commandserver: drop tell() and seek() from channels (
issue5049)
These operations are obviously invalid for file-like channels because they
will read or write protocol headers.
This patch works around the issue that "hg archive" generates a corrupted
zip file on Windows commandserver because of unusable tell() implementation.
But the problem still occurs without using a commandserver.
$ hg archive -R not-small-repo -t zip - | cat > invalid.zip
So, this patch cannot fix the
issue5049 completely.
$ rm -rf a
$ hg init a
$ cd a
$ echo a > a
$ hg ci -Am0
adding a
$ hg tag t1 # 1
$ hg tag --remove t1 # 2
$ hg co 1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg tag -f -r0 t1
$ hg tags
tip 3:a49829c4fc11
t1 0:f7b1eb17ad24
$ cd ..