util.copyfiles: don't try os_link() again if it failed before
If the os_link() call on the first file in the directory fails [1],
we switch mode to using shutil.copy() for all remaining files.
[1] happens for example on Windows for every file when cloning from a UNC
path without specifying --pull.
#!/bin/sh
hg init
echo a > a
hg ci -Amadd # 0
chmod +x a
hg ci -mexecutable # 1
hg up 0
rm a
ln -s symlink a
hg ci -msymlink # 2
hg merge --debug
echo % symlink is local parent, executable is other
if [ -h a ]; then
echo a is a symlink
$TESTDIR/readlink.py a
elif [ -x a ]; then
echo a is executable
else
echo "a has no flags (default for conflicts)"
fi
hg update -C 1
hg merge --debug
echo % symlink is other parent, executable is local
if [ -h a ]; then
echo a is a symlink
$TESTDIR/readlink.py a
elif [ -x a ]; then
echo a is executable
else
echo "a has no flags (default for conflicts)"
fi