fix: new extension for automatically modifying file contents
This change implements most of the corresponding proposal as discussed at the
4.4 and 4.6 sprints: https://www.mercurial-scm.org/wiki/AutomaticFormattingPlan
This change notably does not include parallel execution of the formatter/fixer
tools. It does allow for implementing that without affecting other areas of the
code.
I believe the test coverage to be good, but this is a hotbed of corner cases.
Differential Revision: https://phab.mercurial-scm.org/D2897
#require clang-format
Test that a simple "hg fix" configuration for clang-format works.
$ cat >> $HGRCPATH <<EOF
> [extensions]
> fix =
> [experimental]
> evolution.createmarkers=True
> evolution.allowunstable=True
> [fix]
> clang-format:command=clang-format --style=Google --assume-filename={rootpath}
> clang-format:linerange=--lines={first}:{last}
> clang-format:fileset=set:**.cpp or **.hpp
> EOF
$ hg init repo
$ cd repo
$ printf "void foo(){int x=2;}\n" > foo.cpp
$ printf "void\nfoo();\n" > foo.hpp
$ hg commit -Am "foo commit"
adding foo.cpp
adding foo.hpp
$ hg cat -r tip *
void foo(){int x=2;}
void
foo();
$ hg fix -r tip
$ hg cat -r tip *
void foo() { int x = 2; }
void foo();
$ cd ..