How to open git difftool for multiple files in a single Bcomp3 window?

Question

When using git difftool --tool=bc3 from Git-Bash I got a BC3 window for each file. But to see the next window I had to close the previous one.

I wanted to see all diffed files at the same time as tabs in a single BC3 window.

Answer 1

I found the right hint on StackOverflow: #17736427.
Using git difftool --dir-diff (having BC3 configured as difftool) is OK for me.
Who wants to use this, may find the BC3 switch /expandall helpful.

My previous solution was, to call git-difftool recursively.
May be this trick is helpful for someone else. So I want to share it here.

Change your git-config like this:

[difftool "bc3_all"] cmd = "git difftool --tool=bc3_single \"$REMOTE\" &" [difftool "bc3_single"] cmd = "bcomp \"$REMOTE\" \"$LOCAL\""

My first attempt was to start BC3 directly as a background process:

[difftool "bc3"] cmd = "bcomp \"$REMOTE\" \"$LOCAL\" &"

It did not work, because $LOCAL is usually a temparary file.
When the BC3 window(s) show up, the $LOCAL file is already deleted.

Answer 2

Edit .gitconfig, add below line to [alias] section.

dt = difftool --dir-diff --no-symlinks

run git dt to check all differences.

Reference: https://forum.scootersoftware.com/forum/beyond-compare-4-discussion/version-control-aa/84141-get-bc4-to-open-all-windows-instead-of-one-at-a-time-with-git-difftool