Named stages as git checkout-index parameters - 


git checkout-index --help

says

--stage=|all instead of checking out unmerged entries, copy out files named stage. must between 1 , 3. note: --stage=all automatically implies --temp.

i understand "named stages" corresponding numbers 1 3?

the git merge manpage eplains:

for conflicting paths, index file records 3 versions: stage 1 stores version common ancestor, stage 2 head, , stage 3 merge_head (you can inspect stages git ls-files -u). working tree files contain result of "merge" program; i.e. 3-way merge results familiar conflict markers <<< === >>>.


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