[Bug]: exclude broken for md files

[axelfontaine]

Operating System

Ubuntu 24.04

Ruby Version

ruby 3.2.3 (2024-01-18) [x86_64-linux-gnu]

Jekyll Version

jekyll 4.3.3

GitHub Pages Version

No response

Expected Behavior

In _config.yml

exclude:
  - README.md

prevents README.md from being included in _site

Current Behavior

README.md is copied to _site

Relevant log output

No response

Code Sample

No response

[mkasberg]

I cannot reproduce this.

$ jekyll --version
jekyll 4.3.3

$ jekyll new test-exclude-md
Running bundle install in /home/mkasberg/code/test-exclude-md... 
New jekyll site installed in /home/mkasberg/code/test-exclude-md. 

$ cd test-exclude-md 

$ echo "testing" > README.md

$ bundle exec jekyll build
Configuration file: /home/mkasberg/code/test-exclude-md/_config.yml
            Source: /home/mkasberg/code/test-exclude-md
       Destination: /home/mkasberg/code/test-exclude-md/_site
 Incremental build: disabled. Enable with --incremental
      Generating... 
       Jekyll Feed: Generating feed for posts
                    done in 0.374 seconds.
 Auto-regeneration: disabled. Use --watch to enable.

$ ls _site # NOTE README.md gets created because it's not yet excluded.
404.html  about  assets  feed.xml  index.html  jekyll  README.md

$ echo "exclude:
dquote>   - README.md" > _config.yml 

$ tail -n4 _config.yml 
exclude:
  - README.md

$ bundle exec jekyll build
Configuration file: /home/mkasberg/code/test-exclude-md/_config.yml
            Source: /home/mkasberg/code/test-exclude-md
       Destination: /home/mkasberg/code/test-exclude-md/_site
 Incremental build: disabled. Enable with --incremental
      Generating... 
       Jekyll Feed: Generating feed for posts
     Build Warning: Layout 'post' requested in _posts/2024-05-23-welcome-to-jekyll.markdown does not exist.
     Build Warning: Layout 'default' requested in 404.html does not exist.
     Build Warning: Layout 'page' requested in about.markdown does not exist.
     Build Warning: Layout 'home' requested in index.markdown does not exist.
                    done in 0.327 seconds.
 Auto-regeneration: disabled. Use --watch to enable.

$ ls _site # NOTE exclude works correctly and removes README.md.
404.html  about  feed.xml  index.html  jekyll

Since I don't believe this is a bug with Jekyll, here are some other things you might check:

• Run jekyll clean, or otherwise delete README.md from _site and see whether it gets re-created.
• Ensure your _config.yml is valid yaml and your exclude: section is formatted correctly.
• Ensure there are no other errors that prevent your jekyll build from running.

[jbleuzen]

Another thing that you can check :

• You have the keyword exclude only once in your _config.yml.

I watched the issue because I thought I had the issue but with @mkasberg test I don't reproduce. After checking my conf I had the keyword exclude twice...

[mattr-]

@axelfontaine Please feel free to reopen after checking the above comments to confirm you don't have a double exclude key in your config. If you do reopen this, you must provide a reproduction test case since we can't confirm your issue. Thanks!