Question

I am using the following code to detect if the folder .hg exists in the current directory. If it doesn’t, then the function returns:

if [ ! -d ".hg" ]; then
  return
fi

How can I modify this to check if .hg exists either in the current directory or in a parent / ancestor directory? I’d imagine if it isn’t an option such as -d then the solution is going to be recursive.

Answer 1

I’d just cheat on this one:

if ! hg status > /dev/null 2>&1; then
    return
fi

hg status should be successful as long as you are somewhere inside a mercurial tree.