^ In Commit_parsers With Skip_lines Not Working

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Introduction

When working with unconventional commits, generating a changelog can be a challenging task. The git-cliff tool is designed to help with this process, but it may not always work as expected. In this article, we will explore an issue where the ^ symbol in the commit_parsers configuration is not working as intended, even when skip_lines is set to true.

Is there an existing issue for this?

Before we dive into the issue, it's essential to check if there is already an existing issue that addresses this problem. After conducting a thorough search, we were unable to find any existing issues that match this specific problem.

Description of the bug

The issue arises when trying to generate a changelog for unconventional commits that contain more than one change. The commit_parsers configuration is used to grab each relevant part of the commit and make a separate entry for it in the changelog. However, when the ^ symbol is used in the message field of the commit_parsers configuration, the skip_lines option does not seem to work as expected.

Steps To Reproduce

To reproduce this issue, you can use the following configuration:

{% else %}\
    ## [unreleased]
{% endif %}\
{% for group, commits in commits | group_by(attribute="group") %}
    ### {{ group | striptags | trim | upper_first }}
    {% for commit in commits %}
        - {% if commit.scope %}*({{ commit.scope }})* {% endif %}\
            {% if commit.breaking %}[**breaking**] {% endif %}\
            {{ commit.message | upper_first }}\
    {% endfor %}
{% endfor %}\n
"""

footer = """
<!-- generated by git-cliff -->
"""
# remove the leading and trailing s
trim = true

[git]
conventional_commits = false
filter_unconventional = false
split_commits = true
commit_parsers = [
  { message = "^fix:", group = "Fixed" },
]
filter_commits = true
topo_order = false
sort_commits = "oldest"

You can then run the following command:

cd $(mktemp -d)
git init .
git commit --allow-empty -m "Unconventional commit" -m "fix: first line of the commit body"
git cliff

This should yield an empty changelog.

Expected behavior

The expected behavior is that the changelog should contain the following:

Fixed

  • Fix: first line of the commit body

This is also what happens if you change the commit_parsers configuration to:

commit_parsers = [
  { message = "fix:", group = "Fixed" },
]

Screenshots / Logs

No screenshots or logs are provided for this issue.

Software information

The software information for this issue is as follows:

  • Operating system: Mac OS 14.6.1
  • Rust version: 1.85.0
  • Project version: Tested on both 2.5.0 and 2.8.0

Additional context

No additional context is provided for this issue.

Conclusion

In conclusion, the issue with the ^ symbol in the commit_parsers configuration not working with skip_lines set to true is a complex problem that requires further investigation. The expected behavior is that the changelog should contain the relevant information from the commit, but the current implementation does not seem to work as intended. Further research and testing are needed to resolve this issue.

Possible solutions

One possible solution to this issue is to modify the commit_parsers configuration to use a different regular expression that matches the ^ symbol. For example:

commit_parsers = [
  { message = "^fix:", group = "Fixed", skip_lines = true },
]

However, this may not be a viable solution, as it may not work for all cases.

Another possible solution is to modify the git-cliff tool to handle the ^ symbol correctly. This may involve modifying the regular expression used to match the commit message or adding additional logic to handle the skip_lines option.

Future work

Future work on this issue should focus on further investigating the problem and identifying the root cause. This may involve:

  • Conducting additional testing to reproduce the issue
  • Analyzing the git-cliff tool's code to understand how it handles the commit_parsers configuration
  • Modifying the commit_parsers configuration to use a different regular expression
  • Modifying the git-cliff tool to handle the ^ symbol correctly

Q: What is the issue with the ^ symbol in the commit_parsers configuration?

A: The issue is that the ^ symbol in the commit_parsers configuration is not working as intended, even when skip_lines is set to true. This means that the commit message is not being parsed correctly, resulting in an empty changelog.

Q: What is the expected behavior?

A: The expected behavior is that the changelog should contain the relevant information from the commit, including the commit message. This should be the case even when the commit message contains the ^ symbol.

Q: What are the possible solutions to this issue?

A: There are several possible solutions to this issue, including:

  • Modifying the commit_parsers configuration to use a different regular expression that matches the ^ symbol.
  • Modifying the git-cliff tool to handle the ^ symbol correctly.
  • Adding additional logic to handle the skip_lines option.

Q: Why is the ^ symbol causing issues?

A: The ^ symbol is causing issues because it is being treated as a special character in the regular expression used to match the commit message. This means that the commit message is not being parsed correctly, resulting in an empty changelog.

Q: How can I reproduce this issue?

A: To reproduce this issue, you can use the following configuration:

{% else %}\
    ## [unreleased]
{% endif %}\
{% for group, commits in commits | group_by(attribute="group") %}
    ### {{ group | striptags | trim | upper_first }}
    {% for commit in commits %}
        - {% if commit.scope %}*({{ commit.scope }})* {% endif %}\
            {% if commit.breaking %}[**breaking**] {% endif %}\
            {{ commit.message | upper_first }}\
    {% endfor %}
{% endfor %}\n
"""

footer = """
<!-- generated by git-cliff -->
"""
# remove the leading and trailing s
trim = true

[git]
conventional_commits = false
filter_unconventional = false
split_commits = true
commit_parsers = [
  { message = "^fix:", group = "Fixed" },
]
filter_commits = true
topo_order = false
sort_commits = "oldest"

You can then run the following command:

cd $(mktemp -d)
git init .
git commit --allow-empty -m "Unconventional commit" -m "fix: first line of the commit body"
git cliff

This should yield an empty changelog.

Q: What software information is required to reproduce this issue?

A: The software information required to reproduce this issue is:

  • Operating system: Mac OS 14.6.1
  • Rust version: 1.85.0
  • Project version: Tested on both 2.5.0 and 2.8.0

Q: What is the additional context for this issue?

A: There is no additional context for this issue.

Q: What is the conclusion of this issue?

A: The conclusion of this issue is that the ^ symbol in the commit_parsers configuration is not working as intended, even when skip_lines is set to true. This means that the commit message is not being parsed correctly, resulting in an empty changelog. Further research and testing are needed to resolve this issue.

Q: What is the future work for this issue?

A: The future work for this issue should focus on further investigating the problem and identifying the root cause. This may involve:

  • Conducting additional testing to reproduce the issue
  • Analyzing the git-cliff tool's code to understand how it handles the commit_parsers configuration
  • Modifying the commit_parsers configuration to use a different regular expression
  • Modifying the git-cliff tool to handle the ^ symbol correctly