Issues on Windows due to case-sensitivity in various functions

[evanjs]

Problem

Initially, things seemed to work okay on Windows
I was able to install and configure into Doom Emacs
I could search my vault, use the results to directly open files, etc.

However, I tried to move a file to another location using obsidian-move-file
Emacs then told me that I was not viewing an Obsidian file

I tried vibe debugging it a bit using Anthropic's Claude, which came to this conclusion:

Windows is case-insensitive, but Emacs string comparison is case-sensitive by default.

It did provide me with a solution that appears to get a few more things working:

• Vault indexing appears to scan files now (0 files found before)
• File moving using the aforementioned obsidian-move-file appears to work as intended

---

Working Solution in my config

Here is what Claude came up with for my Doom config

  ;; Fix for Windows case sensitivity issue
  (defun obsidian-file-p (&optional file)
    "Return t if FILE is an obsidian.el file, nil otherwise. Fixed for Windows case sensitivity."
    (-when-let* ((raw-path (or file (buffer-file-name (buffer-base-buffer))))
                 (path (expand-file-name raw-path))
                 ;; Fix: Case-insensitive comparison on Windows
                 (vault-path (expand-file-name obsidian-directory))
                 (in-vault (if (eq system-type 'windows-nt)
                              (s-starts-with-p (downcase vault-path) (downcase path))
                            (s-starts-with-p vault-path path)))
                 (md-ext (s-ends-with-p ".md" path))
                 (not-dot-file (or obsidian-include-hidden-files
                                  (not (obsidian-dot-file-p path))))
                 (not-node-git-p (not (string-match-p (rx (or "node_modules" ".git")) path)))
                 (not-trash-p (obsidian-not-trash-p path))
                 (not-ignored-dir (obsidian-not-in-excluded-directory-p path))
                 (not-dot-obsidian (obsidian-not-dot-obsidian-p path)))
      t))

All that being said, I am a total elisp noob, but figured I should at least report the issue and my (or rather, Claude's) findings, what worked, etc.