Currently when choosing any of the other output formats it's not possible to get the text report printed to stdout or even a file.

I've tried the following, but neither work.

$ gcovr --sonarqube coverage.xml --output
usage: gcovr [options] [search_paths...]
gcovr: error: argument -o/--output: expected one argument
$ gcovr --sonarqube coverage.xml --output -
(WARNING) --output='-' op

If I understood the docs correctly, --disable-coverage-init is supposed to allow updating already existing coverage information with new test cases. However, I was unable to make it work, since it either complains that an existing cov directory was found or, if told to overwrite the directory with -O, it says /tmp/afl-ramdisk/out/cov/lcov/trace.lcov_info_final.

Could you add an example