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Subject: |
An Introduction to Programming in Emacs Lisp (eintr) - Texinfo documentation error |
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Date: |
Mon, 14 Oct 2019 12:11:29 +0000 (UTC) |
Package: emacs
I am reading the Introduction to Programming in Emacs Lisp (eintr) documentation in Emacs 26.3 in Info mode
I have encountered 2 possible errors so far:-
Error 1) I am confused as to whether there are 3 or 4 "special forms" in chapter 3.
Is 'defun' treated as a macro or a special form or both of those?
3.7 The ‘if’ Special Form
=========================
A third special form, in addition to ‘defun’ and ‘let’, is the
conditional ‘if’.
<<< The number of special forms is later contradicted in 3.10 as follows >>>
3.10 ‘save-excursion’
=====================
The ‘save-excursion’ function is the third and final special form that
we will discuss in this chapter.
Error 2) Possible extra closing parenthesis prevents evaluation with C-x C-e
3.7.1 The ‘type-of-animal’ Function in Detail
---------------------------------------------
...
In the ‘type-of-animal’ function, the code for the ‘if’ looks like
this:
(if (equal characteristic "fierce")
(message "It is a tiger!")))
thank you, Mark Bennett-Leaver
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--- Begin Message ---
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Subject: |
Re: bug#37747: An Introduction to Programming in Emacs Lisp (eintr) - Texinfo documentation error |
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Date: |
Mon, 14 Oct 2019 20:25:19 +0300 |
> Date: Mon, 14 Oct 2019 12:11:29 +0000 (UTC)
> From: Lata BL via "Bug reports for GNU Emacs,
> the Swiss army knife of text editors" <address@hidden>
>
> I have encountered 2 possible errors so far:-
> Error 1) I am confused as to whether there are 3 or 4 "special forms" in
> chapter 3.
> Is 'defun' treated as a macro or a special form or both of those?
>
> 3.7 The ‘if’ Special Form
> =========================
> A third special form, in addition to ‘defun’ and ‘let’, is the
> conditional ‘if’.
>
> <<< The number of special forms is later contradicted in 3.10 as follows >>>
>
> 3.10 ‘save-excursion’
> =====================
> The ‘save-excursion’ function is the third and final special form that
> we will discuss in this chapter.
Thanks, I fixed these places. 'defun' was originally a special form,
but now it's a macro, as described in "Complications" and in section
3.1.
> Error 2) Possible extra closing parenthesis prevents evaluation with C-x C-e
> 3.7.1 The ‘type-of-animal’ Function in Detail
> ---------------------------------------------
> ...
> In the ‘type-of-animal’ function, the code for the ‘if’ looks like
> this:
>
> (if (equal characteristic "fierce")
> (message "It is a tiger!")))
In the current version of the manual, this is a complete function, and
its parentheses are balanced.
With that, I'm closing this bug report.
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