""
 #~ "The documentation is available via installed manpages or online: [`git-"