tests/test-check-encoding.t

emitrevision: if we need to compute a delta on the fly, try p1 or p2 first

Falling back to `prev` does not yield any real value on modern storage and
result in pathological changes to be created on the other side. Doing a delta
against a parent will likely be smaller (helping the network) and will be safer
to apply on the client (helping future pulls by Triggering intermediate
snapshop where they will be needed by later deltas).

#require test-repo hg10

  $ . "$TESTDIR/helpers-testrepo.sh"

  $ cat > $TESTTMP/check_ascii.py <<EOF
  > import sys
  > for file_path in sys.argv[1:]:
  >     with open(file_path, 'br') as f:
  >         try:
  >             f.read().decode('ascii', 'strict')
  >         except UnicodeDecodeError as exc:
  >             print('%s: %s' % (file_path, exc))
  > EOF

There are some web servers in the wild that can serve static files with an
incorrect encoding (e.g. https://bz.mercurial-scm.org/show_bug.cgi?id=6559).
One way to prevent any issues is to not use any non-ASCII characters, e.g.
URL-encoding them or using HTML entities.

check charset of all tracked files ending in .js

  $ cd "`dirname "$TESTDIR"`"

  $ testrepohg locate 'set:**.js' \
  > 2>/dev/null \
  > | xargs "$PYTHON" $TESTTMP/check_ascii.py