unofficial mirror of 
 help / color / mirror / Atom feed
From: Sebastian Miele <>
Subject: bug#41981: Reference Manual on Vtables: Missing Information on Permission "h"
Date: Sun, 21 Jun 2020 15:51:42 +0200
Message-ID: <> (raw)

I am on the current master branch. The standard-vtable-fields is
"pwuhuhpwphuhuhuh" on my system and something similar in the Reference
Manual. In particular, it contains the permission letter "h", but I find
no explanation in the manual what that means.

Section (Vtables) just mentions: "It used to be that the second
letter for each field was a permission code, such as ‘w’ for writable or
‘r’ for read-only." And that read-only has become depriciated.

At the end of section (Meta-Vtables) is an example:

  (define* (make-vtable fields #:optional printer)
    (make-struct/no-tail <standard-vtable>
      (make-struct-layout fields)

Without information on "h", I was not able to make sense of the fact,
that fields with permission "h" somehow seem to be skipped by
make-struct/no-tail when processing the two init values. In particular,
for some reason, the value of printer is put into field 3 of the new
structure and not in field 1, almost certainly somehow because fields 1
and 2 have "h".

"h" should be documented.

             reply	other threads:[~2020-06-21 13:51 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-21 13:51 Sebastian Miele [this message]
2020-06-21 16:29 ` dsmich
2020-06-22 13:42   ` Sebastian Miele

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

  List information:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \
    --subject='Re: bug#41981: Reference Manual on Vtables: Missing Information on Permission "h"' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

unofficial mirror of 

This inbox may be cloned and mirrored by anyone:

	git clone --mirror guile-bugs/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 guile-bugs guile-bugs/ \
	public-inbox-index guile-bugs

Example config snippet for mirrors.
Newsgroups are available over NNTP:

AGPL code for this site: git clone http://ou63pmih66umazou.onion/public-inbox.git