wireprotoserver: ensure that output stream gets flushed on exception
Previously flush was happening due to Python finalizer being run on
`BufferedWriter`. With upgrade to Python 3.11 this started randomly
failing.
My guess is that the finalizer on the raw `FileIO` object may
be running before the finalizer of `BufferedWriter` has a chance to run.
At any rate, since we're not relying on finalizers in the happy case
we should also not rely on them in case of exception.
#require no-windows
$ . "$TESTDIR/remotefilelog-library.sh"
$ hg init master
$ cd master
$ cat >> .hg/hgrc <<EOF
> [remotefilelog]
> server=True
> EOF
$ echo x > x
$ hg commit -qAm x
$ echo y >> x
$ hg commit -qAm y
$ echo z >> x
$ hg commit -qAm z
$ echo a > a
$ hg commit -qAm a
$ cd ..
$ hgcloneshallow ssh://user@dummy/master shallow -q
2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)
$ cd shallow
Test blame
$ hg blame x
0: x
1: y
2: z
2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)
Test grepping the working directory.
$ hg grep --all-files x
x:x
$ echo foo >> x
$ hg grep --all-files x
x:x