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From: "Clément Pit-Claudel" <cpitclaudel@gmail.com>
To: Emacs developers <emacs-devel@gnu.org>
Subject: Converting compositions to strings
Date: Mon, 30 Jan 2017 00:13:34 -0500	[thread overview]
Message-ID: <fe43fcaf-6fca-4ee7-4fbc-d4dd983e9e33@gmail.com> (raw)

Hi emacs-devel,

Many compositions can be represented as strings: for example, prettify-symbols-mode composes "lambda" into "λ", and nameless prettifies the name of the current package as ":" or "::".

How can I reconstruct these strings from the value of the 'composition' text property?  Small experiments suggest that for single-character compositions the property has the shape (_ _ [?λ]) and for multi-character compositions (_ _ [?x _ ?y _ …]), but I also found instances of the shape ((_ ?x _ _)), and ((_ . ?x)) (I think).

Is there a recipe that I can use to construct a string representation of a composition? (I realize that many compositions can't adequately be represented as plain strings; I'm only interested in those that can).

Thanks!
Clément.



             reply	other threads:[~2017-01-30  5:13 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-30  5:13 Clément Pit-Claudel [this message]
2017-01-30 13:34 ` Converting compositions to strings Stefan Monnier
2017-01-30 16:23   ` Clément Pit-Claudel
2017-01-30 14:24 ` Ted Zlatanov
2017-01-30 16:27   ` Clément Pit-Claudel
2017-01-30 17:48     ` Ted Zlatanov
2017-01-30 15:18 ` Eli Zaretskii
2017-01-30 16:39   ` Clément Pit-Claudel
2017-01-30 16:52     ` Eli Zaretskii
2017-01-31 14:31       ` Stefan Monnier

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