I want to check which merge tool my git is set to - I just don't remember the name. I know I can wait till the next merge opportunity to run it via git merge tool and see what was it, but I'd like to type something like git mergetool status to see what is the tool (and what is the version, for instance).
to see what git resolves as the difftool, over the different config files:
git config --get merge.tool
If the result is not a builtin, then to see how it is configured:
git config --get mergetool.THE_MERGE_TOOL.cmd
git config --get mergetool.THE_MERGE_TOOL.trustexitcode
see git help config