Re: Sync only files with a particular file extension

Thanks for your detailed suggestions.  Unfortunately I often use '.' in my 
folder names, so getting something to work along these lines will be 
challenging.  I think Greg's suggestion is the way for me to go.

On Friday, July 7, 2023 at 3:33:28 AM UTC-4 Tõivo Leedjärv wrote:

> On Thu, 6 Jul 2023 at 19:44, 'Gilchrist, Michael Aaron' via
> unison-users <[email protected]> wrote:
> >
> > I'm trying to set up a profile to keep all of the files within a 
> directory tree ending in .Rda in sync between computers, but can't find a 
> good way to do this using unison (which I have used for decades for keeping 
> my home directory in sync).
>
> Unfortunately, there is no such feature yet.
>
> > I've found two threads related to this need to sync based on file 
> extensions on non-unison help forums ((
> https://urldefense.com/v3/__https://superuser.com/q/1233998/651940__;!!IBzWLUs!S641-o5R6NXzhEbdyu3Af3HK4mDbCVa27-5L4-AzSNDovU_CPoAK1-hpoqlT-691RleYrOBB22GCQ56MWI0d0w$ 
> ) and (
> https://urldefense.com/v3/__https://superuser.com/q/383376/651940__;!!IBzWLUs!S641-o5R6NXzhEbdyu3Af3HK4mDbCVa27-5L4-AzSNDovU_CPoAK1-hpoqlT-691RleYrOBB22GCQ5493aqmOA$ 
> )), but neither provides a working solution.
>
> These answers are pointing in the right direction. There is no other
> way currently than to use the "ignore" and "ignorenot" preferences
> with suitable patterns. The key is to know that these preferences work
> on paths and names, they don't distinguish between directories and
> files.
>
> The idea is to ignore everything, except names ending in. Rda. You
> need to craft a suitable regular expression for the ignore preference.
> For example:
> ignore = Regex .*[.]([^R][^d][^a]|.{0,2}|.{4,})
>
> (you can also specify these preferences on the command line but then
> you need to quote/escape appropriately for your shell)
>
> This will ignore everything that has at least one period in the name
> (could be the first character), except those that have .Rda at the
> end. It will not ignore names that have no period in them. This is
> intentional. The idea is that we don't want to ignore subdirectories
> and expect those names not to contain periods (see below).
>
> The single ignore rule can be split up to several, if you find that 
> simpler:
> ignore = Regex .*[.].*
> ignorenot = Regex .+[.]Rda
>
> (note that this one is slightly different, also ignoring files/dirs
> named just ".Rda"; the second pattern can be changed to .*[.]Rda to
> get the same results as above)
> (I haven't tested, but ignore = Name *.* and ignorenot = Name ?*.Rda
> should also work because these are equivalent to the Regex above (the
> ? is there to require at least one character before the last period,
> you can drop it if you want))
>
> The side effects of requiring a period in the name are:
> * all names without any period are still included - this is
> intentional and is expected to include (mostly) subdirs
> * all subdirectories with a period in name are ignored
>
> To get around these limitations, you can add additional rules, such as 
> these:
> ignore = Name falsely_included_file1
> ignore = Name falsely_included_file2
> ignorenot = BelowPath falsely_ignored.dir
>
> This is very clunky but it should work.
>

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