Install asciidoctor using ruby bundle

Motivation: fixate the version of asciidoctor

Gemfile

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+source "https://rubygems.org"
+gem 'asciidoctor', '2.0.23'
+gem 'pygments.rb', '3.0'

Gemfile.lock

@@ -0,0 +1,16 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    asciidoctor (2.0.23)
+    pygments.rb (3.0.0)
+
+PLATFORMS
+  arm64-darwin-23
+  ruby
+
+DEPENDENCIES
+  asciidoctor (= 2.0.23)
+  pygments.rb (= 3.0)
+
+BUNDLED WITH
+   2.5.11

build-docs.sh

@@ -18,7 +18,7 @@ build-site() {
     cd .site
         # Delete "aerospace " prefifx in synopsis
         sed -i -E '/tag::synopsis/, /end::synopsis/ s/^(aerospace | {10})//' aerospace*
-        asciidoctor ./*.adoc
+        bundle exec asciidoctor ./*.adoc
         rm -rf ./*.adoc
         rm -rf aerospace* # Drop man pages
     cd - > /dev/null
@@ -32,7 +32,7 @@ build-site() {
 build-man() {
     cp-docs .man
     cd .man
-        asciidoctor -b manpage aerospace*.adoc
+        bundle exec asciidoctor -b manpage aerospace*.adoc
         rm -rf *.adoc
     cd - > /dev/null
 }

script/setup.sh

@@ -7,7 +7,6 @@ set -o pipefail # Any command failed in the pipe fails the whole pipe
 setup() {
     export BREW_PREFIX="$(brew --prefix)"
     tmp=(
-        ${BREW_PREFIX}/opt/asciidoctor/bin
         ${BREW_PREFIX}/opt/gsed/libexec/gnubin
         ${BREW_PREFIX}/opt/tree/bin
         ${BREW_PREFIX}/opt/xcodegen/bin
@@ -16,6 +15,7 @@ setup() {
         ${BREW_PREFIX}/opt/fishfish/bin
         ${BREW_PREFIX}/opt/bash/bin
         ${BREW_PREFIX}/opt/wget/bin
+        ${BREW_PREFIX}/opt/ruby@3/bin # asciidoctor
         /bin # bash
         /usr/bin # xcodebuild, zip, arch
     )