prepare branch to be renamed from master to main

11 files changed, 17 insertions, 16 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9ea377e9..d01de21e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -105,8 +105,8 @@ jobs:
     - name: Switch to upstream dependencies
       if: matrix.upstream
       run: |
-        bundle exec ruby scripts/switch-to-asciidoctor-master.rb
-        bundle exec ruby scripts/switch-to-prawn-master.rb
+        bundle exec ruby scripts/switch-to-asciidoctor-head.rb
+        bundle exec ruby scripts/switch-to-prawn-head.rb
         rm -f Gemfile.lock
         bundle config --local clean true
         bundle --jobs 3 --retry 3
diff --git a/.github/workflows/upstream-dispatch.yml b/.github/workflows/upstream-dispatch.yml
index a21e0174..2028727c 100644
--- a/.github/workflows/upstream-dispatch.yml
+++ b/.github/workflows/upstream-dispatch.yml
@@ -27,7 +27,7 @@ jobs:
       run: |
         bundle --jobs 3 --retry 3
         # FIXME: should switch to branch specified in payload
-        bundle exec ruby scripts/switch-to-asciidoctor-master.rb
+        bundle exec ruby scripts/switch-to-asciidoctor-head.rb
         rm -f Gemfile.lock
         bundle --jobs 3 --retry 3
     - name: Run tests
diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index 35c35911..3d634c86 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -3,7 +3,7 @@
 :uri-repo: https://github.com/asciidoctor/asciidoctor-pdf
 
 This document provides a high-level view of the changes to the {project-name} by release.
-For a detailed view of what has changed, refer to the {uri-repo}/commits/master[commit history] on GitHub.
+For a detailed view of what has changed, refer to the {uri-repo}/commits/main[commit history] on GitHub.
 
 == Unreleased
 
diff --git a/CONTRIBUTING-CODE.adoc b/CONTRIBUTING-CODE.adoc
index 08114bdd..1c631b5c 100644
--- a/CONTRIBUTING-CODE.adoc
+++ b/CONTRIBUTING-CODE.adoc
@@ -195,9 +195,9 @@ Now you can run the application as modified by the PR:
 
  $ bundle exec asciidoctor-pdf /path/to/sample.adoc
 
-To switch back to master, just type:
+To switch back to main just type:
 
- $ git checkout master
+ $ git checkout main
 
 ==== In Your Application
 
diff --git a/CONTRIBUTING.adoc b/CONTRIBUTING.adoc
index 1a6df4c2..b119c8eb 100644
--- a/CONTRIBUTING.adoc
+++ b/CONTRIBUTING.adoc
@@ -37,7 +37,7 @@ Here are just a few of the ways you can contribute to the project:
 * Writing, editing or maintaining the documentation
 * Organizing the content (information architecture & content strategy)
 * Using or extending the software in a creative way
-* Testing a prerelease, a pull request or master
+* Testing a prerelease, a pull request, the development branch
 * Reviewing or providing feedback on pull requests
 * Writing code (_No patch is too small!_)
 ** Fixing typos
diff --git a/README.adoc b/README.adoc
index 17285cb7..d68f1005 100644
--- a/README.adoc
+++ b/README.adoc
@@ -38,7 +38,7 @@ endif::[]
 :url-graphicsmagick: http://www.graphicsmagick.org
 
 ifdef::status[]
-image:{url-project-repo}/workflows/CI/badge.svg[Build Status (GitHub Actions),link={url-project-repo}/actions?query=workflow%3ACI+branch%3Amaster]
+image:{url-project-repo}/workflows/CI/badge.svg[Build Status (GitHub Actions),link={url-project-repo}/actions?query=workflow%3ACI+branch%3Amain]
 image:https://img.shields.io/gem/v/asciidoctor-pdf.svg[Latest Release, link={url-gem}]
 endif::[]
 
diff --git a/asciidoctor-pdf.gemspec b/asciidoctor-pdf.gemspec
index 727aaeb9..18c33e82 100644
--- a/asciidoctor-pdf.gemspec
+++ b/asciidoctor-pdf.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   #s.required_ruby_version = '>= 2.5.0'
   s.metadata = {
     'bug_tracker_uri' => 'https://github.com/asciidoctor/asciidoctor-pdf/issues',
-    'changelog_uri' => 'https://github.com/asciidoctor/asciidoctor-pdf/blob/master/CHANGELOG.adoc',
+    'changelog_uri' => 'https://github.com/asciidoctor/asciidoctor-pdf/blob/main/CHANGELOG.adoc',
     'mailing_list_uri' => 'http://discuss.asciidoctor.org',
     'source_code_uri' => 'https://github.com/asciidoctor/asciidoctor-pdf'
   }
@@ -35,7 +35,7 @@ Gem::Specification.new do |s|
 
   s.add_runtime_dependency 'asciidoctor', '~> 2.0'
   s.add_runtime_dependency 'prawn', '~> 2.4.0'
-  # NOTE must use prawn-table from master branch (defined in Gemfile) for full functionality
+  # NOTE must use prawn-table from head (defined in Gemfile) for full functionality
   s.add_runtime_dependency 'prawn-table', '~> 0.2.0'
   s.add_runtime_dependency 'prawn-templates', '~> 0.1.0'
   s.add_runtime_dependency 'prawn-svg', '~> 0.31.0'
diff --git a/docs/theming-guide.adoc b/docs/theming-guide.adoc
index b0356ee5..dd52136e 100644
--- a/docs/theming-guide.adoc
+++ b/docs/theming-guide.adoc
@@ -19,6 +19,7 @@ endif::[]
 // Aliases:
 :conum-guard-yaml: #
 ifdef::backend-pdf[:conum-guard-yaml: # #]
+:url-repo-root: https://github.com/asciidoctor/asciidoctor-pdf/tree/main
 :url-fontforge: https://fontforge.github.io/en-US/
 :url-fontforge-scripting: https://fontforge.github.io/en-US/documentation/scripting/
 :url-prawn: http://prawnpdf.org
@@ -147,7 +148,7 @@ Otherwise, Asciidoctor PDF will use built-in AFM fonts, which can result in miss
 
 [TIP]
 ====
-Instead of creating a theme from scratch, another option is to download the https://github.com/asciidoctor/asciidoctor-pdf/blob/master/data/themes/default-theme.yml[default-theme.yml] file from the source repository.
+Instead of creating a theme from scratch, another option is to download the {url-repo-root}/data/themes/default-theme.yml[default-theme.yml] file from the source repository.
 Save the file using a unique name (e.g., _custom-theme.yml_) and start hacking on it.
 
 Alternatively, you can snag the file from your local installation using the following command:
@@ -608,7 +609,7 @@ The following image types (and corresponding file extensions) are supported:
 * SVG (.svg)
 
 CAUTION: The GIF format (.gif) and BMP format (.bmp) are not supported unless you're using prawn-gmagick.
-See https://github.com/asciidoctor/asciidoctor-pdf#supporting-additional-image-file-formats[support for additional image file formats] for details.
+See {url-repo-root}/README.adoc#supporting-additional-image-file-formats[support for additional image file formats] for details.
 
 Here's how an image is specified in the theme file as a bare image path:
 
@@ -1014,9 +1015,9 @@ This nested structure is for organizational purposes only.
 All keys are flatted when the theme is loaded (e.g., `align` nested under `base` becomes `base-align`).
 
 The converter uses the values of these keys to control how most elements are arranged and styled in the PDF.
-The default values listed in this section get inherited from the https://github.com/asciidoctor/asciidoctor-pdf/blob/master/data/themes/base-theme.yml[base theme].
+The default values listed in this section get inherited from the {url-repo-root}/data/themes/base-theme.yml[base theme].
 
-IMPORTANT: The https://github.com/asciidoctor/asciidoctor-pdf/blob/master/data/themes/default-theme.yml[default theme] has a different set of values which are not shown in this guide.
+IMPORTANT: The {url-repo-root}/data/themes/default-theme.yml[default theme] has a different set of values which are not shown in this guide.
 
 When creating a theme that extends the base theme, all keys are optional.
 Required keys are provided by the base theme.
@@ -5975,5 +5976,5 @@ Performing all this font modification manually can be tedious (not to mention ha
 Fortunately, FontForge provides a {url-fontforge-scripting}[scripting interface], which you can use to automate the process.
 
 In fact, that's what we use to prepare the fonts that are bundled with Asciidoctor PDF.
-You can find that FontForge script, the Bash script that calls it, and the Docker image in which it is run in the https://github.com/asciidoctor/asciidoctor-pdf/tree/master/scripts[scripts directory] of this project.
+You can find that FontForge script, the Bash script that calls it, and the Docker image in which it is run in the {url-repo-root}/scripts[scripts directory] of this project.
 You can use that script as a starting point or reference for your own font preparation / modification script.
diff --git a/scripts/switch-to-asciidoctor-master.rb b/scripts/switch-to-asciidoctor-head.rb
index 7ea519bc..7ea519bc 100644
--- a/scripts/switch-to-asciidoctor-master.rb
+++ b/scripts/switch-to-asciidoctor-head.rb
diff --git a/scripts/switch-to-prawn-master.rb b/scripts/switch-to-prawn-head.rb
index 438e1021..438e1021 100644
--- a/scripts/switch-to-prawn-master.rb
+++ b/scripts/switch-to-prawn-head.rb
diff --git a/spec/link_spec.rb b/spec/link_spec.rb
index 32a1ab53..17372f35 100644
--- a/spec/link_spec.rb
+++ b/spec/link_spec.rb
@@ -50,7 +50,7 @@ describe 'Asciidoctor::PDF::Converter - Link' do
     end
 
     it 'should not encode hash that precedes the fragment in a URL' do
-      url_with_hash = 'https://github.com/asciidoctor/asciidoctor-pdf/blob/master/docs/theming-guide.adoc#fonts'
+      url_with_hash = 'https://github.com/asciidoctor/asciidoctor-pdf/blob/main/docs/theming-guide.adoc#fonts'
       pdf = to_pdf %(Learn how to configure #{url_with_hash}[].)
       text = (pdf.page 1).text
       (expect text).to eql %(Learn how to configure #{url_with_hash.sub 'theming-guide', "theming-\nguide"}.)