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Re: Why does show_help_echo call substitute_command_keys?

From: Yuri Khan
Subject: Re: Why does show_help_echo call substitute_command_keys?
Date: Sat, 22 Jul 2017 00:49:00 +0700

On Fri, Jul 21, 2017 at 9:54 PM, Drew Adams <address@hidden> wrote:
>> Because the help-echo property is the Emacs API to tooltips, and
>> tooltips are expected to be able to display keyboard equivalents
>   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>> to clicking the thing that is pointed?
> A tooltip should just display whatever text it is handed,
> with no fiddling with or elaboration of that text.  If you
> need such fiddling, whether by ``substitute-command-keys'
> or `format' or something else, do it beforehand.

Actually, client code that wishes to display a command key in a
tooltip can set the help-echo property to a function. So, hardcoding
the substitute-command-keys call in show_help_echo does not seem
necessary after all.

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