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Re: record_unwind_save_match_data in autocmp_chars

From: Kenichi Handa
Subject: Re: record_unwind_save_match_data in autocmp_chars
Date: Mon, 05 Oct 2009 09:42:19 +0900

In article <address@hidden>, Eli Zaretskii <address@hidden> writes:

> composite.c:autocmp_chars calls record_unwind_save_match_data before
> it starts looping on an element of composition-function-table.
> However, since the loop calls fast_looking_at, which is documented not
> to change match data, is the call to record_unwind_save_match_data
> really necessary?  If it is still necessary, what other functions
> called by autocmp_chars might clobber match data?

autocmp_chars calls the Lisp function auto-compose-chars via
safe_call, and auto-compose-chars calls Lisp functions
registered in composition-function-table.

Kenichi Handa

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