all: treat all files as binary, but check in .bat with CRLF

This is a followup to CL 96495.

It should be simpler and more robust to achieve .bat files having
CRLF line endings by treating it as a binary file, like all other
files, and checking it in with the desired CRLF line endings.

A test is used to check the entire Go tree, short of directories
starting with "." and named "testdata", for any .bat files that
have anything other than strict CRLF line endings. This will help
catch any accidental modifications to existing .bat files or check
ins of new .bat files.

Importantly, this is compatible with how Gerrit serves .tar.gz files,
making it so that CRLF line endings are preserved.

The Go project is supported on many different environments, some of
which may have limited git implementations available, or none at all.
Relying on fewer git features and special rules makes it easier to
have confidence in the exact content of all files. Additionally, Go
development started in Subversion, moved to Perforce, then Mercurial,
and now uses Git.¹ Reducing its reliance on git-specific features will
help if there will be another transition in the project's future.

There are only 5 .bat files in the entire Go source tree, so a new one
being added is a rare event, and we prefer to do things in Go instead.
We still have the option of improving the experience for developers by
adding a pre-commit converter for .bat files to the git-codereview tool.

¹ https://groups.google.com/d/msg/golang-dev/sckirqOWepg/YmyT7dWJiocJ

Fixes #39391.
For #37791.

Change-Id: I6e202216322872f0307ac96f1b8d3f57cb901e6b
Reviewed-on: https://go-review.googlesource.com/c/go/+/236437
Reviewed-by: Bryan C. Mills <bcmills@google.com>

1 files changed, 27 insertions, 27 deletions

diff --git a/src/all.bat b/src/all.bat
index 8bbd6b1b5d..ae835d992f 100644
--- a/src/all.bat
+++ b/src/all.bat
@@ -1,27 +1,27 @@
-:: Copyright 2012 The Go Authors. All rights reserved.
-:: Use of this source code is governed by a BSD-style
-:: license that can be found in the LICENSE file.
-
-@echo off
-
-setlocal
-
-if exist make.bat goto ok
-echo all.bat must be run from go\src
-:: cannot exit: would kill parent command interpreter
-goto end
-:ok
-
-set OLDPATH=%PATH%
-call make.bat --no-banner --no-local
-if %GOBUILDFAIL%==1 goto end
-call run.bat --no-rebuild --no-local
-if %GOBUILDFAIL%==1 goto end
-:: we must restore %PATH% before running "dist banner" so that the latter
-:: can get the original %PATH% and give suggestion to add %GOROOT%/bin
-:: to %PATH% if necessary.
-set PATH=%OLDPATH%
-"%GOTOOLDIR%/dist" banner
-
-:end
-if x%GOBUILDEXIT%==x1 exit %GOBUILDFAIL%
+:: Copyright 2012 The Go Authors. All rights reserved.

+:: Use of this source code is governed by a BSD-style

+:: license that can be found in the LICENSE file.

+

+@echo off

+

+setlocal

+

+if exist make.bat goto ok

+echo all.bat must be run from go\src

+:: cannot exit: would kill parent command interpreter

+goto end

+:ok

+

+set OLDPATH=%PATH%

+call make.bat --no-banner --no-local

+if %GOBUILDFAIL%==1 goto end

+call run.bat --no-rebuild --no-local

+if %GOBUILDFAIL%==1 goto end

+:: we must restore %PATH% before running "dist banner" so that the latter

+:: can get the original %PATH% and give suggestion to add %GOROOT%/bin

+:: to %PATH% if necessary.

+set PATH=%OLDPATH%

+"%GOTOOLDIR%/dist" banner

+

+:end

+if x%GOBUILDEXIT%==x1 exit %GOBUILDFAIL%