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Is it possible to setup Vim so that it will only show:
WARNING: The file has been changed since reading it!!!
If the file is actually different, not just when the timestamp changes?
For example, I'll quite frequently background Vim (^Z), roll back to an older version of a file (eg, to run the test suite against it), revert back to the current version and fg Vim again… But I still get the “file has changed” warning because, even though the content is identical, the timestamp has changed.
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You changed branches or performed some other Git operation that updated the file you have open, and that means a different modification time. Vim compares it to that of when it was last read and gives you this message if they differ: WARNING: The file has been changed since reading it!!! Do you really want to write to it (y/n)?
Vim will run any associated |FileChangedShell| autocommands or display a warning for any files that have changed. In the GUI this happens when Vim regains input focus.
Vim will run any associated |FileChangedShell| autocommands or display a warning for any files that have changed. In the GUI this happens when Vim regains input focus. So the FocusGained event should not be needed at all.
If you have made modifications to the file, you can use :edit! to force the reload of the current file (you will lose your modifications). The command :edit can be abbreviated by :e. The force-edit can thus be done by :e! to make Vim automatically refresh any files that haven't been edited by Vim.
If you try on vim 7.3
:help timestamp
It is said thatWhen Vim notices the timestamp of a file has changed, and the file is being
edited in a buffer but has not changed, Vim checks if the contents of the file
is equal. This is done by reading the file again (into a hidden buffer, which
is immediately deleted again) and comparing the text. If the text is equal,
you will get no warning.
So I guess that in your case, something has changed other than the file timestamp ( or there is a bug in Vim).
In my case, I often get that message when I check out files : they change from "read only" to "read write" even if their content has not changed.
So I guess that if the properties of a file are affected, it is considered "changed" even if the content is the same.
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