Index of Lints

Setup

As always we need a working it repository with the hooks installed to run these lints

git init .
git mit-install

I'm going to assume you've run a git mit recently

git mit bt

Lint list

You can see the full available lint list at any time by running

git mit-config lint available

╭───────────────────────────────────┬──────────╮
│ Lint                              ┆ Status   │
╞═══════════════════════════════════╪══════════╡
│ duplicated-trailers               ┆ enabled  │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ pivotal-tracker-id-missing        ┆ disabled │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ jira-issue-key-missing            ┆ disabled │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ github-id-missing                 ┆ disabled │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ subject-not-separated-from-body   ┆ enabled  │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ subject-longer-than-72-characters ┆ enabled  │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ subject-line-not-capitalized      ┆ disabled │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ subject-line-ends-with-period     ┆ disabled │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ body-wider-than-72-characters     ┆ enabled  │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ not-conventional-commit           ┆ disabled │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌┤
│ not-emoji-log                     ┆ disabled │
╰───────────────────────────────────┴──────────╯

Trailers

Lints relating to trailers:

duplicated-trailers

Detect duplicated Signed-off-by, Co-authored-by, and Relates-to Trailers.

Default status

On an empty repository

git mit-config lint status duplicated-trailers

╭─────────────────────┬─────────╮
│ Lint                ┆ Status  │
╞═════════════════════╪═════════╡
│ duplicated-trailers ┆ enabled │
╰─────────────────────┴─────────╯

Valid

Using message

Demonstration Commit Message

This is a commit message that has trailers and is valid

Co-authored-by: Billie Thompson <billie@example.com>
Signed-off-by: Someone Else <someone@example.com>

Committing will succeed

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Invalid

Using message

Demonstration Commit Message

This is a commit message that has trailers and is invalid

Co-authored-by: Billie Thompson <billie@example.com>
Co-authored-by: Billie Thompson <billie@example.com>
Signed-off-by: Someone Else <someone@example.com>
Signed-off-by: Someone Else <someone@example.com>
Relates-to: #315
Relates-to: #315

Committing will fail.

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Error: DuplicatedTrailers (https://git-scm.com/docs/githooks#_commit_msg)

  × Your commit message has duplicated trailers
    ╭─[6:1]
  5 │ Co-authored-by: Billie Thompson <billie@example.com>
  6 │ Co-authored-by: Billie Thompson <billie@example.com>
    · ──────────────────────────┬─────────────────────────
    ·                           ╰── Duplicated `Co-authored-by`
  7 │ Signed-off-by: Someone Else <someone@example.com>
  8 │ Signed-off-by: Someone Else <someone@example.com>
    · ────────────────────────┬────────────────────────
    ·                         ╰── Duplicated `Signed-off-by`
  9 │ Relates-to: #315
 10 │ Relates-to: #315
    · ────────┬───────
    ·         ╰── Duplicated `Relates-to`
    ╰────
  help: These are normally added accidentally when you're rebasing or
        amending to a commit, sometimes in the text editor, but often by
        git hooks.
        
        You can fix this by deleting the duplicated "Co-authored-by",
        "Relates-to", "Signed-off-by" fields

Git Manual Style

The style from the git book, that directly affects the operation of git:

subject-not-separated-from-body

If there is a body, enforce a gap between it and the subject.

Default status

On an empty repository

git mit-config lint status subject-not-separated-from-body

╭─────────────────────────────────┬─────────╮
│ Lint                            ┆ Status  │
╞═════════════════════════════════╪═════════╡
│ subject-not-separated-from-body ┆ enabled │
╰─────────────────────────────────┴─────────╯

Valid

Using message

Demonstration Commit Message

This is a commit message that is valid

Committing will succeed

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Invalid

Using message

Demonstration Commit Message
This is a commit message that is invalid

Committing will fail

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Error: SubjectNotSeparateFromBody (https://git-scm.com/book/en/v2/Distributed-Git-Contributing-to-a-Project#_commit_guidelines)

  × Your commit message is missing a blank line between the subject and the
  │ body
   ╭─[2:1]
 1 │ Demonstration Commit Message
 2 │ This is a commit message that is invalid
   · ────────────────────┬───────────────────
   ·                     ╰── Missing blank line
   ╰────
  help: Most tools that render and parse commit messages, expect commit
        messages to be in the form of subject and body. This includes git
        itself in tools like git-format-patch. If you don't include this you
        may see strange behaviour from git and any related tools.
        
        To fix this separate subject from body with a blank line

subject-longer-than-72-characters

After 72 characters, git will truncate commit messages in the history view, this prevents that

Default status

On an empty repository

git mit-config lint status subject-longer-than-72-characters

╭───────────────────────────────────┬─────────╮
│ Lint                              ┆ Status  │
╞═══════════════════════════════════╪═════════╡
│ subject-longer-than-72-characters ┆ enabled │
╰───────────────────────────────────┴─────────╯

Valid

Using message

cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Demonstration Commit Message
This is a commit message that is valid

Committing will succeed

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Invalid

Using message

ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Demonstration Commit Message
This is a commit message that is invalid

Committing will fail

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Error: SubjectLongerThan72Characters (https://git-scm.com/book/en/v2/Distributed-Git-Contributing-to-a-Project#_commit_guidelines)

  × Your subject is longer than 72 characters
   ╭─[1:73]
 1 │ ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
   ·                                                                         ┬
   ·                                                                         ╰── Too long
 2 │ 
   ╰────
  help: It's important to keep the subject of the commit less than 72
        characters because when you look at the git log, that's where it
        truncates the message. This means that people won't get the entirety
        of the information in your commit.
        
        Please keep the subject line 72 characters or under

body-wider-than-72-characters

After 72 characters, git will truncate commit messages in the history view, this prevents that

Default status

On an empty repository

git mit-config lint status body-wider-than-72-characters

╭───────────────────────────────┬─────────╮
│ Lint                          ┆ Status  │
╞═══════════════════════════════╪═════════╡
│ body-wider-than-72-characters ┆ enabled │
╰───────────────────────────────┴─────────╯

Valid

Using message

Demonstration Commit Message

cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
This is a commit message that is valid

Committing will succeed

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Invalid

Using message

Demonstration Commit Message

ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
This is a commit message that is invalid

Committing will fail

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Error: BodyWiderThan72Characters (https://git-scm.com/book/en/v2/Distributed-Git-Contributing-to-a-Project#_commit_guidelines)

  × Your commit has a body wider than 72 characters
   ╭─[3:73]
 2 │ 
 3 │ ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
   ·                                                                         ┬
   ·                                                                         ╰── Too long
 4 │ This is a commit message that is invalid
   ╰────
  help: It's important to keep the body of the commit narrower than 72
        characters because when you look at the git log, that's where it
        truncates the message. This means that people won't get the entirety
        of the information in your commit.
        
        You can fix this by making the lines in your body no more than 72
        characters

Git Manual Style Extended

The style from the git book, but that doesn't affect using git

subject-line-not-capitalized

Detect a subject line that is not capitalised

Default status

On an empty repository

git mit-config lint status subject-line-not-capitalized

╭──────────────────────────────┬──────────╮
│ Lint                         ┆ Status   │
╞══════════════════════════════╪══════════╡
│ subject-line-not-capitalized ┆ disabled │
╰──────────────────────────────┴──────────╯

Enabling

Enable it with

git mit-config lint enable subject-line-not-capitalized

Valid

Using message

Demonstration Commit Message

This is a commit message that is valid

Committing will succeed

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Invalid

Using message

demonstration Commit Message

This is a commit message that is invalid

Committing will fail

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Error: SubjectNotCapitalized (https://git-scm.com/book/en/v2/Distributed-Git-Contributing-to-a-Project#_commit_guidelines)

  × Your commit message is missing a capital letter
   ╭─[1:1]
 1 │ demonstration Commit Message
   · ┬
   · ╰── Not capitalised
 2 │ 
   ╰────
  help: The subject line is a title, and as such should be capitalised.
        
        You can fix this by capitalising the first character in the subject

Disabling

Disable it with

git mit-config lint disable subject-line-not-capitalized

subject-line-ends-with-period

Detect a subject line that is not capitalised

Default status

On an empty repository

git mit-config lint status subject-line-ends-with-period

╭───────────────────────────────┬──────────╮
│ Lint                          ┆ Status   │
╞═══════════════════════════════╪══════════╡
│ subject-line-ends-with-period ┆ disabled │
╰───────────────────────────────┴──────────╯

Enabling

Enable it with

git mit-config lint enable subject-line-ends-with-period

Valid

Using message

Demonstration Commit Message

This is a commit message that is valid

Committing will succeed

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Invalid

Using message

Demonstration Commit Message.

This is a commit message that is invalid

Committing will fail

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Error: SubjectEndsWithPeriod (https://git-scm.com/book/en/v2/Distributed-Git-Contributing-to-a-Project#_commit_guidelines)

  × Your commit message ends with a period
   ╭─[1:29]
 1 │ Demonstration Commit Message.
   ·                             ┬
   ·                             ╰── Unneeded period
 2 │ 
   ╰────
  help: It's important to keep your commits short, because we only have a
        limited number of characters to use (72) before the subject line
        is truncated. Full stops aren't normally in subject lines, and take
        up an extra character, so we shouldn't use them in commit message
        subjects.
        
        You can fix this by removing the period

Disabling

Disable it with

git mit-config lint disable subject-line-ends-with-period

Conventional Commits

not-conventional-commit

The conventional changelog is a scheme of commit messages used to allow for automation of changelog generation and releases. It's particularly useful for monorepos.

Default status

On an empty repository

git mit-config lint status not-conventional-commit

╭─────────────────────────┬──────────╮
│ Lint                    ┆ Status   │
╞═════════════════════════╪══════════╡
│ not-conventional-commit ┆ disabled │
╰─────────────────────────┴──────────╯

Enabling

Enable it with

git mit-config lint enable not-conventional-commit

Valid

Using message

fix: correct minor typos in code

see the issue for details

on typos fixed.

Reviewed-by: Z
Refs #133

Committing will succeed

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Invalid

Using message

Demonstration Commit Message

This is a commit message that is invalid

Committing will fail

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Error: NotConventionalCommit (https://www.conventionalcommits.org/)

  × Your commit message isn't in conventional style
   ╭─[1:1]
 1 │ Demonstration Commit Message
   · ──────────────┬─────────────
   ·               ╰── Not conventional
 2 │ 
   ╰────
  help: It's important to follow the conventional commit style when creating
        your commit message. By using this style we can automatically
        calculate the version of software using deployment pipelines, and
        also generate changelogs and other useful information without human
        interaction.
        
        You can fix it by following style
        
        <type>[optional scope]: <description>
        
        [optional body]
        
        [optional footer(s)]

Disabling

Disable it with

git mit-config lint disable not-conventional-commit

Issue ID Checks

Check for the presence of issue Ids

pivotal-tracker-id-missing

Check for the presence of a Pivotal Tracker ID

Default status

On an empty repository

git mit-config lint status pivotal-tracker-id-missing

╭────────────────────────────┬──────────╮
│ Lint                       ┆ Status   │
╞════════════════════════════╪══════════╡
│ pivotal-tracker-id-missing ┆ disabled │
╰────────────────────────────┴──────────╯

Enabling

Enable it with

git mit-config lint enable pivotal-tracker-id-missing

Valid

Using message

Demonstration Commit Message

This is a commit message that is valid

[#12345884]
# some comment

Committing will succeed

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Invalid

Using message

demonstration Commit Message

This is a commit message that is invalid

Committing will fail

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Error: PivotalTrackerIdMissing (https://www.pivotaltracker.com/help/api?version=v5#Tracker_Updates_in_SCM_Post_Commit_Hooks)

  × Your commit message is missing a Pivotal Tracker ID
   ╭─[3:1]
 2 │ 
 3 │ This is a commit message that is invalid
   · ────────────────────┬───────────────────
   ·                     ╰── No Pivotal Tracker ID
   ╰────
  help: It's important to add the ID because it allows code to be linked
        back to the stories it was done for, it can provide a chain
        of custody for code for audit purposes, and it can give future
        explorers of the codebase insight into the wider organisational need
        behind the change. We may also use it for automation purposes, like
        generating changelogs or notification emails.
        
        You can fix this by adding the Id in one of the styles below to the
        commit message
        [Delivers #12345678]
        [fixes #12345678]
        [finishes #12345678]
        [#12345884 #12345678]
        [#12345884,#12345678]
        [#12345678],[#12345884]
        This will address [#12345884]

Disabling

Disable it with

git mit-config lint disable pivotal-tracker-id-missing

jira-issue-key-missing

Check for the presence of a JIRA Issue Key

Default status

On an empty repository

git mit-config lint status jira-issue-key-missing

╭────────────────────────┬──────────╮
│ Lint                   ┆ Status   │
╞════════════════════════╪══════════╡
│ jira-issue-key-missing ┆ disabled │
╰────────────────────────┴──────────╯

Enabling

Enable it with

git mit-config lint enable jira-issue-key-missing

Valid

Using message

Demonstration Commit Message

This is a commit message that is valid

JRA-123

Committing will succeed

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Invalid

Using message

demonstration Commit Message

This is a commit message that is invalid

Committing will fail

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Error: JiraIssueKeyMissing (https://support.atlassian.com/jira-software-cloud/docs/what-is-an-issue/#Workingwithissues-Projectkeys)

  × Your commit message is missing a JIRA Issue Key
   ╭─[3:1]
 2 │ 
 3 │ This is a commit message that is invalid
   · ────────────────────┬───────────────────
   ·                     ╰── No JIRA Issue Key
   ╰────
  help: It's important to add the issue key because it allows us to link
        code back to the motivations for doing it, and in some cases provide
        an audit trail for compliance purposes.
        
        You can fix this by adding a key like `JRA-123` to the commit
        message

Disabling

Disable it with

git mit-config lint disable jira-issue-key-missing

github-id-missing

Check for the presence of a GitHub ID

Default status

On an empty repository

git mit-config lint status github-id-missing

╭───────────────────┬──────────╮
│ Lint              ┆ Status   │
╞═══════════════════╪══════════╡
│ github-id-missing ┆ disabled │
╰───────────────────┴──────────╯

Enabling

Enable it with

git mit-config lint enable github-id-missing

Valid

Using message

Demonstration Commit Message

This is a commit message that is valid

GH-123

Committing will succeed

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Invalid

Using message

demonstration Commit Message

This is a commit message that is invalid

Committing will fail

echo $RANDOM > changes
git add changes
git commit --message="$(cat message)"

Error: GitHubIdMissing (https://docs.github.com/en/github/writing-on-github/working-with-advanced-formatting/autolinked-references-and-urls#issues-and-pull-requests)

  × Your commit message is missing a GitHub ID
   ╭─[3:1]
 2 │ 
 3 │ This is a commit message that is invalid
   · ────────────────────┬───────────────────
   ·                     ╰── No GitHub ID
   ╰────
  help: It's important to add the issue ID because it allows us to link code
        back to the motivations for doing it, and because we can help people
        exploring the repository link their issues to specific bits of code.
        
        You can fix this by adding a ID like the following examples:
        
        #642
        GH-642
        AnUser/git-mit#642
        AnOrganisation/git-mit#642
        fixes #642
        
        Be careful just putting '#642' on a line by itself, as '#' is the
        default comment character

Disabling

Disable it with

git mit-config lint disable github-id-missing

Files

index.md

Latest commit

History

index.md

File metadata and controls

Index of Lints

Setup

Lint list

Trailers

duplicated-trailers

Default status

Valid

Invalid

Git Manual Style

subject-not-separated-from-body

Default status

Valid

Invalid

subject-longer-than-72-characters

Default status

Valid

Invalid

body-wider-than-72-characters

Default status

Valid

Invalid

Git Manual Style Extended

subject-line-not-capitalized

Default status

Enabling

Valid

Invalid

Disabling

subject-line-ends-with-period

Default status

Enabling

Valid

Invalid

Disabling

Conventional Commits

not-conventional-commit

Default status

Enabling

Valid

Invalid

Disabling

Issue ID Checks

pivotal-tracker-id-missing

Default status

Enabling

Valid

Invalid

Disabling

jira-issue-key-missing

Default status

Enabling

Valid

Invalid

Disabling

github-id-missing

Default status

Enabling

Valid

Invalid

Disabling