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3.17.7 Article button levels

The higher the value of the variables gnus-button-*-level, the more buttons will appear. If the level is zero, no corresponding buttons are displayed. With the default value (which is 5) you should already see quite a lot of buttons. With higher levels, you will see more buttons, but you may also get more false positives. To avoid them, you can set the variables gnus-button-*-level local to specific groups (see section 2.10 Group Parameters). Here's an example for the variable gnus-parameters:

 
;; increase gnus-button-*-level in some groups:
(setq gnus-parameters
      '(("\\<\\(emacs\\|gnus\\)\\>" (gnus-button-emacs-level 10))
        ("\\"               (gnus-button-man-level 10))
        ("\\"                (gnus-button-tex-level 10))))

gnus-button-browse-level
Controls the display of references to message IDs, mail addresses and news URLs. Related variables and functions include gnus-button-url-regexp, browse-url, and browse-url-browser-function.

gnus-button-emacs-level
Controls the display of Emacs or Gnus references. Related functions are gnus-button-handle-custom, gnus-button-handle-describe-function, gnus-button-handle-describe-variable, gnus-button-handle-symbol, gnus-button-handle-describe-key, gnus-button-handle-apropos, gnus-button-handle-apropos-command, gnus-button-handle-apropos-variable, gnus-button-handle-apropos-documentation, and gnus-button-handle-library.

gnus-button-man-level
Controls the display of references to (Unix) man pages. See gnus-button-man-handler.

gnus-button-message-level
Controls the display of message IDs, mail addresses and news URLs. Related variables and functions include gnus-button-mid-or-mail-regexp, gnus-button-prefer-mid-or-mail, gnus-button-mid-or-mail-heuristic, and gnus-button-mid-or-mail-heuristic-alist.

gnus-button-tex-level
Controls the display of references to TeX or LaTeX stuff, e.g. for CTAN URLs. See the variables gnus-ctan-url, gnus-button-ctan-handler, gnus-button-ctan-directory-regexp, and gnus-button-handle-ctan-bogus-regexp.


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