bug#37395: [PATCH v3] diff-mode.el: take into account patch separators

[Lars Ingebrigtsen]

(Some minor comments.)

Konstantin Kharlamov <Hi-Angel@yandex.ru> writes:

> +(defsubst diff-prev-line-if-patch-separator ()
> +  "Return previous line if it has patch separator produced by
> +git-format-patch."

I don't think this needs to be a defsubst -- a defun is fine here.  And
the first doc string line should be a complete sentence.

> +(setq-local diff-buffer-type nil)

This should probably be a defvar and then a setq-local in `diff-mode'.

> +  (save-excursion
> +    (if (re-search-forward "^diff --git" nil t)
> +        (setq diff-buffer-type 'git)
> +      (setq diff-buffer-type nil))))

Hm...  are we really guaranteed that all git diffs have that string in
it somewhere?

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