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Improve check on git-svnrevert, better error message

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When the commit is not in the tree at all, find-rev returns 0
and prints an empty string. We need to catch that problem too,
when trying to revert.

Adding a list of possible problems, so that you can easily and
quickly correct without having to edit the script again.

llvm-svn: 237516
This commit is contained in:
Renato Golin 2015-05-16 10:23:48 +00:00
parent 93e883ed9f
commit c87f190902
1 changed files with 6 additions and 1 deletions
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7
utils/git-svn/git-svnrevert
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@ -14,8 +14,13 @@ fi
COMMIT=$1
OTHER=$(git svn find-rev "$COMMIT")
if [ $? -ne 0 ]; then
if [ $? -ne 0 ] || [ "$OTHER" = "" ]; then
echo "Error! Could not find an svn/git revision for commit $COMMIT!"
echo
echo "Possible problems are:"
echo " * Your revision number ($COMMIT) is wrong"
echo " * This tree is not up to date (before that commit)"
echo " * This commit in in another three (llvm, clang, compiler-rt, etc)"
exit 1
fi