Merge branch 'main' into further-clean-up-helper-scripts

* main:
  Remove Ubuntu 16.04 LTS from test matrix (#123)
  Configure default Git branch name for macOS tests in GitHub
  Handle rename of primary branch from "master" to "main"
  Ensure Git index is up-to-date before dirty repo  check #37 (#109)

.github/workflows/run-bats-core-tests.yml

@@ -1,12 +1,12 @@
 name: Tests
 
 on:
-  # Only run tests on push to master branch
+  # Only run tests on push to main branch
   push:
-    branches: [master]
-  # Run tests for all pull request changes targeting master
+    branches: [main]
+  # Run tests for all pull request changes targeting main
   pull_request:
-    branches: [master]
+    branches: [main]
 
 jobs:
 
@@ -28,7 +28,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-16.04, ubuntu-18.04, ubuntu-20.04, macos-latest]
+        os: [ubuntu-18.04, ubuntu-20.04, macos-latest]
 
     steps:
     # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it

CHANGELOG.md

@@ -25,6 +25,8 @@ The format is based on [Keep a Changelog][1], and this project adheres to
 
 ### Fixed
 
+- Ensure Git index is up-to-date before checking for dirty repo, to avoid
+  failures seen in CI systems where the repo seems dirty when it isn't. (#37)
 - Respect Git `core.hooksPath` setting when installing the pre-commit hook. (#104)
 - Zsh completion. (#107)
 - Fix salt generation for partial (patch) commits (#118)

INSTALL.md

@@ -1,16 +1,14 @@
-Install transcrypt
-==================
+# Install transcrypt
 
 The requirements to run transcrypt are minimal:
 
-* Bash
-* Git
-* OpenSSL
+- Bash
+- Git
+- OpenSSL
 
 You also need access to the _transcrypt_ script itself...
 
-Manual Installation
--------------------
+## Manual Installation
 
 You can add transcrypt directly to your repository, or just put it somewhere in
 your $PATH:
@@ -19,8 +17,7 @@ your $PATH:
     $ cd transcrypt/
     $ sudo ln -s ${PWD}/transcrypt /usr/local/bin/transcrypt
 
-Installation via Packages
--------------------------
+## Installation via Packages
 
 A number of packages are available for installing transcrypt directly on your
 system via its native package manager. Some of these packages also include man
@@ -29,7 +26,7 @@ page documentation as well as shell auto-completion scripts.
 ### Arch Linux
 
 If you're on Arch Linux, you can build/install transcrypt using the
-[provided PKGBUILD](https://github.com/elasticdog/transcrypt/blob/master/contrib/packaging/pacman/PKGBUILD):
+[provided PKGBUILD](https://github.com/elasticdog/transcrypt/blob/main/contrib/packaging/pacman/PKGBUILD):
 
     $ git clone https://github.com/elasticdog/transcrypt.git
     $ cd transcrypt/contrib/packaging/pacman/
@@ -50,7 +47,7 @@ If you're on NixOS, you can install transcrypt directly via
     $ nix-env -iA nixos.gitAndTools.transcrypt
 
 > _**Note:**
-> The [transcrypt derivation](https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/version-management/git-and-tools/transcrypt/default.nix)
+> The [transcrypt derivation](https://github.com/NixOS/nixpkgs/blob/main/pkgs/applications/version-management/git-and-tools/transcrypt/default.nix)
 > was added in Oct 2015, so it is not available on the 15.09 channel._
 
 ### OS X

README.md

@@ -183,7 +183,7 @@ re-configure transcrypt with the new credentials.
 
     $ transcrypt --flush-credentials
     $ git fetch origin
-    $ git merge origin/master
+    $ git merge origin/main
     $ transcrypt -c aes-256-cbc -p 'the-new-password'
 
 ### Command Line Options

transcrypt

@@ -298,6 +298,8 @@ run_safety_checks() {
 	# ensure the repository is clean (if it has a HEAD revision) so we can force
 	# checkout files without the destruction of uncommitted changes
 	if [[ $requires_clean_repo ]] && [[ $HEAD_EXISTS ]] && [[ $IS_BARE == 'false' ]]; then
+		# ensure index is up-to-date before dirty check
+		git update-index -q --really-refresh
 		# check if the repo is dirty
 		if ! git diff-index --quiet HEAD --; then
 			die 1 'the repo is dirty; commit or stash your changes before running transcrypt'