mirror of https://github.com/nirenjan/dotfiles.git
29 lines
673 B
Bash
Executable File
29 lines
673 B
Bash
Executable File
#!/bin/bash
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#
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# Support script to find the commit from which the given branch was spawned.
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# Takes one or two arguments, the first argument is mandatory and specifies
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# the child branch while the second argument is optional and specifies the
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# parent branch. If omitted, the parent branch defaults to 'master'
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CHILD=$1
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PARENT=$2
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USAGE="Usage: $0 <child branch> <parent branch>"
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if [ "$CHILD" == "" ]
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then
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echo $USAGE
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exit
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fi
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if [ "$PARENT" == "" ]
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then
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PARENT="master"
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fi
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PCOMMIT=`diff -u <(git rev-list --first-parent $CHILD) \
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<(git rev-list --first-parent $PARENT) | sed -ne 's/^ //p' | head -1`
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git show --pretty="%H %an | %s" $PCOMMIT | head -1
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