Module pull_rebase 

pre-push-pull-rebase — sync a branch with ITS OWN upstream before pushing, and warn (never act) when the default branch has moved ahead.

The hardening in the shell version is the point, and is preserved exactly: an older version ran git pull --rebase origin HEAD, where the remote ref HEAD resolves to the remote’s DEFAULT branch — so every push silently rebased onto main, autostashing uncommitted work. Hence: never touch a dirty tree, rebase only onto the branch’s own upstream, and abort cleanly on conflict rather than leaving a half-rebased state.

Functions

ahead_count

Left side of git rev-list --left-right --count <a>...<b>: how far the default branch is ahead of us.

behind_count

behind[[:space:]]+N over git status -sb, present or not — UNLIKE divergence, which only answers when ahead is ALSO on the line.

divergence

lists_branch

^[[:space:]*+]+<name>$ over git branch output — the indentation git always prints, plus the markers it puts in column 0.

run