queue.3: Comment out text for functions not in glibc (related: 6559169cac)

  ===========
DESCRIPTION
===========

I'm documenting ``CIRCLEQ_*`` macros in queue.3.  While writing this, I
noticed that the documentation for some types of queues/lists talked
about swapping contents of two lists, but only for some of them.  I then
found that those macros (``*_SWAP``) don't exist in my system (Debian),
but exist in BSD, and I also found that a previous commit (6559169cac)
commented out a lot of the *_SWAP macros documentation, but not all, and
the reason was that they were not present on glibc.

I checked that I didn't have any of the *_SWAP macros on my glibc, so I
think this is probably that the commit simply forgot to comment some of
them.

=======
TESTING
=======

I tun ``sudo make`` and then visualized the man page with
``man 3 queue``, and the changes looked good.

I also noticed that the subsection ``Tail queue example`` contents were
wrong, as they contained calls to CIRCLEQ_* macros.  I will address that
in a future patch, before I submit the patch documenting CIRCLEQ_*.
  

Hello Alejandro,

On 8/4/20 11:40 AM, Alejandro Colomar wrote:
> ===========
> DESCRIPTION
> ===========
> 
> I'm documenting ``CIRCLEQ_*`` macros in queue.3.  While writing this, I
> noticed that the documentation for some types of queues/lists talked
> about swapping contents of two lists, but only for some of them.  I then
> found that those macros (``*_SWAP``) don't exist in my system (Debian),
> but exist in BSD, and I also found that a previous commit (6559169cac)
> commented out a lot of the *_SWAP macros documentation, but not all, and
> the reason was that they were not present on glibc.
> 
> I checked that I didn't have any of the *_SWAP macros on my glibc, so I
> think this is probably that the commit simply forgot to comment some of
> them.
> 
> =======
> TESTING
> =======
> 
> I tun ``sudo make`` and then visualized the man page with
> ``man 3 queue``, and the changes looked good.
> 
> I also noticed that the subsection ``Tail queue example`` contents were
> wrong, as they contained calls to CIRCLEQ_* macros.  I will address that
> in a future patch, before I submit the patch documenting CIRCLEQ_*.
> 
> ________________________________________________________________________
> P.S.:  I'd like to know, as my previous patch was oddly reformatted by
> my mailer, if you can see it correctly this time.  I changed some,
> configuration, so I hope it is fine.

All pretty good this time. I applied your patch. Two things to note:
* There was some superfluous whitespace at the end of some of the 
  changed lines. By chance, that got automatically fixed up.
  No big problem, but it generates a bit of unnecessary noise when 
  applying the patch [1]

* I added the following on your hehalf:

    Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>

Thanks,

Michael

> =====
> PATCH
> =====
> 
>  From 2282ba2397e6ac7dca4cc09dfcb92ac524718f27 Mon Sep 17 00:00:00 2001
> From: Alejandro Colomar <colomar.6.4.3@gmail.com>
> Date: Sun, 26 Jul 2020 23:36:42 +0200
> Subject: [PATCH] queue.3: Comment out text for functions not in glibc
>   (related: 6559169cac)
> 
> ---
>   man3/queue.3 | 26 +++++++++++++-------------
>   1 file changed, 13 insertions(+), 13 deletions(-)
> 
> diff --git a/man3/queue.3 b/man3/queue.3
> index 00e4b1958..ff1f42f3a 100644
> --- a/man3/queue.3
> +++ b/man3/queue.3
> @@ -110,8 +110,8 @@
>   .Nm TAILQ_LAST ,
>   .Nm TAILQ_NEXT ,
>   .Nm TAILQ_PREV ,
> -.Nm TAILQ_REMOVE ,
> -.Nm TAILQ_SWAP
> +.Nm TAILQ_REMOVE
> +.\" .Nm TAILQ_SWAP
>   .Nd implementations of singly-linked lists, singly-linked tail queues,
>   lists and tail queues
>   .Sh SYNOPSIS
> @@ -172,7 +172,7 @@ lists and tail queues
>   .Fn LIST_NEXT "TYPE *elm" "LIST_ENTRY NAME"
>   .\" .Fn LIST_PREV "TYPE *elm" "LIST_HEAD *head" "TYPE" "LIST_ENTRY NAME"
>   .Fn LIST_REMOVE "TYPE *elm" "LIST_ENTRY NAME"
> -.Fn LIST_SWAP "LIST_HEAD *head1" "LIST_HEAD *head2" "TYPE" "LIST_ENTRY 
> NAME"
> +.\" .Fn LIST_SWAP "LIST_HEAD *head1" "LIST_HEAD *head2" "TYPE" 
> "LIST_ENTRY NAME"
>   .\"
>   .Fn TAILQ_CONCAT "TAILQ_HEAD *head1" "TAILQ_HEAD *head2" "TAILQ_ENTRY 
> NAME"
>   .Fn TAILQ_EMPTY "TAILQ_HEAD *head"
> @@ -197,7 +197,7 @@ lists and tail queues
>   .Fn TAILQ_NEXT "TYPE *elm" "TAILQ_ENTRY NAME"
>   .Fn TAILQ_PREV "TYPE *elm" "HEADNAME" "TAILQ_ENTRY NAME"
>   .Fn TAILQ_REMOVE "TAILQ_HEAD *head" "TYPE *elm" "TAILQ_ENTRY NAME"
> -.Fn TAILQ_SWAP "TAILQ_HEAD *head1" "TAILQ_HEAD *head2" "TYPE" 
> "TAILQ_ENTRY NAME"
> +.\" .Fn TAILQ_SWAP "TAILQ_HEAD *head1" "TAILQ_HEAD *head2" "TYPE" 
> "TAILQ_ENTRY NAME"
>   .\"
>   .Sh DESCRIPTION
>   These macros define and operate on four types of data structures:
> @@ -213,8 +213,8 @@ Insertion of a new entry after any element in the list.
>   O(1) removal of an entry from the head of the list.
>   .It
>   Forward traversal through the list.
> -.It
> -Swapping the contents of two lists.
> +.\" .It
> +.\" Swapping the contents of two lists.
>   .El
>   .Pp
>   Singly-linked lists are the simplest of the four data structures
> @@ -1157,13 +1157,13 @@ The macro
>   removes the element
>   .Fa elm
>   from the tail queue.
> -.Pp
> -The macro
> -.Nm TAILQ_SWAP
> -swaps the contents of
> -.Fa head1
> -and
> -.Fa head2 .
> +.\" .Pp
> +.\" The macro
> +.\" .Nm TAILQ_SWAP
> +.\" swaps the contents of
> +.\" .Fa head1
> +.\" and
> +.\" .Fa head2 .
>   .Ss Tail queue example
>   .Bd -literal
>   TAILQ_HEAD(tailhead, entry) head =
>