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@ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION
REM Batch file output: %GIT_REV% variable, containing the git revision
REM Use tgit.exe of TortoiseGit if available
SET GITEXE="tgit.exe"
%GITEXE% --version > NUL 2>&1
IF errorlevel 1 GOTO :notgit
GOTO :extract
:notgit
REM Fallback on msysgit - must be in the path
SET GITEXE="git.exe"
%GITEXE% --help > NUL 2>&1
IF errorlevel 1 GOTO :nogit
GOTO :extract
:nogit
REM Failure - no git tool to extract information.
SET GIT_REV=Unknown
GOTO :done
:extract
SET /a counter=0
FOR /F "tokens=1-4 delims=-" %%A IN ('"%GITEXE% log --summary --abbrev=7 -n 1 --date=short --pretty=format:"%%cd-%%h""') DO (
IF "!counter!"=="0" ( SET GIT_REV=%%A%%B%%C-%%D ) ELSE ( goto exitloop )
SET /a counter+=1
)
:exitloop
echo %GIT_REV%
:done
SET GITEXE=
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