Re: Why does show_help_echo call substitute_command_keys?

[Yuri Khan]

On Fri, Jul 21, 2017 at 4:01 PM, Clément Pit-Claudel
<address@hidden> wrote:
> On 2017-07-21 10:48, Yuri Khan 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?
>
> Ok. So we don't expect callers to explicitly use substitute-command-keys on 
> their help-echo properties?

Imagine if it were so.

You add a button to the tool bar, with a help-echo property containing
tooltip text with command keys substituted at the time of addition.

The user rebinds the command to another key. Your button retains its
(now inaccurate) tooltip text.