No custom formatter for exec_program()

[adriaandegroot]

There is no custom formatter for exec_program(), so the arguments are not indented at all.

For instance, this input remains unchanged:

macro(GET_PROJECT_GIT_VERSION)
    find_package(Git QUIET)
    if(Git_FOUND)
        message(STATUS "Looking for git-versioning information.")
        exec_program(
            ${GIT_EXECUTABLE}
            ${CMAKE_CURRENT_SOURCE_DIR}
            ARGS
            describe
            --tags
            --match
            'v[0-9]*.*.*'
            --dirty
            OUTPUT_VARIABLE
            GIT_VERSION_INFO
            RETURN_VALUE
            GIT_ERROR
        )
    endif()
endmacro()

I would expect ARGS to be indented (muti-value option) and OUTPUT_VARIABLE and RETURN_VALUE to pull their single argument onto their own line.

[adriaandegroot]

The exec_program() command has been deprecated since CMake 3.0 and is superceded by execute_process() which is correctly formatted. It's actually a good thing gersemi doesn't format it, it's a sign it should be replaced in the CMake code that is being formatted.

I'm filing this issue so that it can be closed as "not supporting deprecated methods" -- just in case people complain about it. Since there's a lot of _uninstall.cmake examples floating around that use exec_program(), it might come up occasionally.

[BlankSpruce]

With your finding it occurred to me now that I haven't specified anywhere that only CMake 3 is supported. I'll improve README about that since it's kind of significant detail. Thanks for letting me know.

[BlankSpruce]

Here it is: 69bacb2