How do I specify a different editor for Mercurial on Windows?

Whenever HG needs to prompt for a commit message, or whatever, it opens up Notepad. This is annoying. I have Vim7.3 installed, and I've tried setting the EDITOR environment variab开发者_开发问答le to point to gvim, to no avail.

I'm using PowerShell, but I've tried testing in both PowerShell and cmd. They both keep insisting on Notepad.

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[ui]
editor = C:\Path\To\gvim.exe

In your .hgrc file.

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Mercurial tries to pick which program to call to edit a commit message by trying the following (in order):

1. HGEDITOR environment variable
2. editor configuration option in [ui] section (in hgrc or passed with --config ui.editor command-line option).
3. VISUAL environment variable
4. EDITOR environment variable
5. vi, if none of the above is set

(source)