bug#57278: 26.3; Doc of `delete-indentation'

[Robert Pluim]

>>>>> On Thu, 18 Aug 2022 14:29:08 +0000, Drew Adams <drew.adams@oracle.com> 
>>>>> said:

    Drew> The doc string and the description in (elisp) `User-Level Deletion' 
are
    Drew> insufficiently oriented to end usage.  They should say clearly that a
    Drew> prefix argument joins this line to the next one.

    Drew> The doc string talks about "argument".  It should say "a prefix
    Drew> argument".  The manual says nothing about the prefix argument.  It 
talks
    Drew> only about argument JOIN-FOLLOWING-P.

    Drew> Please write the descriptions first of all with interactive use in 
mind,
    Drew> speaking of the prefix arg.  Then say that when called from Lisp the
    Drew> argument corresponds to the prefix argument when used interactively.

These kinds of bug reports from you would be much more useful if they
were based off the latest code in master

Robert
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