bug#46327: 28.0.50; octave-mode: transpose-quotes taken as string-quotes

[Lars Ingebrigtsen]

Juang Dse <juangdse@gmail.com> writes:

> octave-mode takes the transpose sign (') for a string quote, and
> indents incorrectly.
>
> This can be seen by the two lines
> ---------------
> x = [2 2]'
> disp(x)
> ---------------
> and using indent-for-tab-command (TAB) for the 2nd line.

This is due to the following patch:

commit 9e68413c7f0a7f71e1cee923ace7282d14c2e686
Author:     Noam Postavsky <npostavs@users.sourceforge.net>
AuthorDate: Mon Aug 24 17:33:49 2020 +0200

    Fix inferior octave single-quote font lock
    
    * lisp/progmodes/octave.el (octave-mode-syntax-table): Fix
    fontification of single quotes in inferior octave mode (bug#25517).
    
    It looks like the problem is that octave-mode-syntax-table sets single
    quotes as punctuation even though GNU Octave's manual says single quotes
    are string syntax [1].
    
    [1]:
    https://www.gnu.org/software/octave/doc/interpreter/String-Objects.html

And, indeed, that link says:

"A character string in Octave consists of a sequence of characters
enclosed in either double-quote or single-quote marks."

But the ' character is also a transposition operator?  I don't know
Octave at all -- this seems like a rather ambiguous syntax?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no