More notes on Mercurial.

Recently, I made some changes to my work flow to get around some slight annoyances. Specifically, I switched from using mq to using pbranch. The features that pbranch gives me that mq didn’t basically boil down to two main things; sharing, and tracking.

With pbranch, it’s way easier for me to share my changes, both with other people, and with myself in a virtual machine. It is possible to share the patch with mq, by cloning the patch repo if I remembered to run qinit -C, but with pbranch all I have to do is clone the main repo, and my changes are right there, waiting for me.

For tracking, when I’m nearing the end of a patch, and it mostly works, I get really nervous if I can’t check in my changes. With mq, I set up an alias to let me commit the patch queue, so that I could go back, but it was really hard to tell what I had changed between any two commits, since it was showing me the diff of my diffs. And so I didn’t use it as much as I would like to. With pbranch, I just commit the code, like I want to, and it keeps track of what the patch should look like.

So, my day-to-day workflow now looks more like this:
If I’m working on a bug that I’ve already got a patch started for, I cd to the appropriate branch, type hg pgraph to see where I am, and hq update branchname to get to the pbranch I want to work on. Then I make my changes, and when I’m happy with the results of hg diff, I type hg commit to put the changes into the pbranch. After that, I use hg pdiff > ../branch-name-bugnum-description.diff to get a patch that I can upload to bugzilla. At this point, I usually load the patch into Vim, and search for some of the mistakes I’ve made in the past. (/^+.*[[:space:]]+$, and /dump caught a lot of my initial mistakes. Now I’ve moved on to things that are tougher to check for, like putting open-parens on a new line instead of on the previous line.) I usually go through a couple of cycles of hg commit/hg pdiff … before I’m happy with the patch. Once I am, I don’t have to type anything before I upload it, since it’s already committed.


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