CODEWITHSUNDEEP
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uvsmtid
uvsmtid

Reputation: 4295

Show effective/actual author and committer used by Git

Is there a Git command to display author and committer which would be used in the next commit based on all configuration sources applied?

One of the reason for this question is that I cannot find username (committer reported in example below) in any of the files:

grep -r obsdev .git/config ~/.gitconfig /etc/gitconfig
# no output

Apparently, there is another configuration source.

The point is that I don't want to learn about any possible configuration source existing now, or in the future, or order in which they apply and override each other. Instead, I want to let Git figure out and display final/effective author/committer values.

Example

Under some conditions (like command line option --author) Git displays commented out Author: and Committer: fields in editor for commit message:

# Please enter the commit message for your changes. Lines starting              
# with '#' will be ignored, and an empty message aborts the commit.             
#                                                                               
# Author:    First Last <[email protected]>                               
# Committer: username <[email protected]>                              
#   
...

Is there a way to show these fields without trying to make a commit?

Alternatively, is it possible to force Git provide comments containing Author: and Committer: fields in the commit message editor under any circumstances without any command line options even when defaults are used (without overriding defaults)?

Upvotes: 3

Views: 1850

Answers (2)

Roman
Roman

Reputation: 6646

You can use git var:

# show the author (sed is there to strip the timestamp)
git var GIT_AUTHOR_IDENT | sed -r 's/( [^ ]+){2}$//'
# and the committer
git var GIT_COMMITTER_IDENT | sed -r 's/( [^ ]+){2}$//'

But if you haven't configured your name and email, it will print a warning instead of giving a value. A workaround would be:

# show the author
git var -l | grep -E '^GIT_AUTHOR_IDENT=' | sed -r 's/^[^=]+=//;s/( [^ ]+){2}$//'
# and the committer
git var -l | grep -E '^GIT_COMMITTER_IDENT=' | sed -r 's/^[^=]+=//;s/( [^ ]+){2}$//'

Upvotes: 4

knittl
knittl

Reputation: 265161

I'm not aware of any built in way to do that in Git. Git uses the config values user.name and user.email, which can be overridden by the environment variables $GIT_{COMMITTER,AUTHOR}_{NAME,EMAIL}.

A simple shell script should get you the info you want:

NAME=$(git config user.name)
EMAIL=$(git config user.email)

echo "Author:    ${GIT_AUTHOR_NAME:-$NAME} <${GIT_AUTHOR_EMAIL:-$EMAIL}>
echo "Committer: ${GIT_COMMITTER_NAME:-$NAME} <${GIT_COMMITTER_EMAIL:-$EMAIL}>"

See also git whoami

Upvotes: 1

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