Following links doesn't search the repository in gfm-mode

[alelog]

I'm just starting to use Markdown mode for editing a GitHub project's Wiki in a local clone and it's a great improvement over my previous process--thank you!

To keep files organized, I maintain significant hierarchy in my Wiki directories. GitHub's Gollum Wiki, searches for files that match the link anywhere in the Wiki git repository. In gfm-mode, trying to follow Gollum links opens a new buffer in the directory of the buffer containing the link. I tried setting markdown-wiki-link-search-parent-directories to non-nil but it doesn't appear to search the whole repository.

Thank you for considering this (or telling me what I'm doing wrong if this functionality is already supported).

Below is a snippet of Gollum Wiki documentation at
https://github.com/gollum/gollum/wiki#linking-internal-pages

Linking internal pages

The following tag will create a link to another Gollum page:

[[cannonical-page-filename]]

Cannonical page filename is the page's filename, but after applying these rules:

• Extension is tossed away.
• Spaces (U+0020) are replaced with dashes (U+002D).
• Forward slashes (U+002F) are replaced with dashes (U+002D).

Examples:

• [[J. R. R. Tolkien]] will reference the J.-R.-R.-Tolkien.ext page
• [[Movies / The Hobbit]] will reference the Movies---The-Hobbit.ext page
• [[モルドール]] will reference the モルドール.ext page

The referenced page may exist anywhere in the git repository. Gollum will search for it and link the first such page that it finds.

[syohex]

Did you set non-nil value to markdown-enable-wiki-links ?

[alelog]

Thank you for the suggestion. I don't see that as a customization variable in emacs. I tried just setting it to t, just in case, and that didn't help. Do I need to switch to a development version to get that setting?

[syohex]

No.

    [[J. R. R. Tolkien]] will reference the J.-R.-R.-Tolkien.ext page
    [[Movies / The Hobbit]] will reference the Movies---The-Hobbit.ext page
    [[モルドール]] will reference the モルドール.ext page

I think 1st and 3rd example works. While 2nd does not works when markdown-enable-wiki-links is non-nil.

[alelog]

Sorry, I wasn't clear. I'm happy enough with how the character normalization works now (after discovering that I should use gfm-mode or customize markdown-link-space-sub-char). The example [[Movies / The Hobbit]] doesn't involve any directories--it's just showing that spaces, slashes, etc. are all normalized to a single '-'.

My big issue is not finding pages in different directories of the Wiki. If I have Home.md with content [[Link]] but Link.md is in a subdirectory, gfm-mode and markdown-mode open a new buffer in the same directory as Home.md instead of finding Link.md in the subdirectory.

Here's the relevant snippet from Gollum's documentation:

The referenced page may exist anywhere in the git repository. Gollum will search for it and link the first such page that it finds.

[jrblevin]

I added a markdown-wiki-link-search-subdirectories option, which is disabled by default in markdown-mode but enabled by default in gfm-mode. I also added some test cases, but let me know if for some reason it doesn't work as expected.