Mercurial总是说更改分支时文件已更新

Question

I am using Mercurial 3.1.2 on Linux. I have 2 brances: default and stable .

Always when I change branch I see notice saying that file was updated altough as far as I know the branches should be in the same state. (I just merged and committed them before running hg up .)

hg up default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved

I cannot see any difference by using hg diff .

hg diff -r default:stable
(empty result)

This is completely local project, I don't push or pull anywhere.

How can I find out what file is changing when I switch branch and what is the difference? Shouldn't merging branches have eliminated any difference between them?

Update: I took checksums of all files belonging to the project in both stable and default and there was no difference between branches.

Then I run command ls -l in both branches and took diff of results:

- -rw-r--r--  1 user group  16K Sep  2 12:04 Program.py
+ -rw-r--r--  1 user group  16K Sep  2 12:05 Program.py

One file of project has different modification time between branches.

Answer 1

I was able to get rid of this message by merging from stable to default. (Normally I merge from default to stable only.)

Diff of this merge is empty but now Mercurial only reports files changed if there are real changes.