Re: feature/fix-the-long-lines-display-bug e7b5912b23: Improvements to long lines handling.

[Robert Pluim]

>>>>> On Sun, 24 Jul 2022 14:45:09 +0300, Eli Zaretskii <eliz@gnu.org> said:

    >> From: Robert Pluim <rpluim@gmail.com>
    >> Cc: Eli Zaretskii <eliz@gnu.org>,  emacs-devel@gnu.org,  
gregory@heytings.org
    >> Gmane-Reply-To-List: yes
    >> Date: Sun, 24 Jul 2022 13:14:21 +0200
    >> 
    >> Apropos, is there an ʼupdating pdumper stuff for dummiesʼ guide
    >> somewhere? Something along the lines of:
    >> - if you add an int to struct <foo>, do <bar>
    >> - if you add a Lisp_Object to struct <baz>, do <frot>
    >> 
    >> I ask, because Iʼm playing with struct buffer_text, and Iʼm very
    >> successfully causing 'failure to dump' :-)

    Eli> The error message points you to the comment in config.h that is
    Eli> supposed to be the "updating pdumper stuff for dummies" guide:

    Eli>   error: #error "buffer changed. See CHECK_STRUCTS comment in 
config.h."

Sorry, I wasnʼt clear. That just fixes the compile error, it doesnʼt
cover the second part, which is to ensure that your new field is
dumped/restored correctly. For a struct Lisp_Hash_Table *,
DUMP_FIELD_COPY is not enough.

Robert
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