eww: Proper comment indentation in forum websites

[James Thomas]

Someone was asking for this a while ago (can't find the post now - may
have been on reddit).

I whipped up the following for use with the reddit proxy teddit.net;
sharing in case anyone finds it useful:

(defun my/eww-tag-div (dom)
  (let ((display (cdr (assq 'display shr-stylesheet))))
    (if (or (equal display "inline")
            (equal display "inline-block"))
        (shr-generic dom)
      (shr-ensure-newline)
      ;; Modifications of the default function
      (let ((shr-indentation
             (if (string-prefix-p "comment " (dom-attr dom 'class))
                 (+ shr-indentation
                    (* 4 shr-table-separator-pixel-width))
               shr-indentation)))
        (shr-generic dom))
      (shr-ensure-newline))))

(setq shr-external-rendering-functions '((div . my/eww-tag-div)))

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