ref: 733c5d6645b133b60d304c38fcb1398f94d0618c
dir: /sys/src/cmd/git/test/lca.rc/
#!/bin/rc . util.rc rm -fr scratch mkdir -p scratch cd scratch echo @@ test lca @@ @{ q $G/init a cd a echo 'first' > f q $G/add f q $G/commit -m base f r=`{$G/$O.query HEAD} echo 0 > f q $G/commit -m a.0 . a=`{$G/$O.query HEAD} for(i in `{seq 10}){ echo $i > f q $G/commit -m a.$i . } q $G/branch -nb $r merge echo x > f q $G/commit -m b.0 . b=`{$G/$O.query HEAD} qq $G/merge front q $G/commit -m merge . m=`{$G/$O.query HEAD} ~ `{$G/$O.query $a $m @} $a || die lca a-m ~ `{$G/$O.query $a $b @} $r || die lca a-b ~ `{$G/$O.query $a $r @} $r || die lca a-r } # a # ↓ # b→c→d→e→f # # date order (oldest to newest): f d c b e a echo @@ test lca rebase @@ @{ q $G/init b cd b touch f fn commit { $G/$O.save -n regress -e regress $* f } f=`{commit -m f -d 1} e=`{commit -m e -d 5 -p $f} d=`{commit -m d -d 2 -p $e} c=`{commit -m c -d 3 -p $d} b=`{commit -m b -d 4 -p $c} a=`{commit -m a -d 6 -p $e} ~ `{$G/$O.query $a $b @} $e || die lca a-b ~ `{$G/$O.query $b $a @} $e || die lca b-a }