diff options
Diffstat (limited to 'guix')
| -rw-r--r-- | guix/git.scm | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/guix/git.scm b/guix/git.scm index d7dddde3a7..83af596ef5 100644 --- a/guix/git.scm +++ b/guix/git.scm @@ -347,10 +347,11 @@ Log progress and checkout info to LOG-PORT." ;;; Commit difference. ;;; -(define (commit-closure commit) - "Return the closure of COMMIT as a set." +(define* (commit-closure commit #:optional (visited (setq))) + "Return the closure of COMMIT as a set. Skip commits contained in VISITED, +a set, and adjoin VISITED to the result." (let loop ((commits (list commit)) - (visited (setq))) + (visited visited)) (match commits (() visited) @@ -360,15 +361,16 @@ Log progress and checkout info to LOG-PORT." (loop (append (commit-parents head) tail) (set-insert head visited))))))) -(define (commit-difference new old) +(define* (commit-difference new old #:optional (excluded '())) "Return the list of commits between NEW and OLD, where OLD is assumed to be -an ancestor of NEW. +an ancestor of NEW. Exclude all the commits listed in EXCLUDED along with +their ancestors. Essentially, this computes the set difference between the closure of NEW and that of OLD." (let loop ((commits (list new)) (result '()) - (visited (commit-closure old))) + (visited (commit-closure old (list->setq excluded)))) (match commits (() (reverse result)) |