Let's say you do hg status and you have three files modified. I know how to check in all three files (hg commit). But how can you check in (and then hg push) just one of the modified files?
Please check the output of hg help commit which reveals that you can do
hg commit foo.c
if you just want to commit a single file. This is just like Subversion and many other systems — no hocus-pocus :-)
Just do:
hg ci -I path/to/file -m "commited only one file"
That commits only one file, and you can push it, and none of the uncommitted changes will be affected.
dimo414
On the off chance you're running on Windows, TortoiseHG (a graphical Mercurial interface) lets you select which files to commit every time.
来源：https://stackoverflow.com/questions/2908102/check-in-single-file-with-mercurial