git range-diff — compare two sequences of commits patch by patch

git-range-diff.sh

# git range-diff — diff of diffs
# Verify a rebase didn't silently mangle any patches.

# Compare two parallel sequences of commits from a common base:
git range-diff main@{1} main feature-branch

# Output per commit pair:
#   1:  <sha1>  =  1:  <sha2>  feat: add auth
#   2:  <sha1>  !  2:  <sha2>  feat: add routes   ← ! means patches differ
#
# = means equivalent. ! opens the inner diff inline.

# After a rebase — verify nothing drifted:
git range-diff main@{1} main my-branch

# Compare two branch sequences from a shared ancestor tag:
git range-diff v1.0.0..polish/v1 v1.0.0..polish/v2