="_p4_prepare_changelist">p4-prepare-changelist</h3>
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<p>This hook is invoked by <code>git-p4 submit</code>.</p>
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<p>The <code>p4-prepare-changelist</code> hook is executed right after preparing
the default changelist message and before the editor is started.
It takes one parameter, the name of the file that contains the
changelist text. Exiting with a non-zero status from the script
will abort the process.</p>
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<p>The purpos