view relnotes/5.2 @ 49087:e160f073c37b

histedit: use new function for getting first line of a string

This fixes a crash you can run into if you enter a commit message
that's just a "newline-like" byte, like a form feed byte (`hg ci -m
\x0f` in Fish). That bug is the motivation for this series.

Differential Revision: https://phab.mercurial-scm.org/D12405

== New Features ==

 * The amend extension supports the `--currentuser` argument.

 * The amend extension supports the `--close-branch` argument.

 * The amend extension supports the `--secret` argument.

 * The uncommit extension supports the `rewrite.update-timestamp` config option.

== New Experimental Features ==


== Bug Fixes  ==


== Backwards Compatibility Changes ==

 * A shell that supports `$(command)`` syntax for command substitution is now
   required for running the test suite. The test runner normally uses
   `sh`, so if that is a shell that doesn't support `$(command)` syntax,
   you can override it by setting `$HGTEST_SHELL` or by passing it to
   `run-tests.py --shell <shell>`.

 * The (experimental) narrow extension's wire protocol changed. If
   you're using it, you'll need to make sure to upgrade server and
   client at the same time.

== Internal API Changes ==