make link paths relative to current file

[rfhlmn]

When editing file a/b/c.md and trying to link to a/f/d.md, the current behaviour is to link from the root of the wiki, which doesn't work. I.e. the link would be 'a/f/d.md', when we need '../f/d.md'.

So here we make the link relative to the file we're editing.

---

I didn't find a place to write some unit tests, but it worked for the obvious three cases:

• link in the current directory
• link to a subdirectory of current
• link to a parent or sibling directory

Do let me know if I should polish something up.

Happy holidays

[rfhlmn]

This should solve https://github.com/michal-h21/vim-zettel/pull/142

[michal-h21]

Thanks, for this, this looks great! I will be mostly offline for the next 7 days, so I will test it and hopefully merge sometime in the next week, probably.

[rfhlmn]

I just realized this will probably break on Windows, as the path separator is "wrong" for Windows. I'll look into what I have to do to make that work as well. I can't test it, though, as I don't have a Windows machine.

[michal-h21]

Sorry for the late reply, I've got some cold on my vacations.

I think forward slashes are not a problem on Windows, they should work in recent Windows versions. It would be also a problem if user shared the wiki over multiple machines with different operating systems.

[rfhlmn]

No worries, I hope you're all better now. :)

Oh, I didn't know that. Fair enough, that makes the code a bit easier as well.

Thank you!

[michal-h21]

Yeah, I am OK now, thanks. I've set the s:path_sep variable to forward slash, but kept your original code in comments, so if we find in the future that backslashes are needed, we can use it.

[rfhlmn]

Glad to hear it!

Alright, cool, makes a lot of sense to me. :grin: