Mercurial：如何提取和更新到特定标签

Question

I would like to pull the latest changesets from a remote repository and at the same time, update my local repo to a certain tag . Something similar as hg fetch or hg pull -u , but with an update to a tag. In two lines of code, this is:

hg pull
hg update mytag

hg pull --help reveals the following, but unfortunately none of them are working for a tag:

options:

 -u --update                update to new branch head if changesets were pulled
 -f --force                 run even when remote repository is unrelated
 -r --rev REV [+]           a remote changeset intended to be added
 -B --bookmark BOOKMARK [+] bookmark to pull
 -b --branch BRANCH [+]     a specific branch you would like to pull
 -e --ssh CMD               specify ssh command to use
  --remotecmd CMD           specify hg command to run on the remote side
  --insecure                do not verify server certificate (ignoring web.cacerts config)

What I tried:

hg pull -r mytag            only pulls the latest changesets, but no update
hg pull -u                  pulls and updates to tip, but no tag allowed
hg pull -b mytag            abort: unknown branch
hg pull -B mytag            abort: remote bookmark mytag not found

Is it possible to do it in one line?

Answer 1

With vanilla Mercurial, there is no command to pull & update to a certain tag, revision or whatever.

hg pull
hg update mytag

or

hg pull
hg update -r REVNUMBER 

Will do the job just fine, I wouldn't complicate it with aliases and functions that saves me from doing only one extra command.

Answer 2

If you are working with command line, this will help you.

Making a function first.

function pullandup(){ hg pull; hg up $1; }

$1 will be replaced by the first command line argument. So this function performs hg pull first than takes a command line argument and updates the working directory to specified revision/bookmark/tag.

You can create an alias of this and call the function.

alias pull_up='function pullandup(){ hg pull; hg up $1; };pullandup'

Running

pull_up mytag

will first pull all the latest changesets and will update your working directory to mytag .

There may be differences while working with other terminals, this one is for BASH.