bug#56977: 29.0.50; gnus-parameter-to-list is ignored for digest groups

bug#56977: 29.0.50; gnus-parameter-to-list is ignored for digest groups

[Sam Steingold]

I set

--8<---------------cut here---------------start------------->8---
gnus-parameter-to-list-alist
==> (("gmane.comp.security.risks" "risks@CSL.sri.com"))
--8<---------------cut here---------------end--------------->8---

and

--8<---------------cut here---------------start------------->8---
gnus-newsgroup-name
==> "nndoc:gmane.comp.security.risks-1049"
--8<---------------cut here---------------end--------------->8---

(because it is a digest group) but still

--8<---------------cut here---------------start------------->8---
(gnus-parameter-to-list gnus-newsgroup-name)
==> "risks@CSL.sri.com"
--8<---------------cut here---------------end--------------->8---

However, when I do `f' (`gnus-summary-followup') in the

--8<---------------cut here---------------start------------->8---
gnus-summary-buffer
==> #<buffer *Summary nndoc:gmane.comp.security.risks-1049*>
--8<---------------cut here---------------end--------------->8---

the header of the `gnus-message-buffer' (`*unsent ...') contains

--8<---------------cut here---------------start------------->8---
Newsgroups: gmane.comp.security.risks
--8<---------------cut here---------------end--------------->8---

instead of

--8<---------------cut here---------------start------------->8---
CC: risks@CSL.sri.com
--8<---------------cut here---------------end--------------->8---

Thank you!


In GNU Emacs 29.0.50 (build 1, x86_64-apple-darwin21.5.0, NS appkit-2113.50 Version 12.4 (Build 21F79))
 of 2022-08-01 built on 3c22fb11fdab.ant.amazon.com
Repository revision: 3bd9b6132f1122ea938ef65e62b2cd919e2dfe8a
Repository branch: master
Windowing system distributor 'Apple', version 10.3.2113
System Description:  macOS 12.4

Configured using:
 'configure --with-imagemagick --with-mailutils --with-ns
 PKG_CONFIG_PATH='

Configured features:
ACL GIF GMP GNUTLS IMAGEMAGICK JPEG JSON LCMS2 LIBXML2 MODULES NOTIFY
KQUEUE NS PDUMPER PNG SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS WEBP ZLIB

Important settings:
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Major mode: ELisp/l

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Load-path shadows:
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Memory information:
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 (symbols 48 50130 25)
 (strings 32 305493 23417)
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 (vectors 16 127442)
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-- 
Sam Steingold (http://sds.podval.org/) on darwin Ns 10.3.2113
http://childpsy.net http://calmchildstories.com http://steingoldpsychology.com
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