ui: do not try readline support if fin/fout aren't standard streams It's unlikely for a non-stdio stream to be a tty. Minimizing readline support makes it much simpler to work around the unicode input() function of Python 3. This also works on chg which duplicates client's tty to stdio fds.

util: add public isstdin/isstdout() functions

ui: add debug commands to test interactive prompt Interactive operations aren't easily covered by tests. So let's add commands to test them manually.

ui: inline util.bytesinput() into ui._readline() Prepares for rework of Python 3 support, which is currently broken due to read-ahead buffer of TextIOWrapper.

hgk: stop using util.bytesinput() to read a single line from stdin Appears that the stdio here is an IPC channel between hg and hgk (tk) processes, which shouldn't need a fancy readline support.

bookmarks: test for exchanging long bookmark names (issue5165) As far as I can tell a test for a long bookmark name never actually got added when this was fixed. Let's document that a 300 byte bookmark is something we're supporting (this patch started out life over a year ago as a way for me to validate the problem, and I recently found it.) I think the nonzero exits from the push operations are only because no new changesets get exchanged. Please correct me if I'm wrong on that. :) Differential Revision: https://phab.mercurial-scm.org/D2727

phabricator: follow-up phab auth improvements with backwards compat mode We'll rip this out before we ship 4.6, but this gives people a window to migrate. Differential Revision: https://phab.mercurial-scm.org/D2703

phabricator: specify API tokens per host, rather than per repo Differential Revision: https://phab.mercurial-scm.org/D1919

py3: drop b'' from generate-working-copy-states.py output I could make everything bytes, but decoding filename seemed easier and we don't have to worry about non-ascii filenames here.

py3: make test-commit-multiple.t byte-safe