[PATCH v3 0/5] Add GitLab CI to check for whitespace errors

Hello again,

This is the third version of my patch series to add a GitLab CI job to check for whitespace errors.

Changes since V2:

- In 35e293e6 (Merge branch 'ps/ci-test-with-jgit' into next,
  2024-05-01), `install-docker-dependencies.sh` script was merged into 
  `install-dependencies.sh` and removed. Thus this patch series now 
  depends on that change and is updated to use the other script.
- Changed the shebang to "#!/usr/bin/env bash".
- Made the argument count validation more strict.
- Fixed a typo.

GitHub CI:

- https://github.com/gitgitgadget/git/actions/runs/8941666020?pr=1727
- https://github.com/gitgitgadget/git/actions/runs/8941721282?pr=1727

GitLab CI:

- https://gitlab.com/gitlab-org/git/-/jobs/6776032414
- https://gitlab.com/gitlab-org/git/-/jobs/6776038234

Thanks for the reviews, -Justin

Justin Tobler (5):
  ci: pre-collapse GitLab CI sections
  github-ci: fix link to whitespace error
  ci: separate whitespace check script
  ci: make the whitespace report optional
  gitlab-ci: add whitespace error check

 .github/workflows/check-whitespace.yml | 67 ++----------------
 .gitlab-ci.yml                         |  9 +++
 ci/check-whitespace.sh                 | 95 ++++++++++++++++++++++++++
 ci/lib.sh                              |  2 +-
 4 files changed, 109 insertions(+), 64 deletions(-)
 create mode 100755 ci/check-whitespace.sh

Range-diff against v2:
1:  924d3eb23c = 1:  924d3eb23c ci: pre-collapse GitLab CI sections
2:  c8d8b444dc = 2:  c8d8b444dc github-ci: fix link to whitespace error
3:  6b44b21dda ! 3:  933e0c33f9 ci: separate whitespace check script
    @@ .github/workflows/check-whitespace.yml: jobs:
     
      ## ci/check-whitespace.sh (new) ##
     @@
    -+#!/bin/bash
    ++#!/usr/bin/env bash
     +
     +baseCommit=$1
     +outputFile=$2
4:  87dfd1d5a9 ! 4:  374735c60f ci: make the whitespace report optional
    @@ Commit message
     
      ## ci/check-whitespace.sh ##
     @@
    - #!/bin/bash
    + #!/usr/bin/env bash
     +#
     +# Check that commits after a specified point do not contain new or modified
     +# lines with whitespace errors. An optional formatted summary can be generated
    @@ ci/check-whitespace.sh
      outputFile=$2
      url=$3
      
    -+if test "$#" -eq 0 || test "$#" -gt 3
    ++if test "$#" -ne 1 && test "$#" -ne 3
     +then
     +	echo "USAGE: $0 <BASE_COMMIT> [<OUTPUT_FILE> <URL>]"
     +	exit 1
    @@ ci/check-whitespace.sh: then
     +	echo "Run the following command to resolve whitespace issues:"
     +	echo "git rebase --whitespace=fix ${goodParent}"
     +
    -+	# If target output file is provided, write formatted ouput.
    ++	# If target output file is provided, write formatted output.
     +	if test -n "$outputFile"
     +	then
     +		echo "🛑 Please review the Summary output for further information."
5:  175b300e91 ! 5:  a7deaeadc7 gitlab-ci: add whitespace error check
    @@ .gitlab-ci.yml: static-analysis:
     +check-whitespace:
     +  image: ubuntu:latest
     +  before_script:
    -+    - ./ci/install-docker-dependencies.sh
    ++    - ./ci/install-dependencies.sh
     +  script:
     +    - ./ci/check-whitespace.sh "$CI_MERGE_REQUEST_TARGET_BRANCH_SHA"
     +  rules: