Continuing after #313, would it be possible to add support for shell-style expansion of ~ or $(HOME) variables in the
path to diff-highlight in tigrc?

For example when I set:

set diff-highlight = ~/.config/git/diff-highlight

tig cannot find the diff-highlight program. It needs the expanded absolute path to find it or find it in $PATH.

The reason I ask if this is possible is I don't want to change my $PATH from the default and do not want to have root access to put diff-highlight somewhere in system-wide $PATH.

I checked and git itself can expand the program paths set in [pager] section of git config. So this might not be a bad idea after all.

Cheers.