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8cd5f1f058
MSys2's strace facility is very useful for debugging... With this patch, the bash will be executed through strace if the environment variable GIT_STRACE_COMMANDS is set, which comes in real handy when investigating issues in the test suite. Also support passing a path to a log file via GIT_STRACE_COMMANDS to force Git to call strace.exe with the `-o <path>` argument, i.e. to log into a file rather than print the log directly. That comes in handy when the output would otherwise misinterpreted by a calling process as part of Git's output. Note: the values "1", "yes" or "true" are *not* specifying paths, but tell Git to let strace.exe log directly to the console. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>