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commit: save commit message so it's not destroyed by rollback....
commit: save commit message so it's not destroyed by rollback. (issue1635) Rationale: if a pretxncommit hook rejects this commit, the transaction is rolled back and the user's commit message is irrevocably lost. So save a copy in .hg/last-message.txt, just in case. Also handy if the user deliberately rolls back a commit in order to amend it.
Greg Ward - - Load All Authors

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r9934:720f70b7 default
r9934:720f70b7 default
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test-rollback
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#!/bin/sh
mkdir t
cd t
hg init
echo a > a
hg add a
hg commit -m "test" -d "1000000 0"
hg verify
hg parents
hg status
hg rollback
hg verify
hg parents
hg status
echo % Test issue 902
hg commit -m "test2"
hg branch test
hg rollback
hg branch
echo '% Test issue 1635 (commit message saved)'
echo '.hg/last-message.txt:'
cat .hg/last-message.txt
echo % Test rollback of hg before issue 902 was fixed
hg commit -m "test3"
hg branch test
rm .hg/undo.branch
hg rollback
hg branch
echo '% rollback by pretxncommit saves commit message (issue 1635)'
echo a >> a
hg --config hooks.pretxncommit=/bin/false commit -m"precious commit message"
echo '.hg/last-message.txt:'
cat .hg/last-message.txt