How to use HTMLIZE in a function and change the local buffer to HTMLIZE output buffer?

this one helps. Does using the first one with -nw work? that should prevent an X window being opened, but there should still be enough of the 'GUI' part of emacs present to be able to initialise the faces system. It's still not as elegant as -batch (it'll fail if run from a non-terminal process, eg crontab) but it'll be less irritating.

help you fix your problem for @Andreas 's hints, I add following code to htmlize.el. Currently the org-link can be htmlized to clickable link.
The code was shared on github:

(defun expand-org-link (&optional buffer)
  "Change [[url][shortname]] to [[url] [shortname]] by adding a space between url and shortname"
  (goto-char (point-min))
  (while (re-search-forward "\\[\\[\\([^][]+\\)\\]\\(\\[\\([^][]+\\)\\]\\)?\\]"
                nil t)
    (let ((url (match-string 1))
      (link-text (match-string 3)))
      (delete-region (match-beginning 0) (match-end 0))
      (insert "[[" url "] [" link-text "]]"))))

(defun shrink-org-link (&optional buffer)
  "Change [[url] [shortname]] to [[url][shortname]], remove the space between url and shortname"
  (goto-char (point-min))
  (while (re-search-forward "\\[\\[\\([^][]+\\)\\] \\(\\[\\([^][]+\\)\\]\\)?\\]"
                nil t)
    (let ((url (match-string 1))
      (link-text (match-string 3)))
      (delete-region (match-beginning 0) (match-end 0))
      (insert "[[" url "][" link-text "]]"))))

(defun transform-org-link ()
  "transform htmlized <span> to <a>"
  (goto-char (point-min))
  (while (re-search-forward "\\[\\[<span \\([^>]+\\)>\\([^][]+\\)</span>\\] \\[\\([^][]+\\)\\]\\]"
                nil t)
    (let ((style (match-string 1))
          (url (match-string 2))
      (link-text (match-string 3)))
      (delete-region (match-beginning 0) (match-end 0))
      (insert "<a " style " href=\"" url "\">" link-text "</a>"))))

To fix this issue I'm trying to rewrite some document from latex in org-mode. , You can patch the file _mapping.py in ../pygments/lexers/, line 193:

'NasmLexer': ('pygments.lexers.asm', 'NASM', ('nasm','asm'), ('*.asm', '*.ASM'), ('text/x-nasm',)),

should help you out omg, at last using the command M-x htmlize-buffer, i found it may be due to the variable py-number-face and py-variable-name-face. then I just set them to nil at .emacs file.