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From: Heime <heimeborgia@protonmail.com>
To: Heime via Users list for the GNU Emacs text editor
	<help-gnu-emacs@gnu.org>
Subject: Handling optional argument with t value
Date: Sun, 04 Dec 2022 23:01:21 +0000	[thread overview]
Message-ID: <ZLirSnqURtzcLUuxl7E7uPdgU5w9vHpDiJdNzqp9CtOwzFdWUyfLqQsybeWNBWQzVAnBD4trjznM3emUmGU_X_nZ37lPWuLPTh_S9GnT0SI=@protonmail.com> (raw)

I have this function to which I am adding the capability to print a compact version 
that excludes the whitespace.  Thus I include an optional argument "kpact", so that
when it is set to t, the (insert " ") in excluded.  Is this a good strategy.  

Does the use of (unless kpact  (insert " ")) do the job or am I missing some possible
condition that might occur?

(defun ticker-hour (lampkl &optional kpact)
  "TODO."

  (interactive)

  (unless kpact  (insert " "))

  (cond
   ((eq 'magenta lampkl)
       (insert (propertize "⚒"
                 'font-lock-face '(:background "#FF29FF"
                                   :foreground "black"))))
   ((eq 'red lampkl)
       (insert (propertize "⚒"
                 'font-lock-face '(:background "#B30000"
                                   :foreground "black"))))))









             reply	other threads:[~2022-12-04 23:01 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-04 23:01 Heime [this message]
2022-12-05 19:16 ` Handling optional argument with t value Jean Louis
2022-12-05 20:09   ` Heime
2022-12-05 23:03     ` Emanuel Berg

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