LC_ALL=C hg help branches
hg branches [-ac]

list repository named branches

    List the repository's named branches, indicating which ones are inactive.
    If -c/--closed is specified, also list branches which have been marked
    closed (see "hg commit --close-branch").

    Use the command "hg update" to switch to an existing branch.

    Returns 0.

options:

 -c --closed show normal and closed branches
    --mq     operate on patch repository

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