bug#22692: 25.0.91; xref-find-definitions fails to prompt

[Dmitry Gutov <dgutov@yandex.ru>]

On 02/19/2016 05:59 PM, Eli Zaretskii wrote:

>>> Does "valid identifier" mean syntatically correct, or does it mean that
>>> the identifier is in the tags table.  Please clarify the documentation.
>>
>> We probably should just remove the word "valid" from there.
>
> That depends on how you will change the behavior ;-)

I've changed it like we discussed.

However, after reading the quoted text, I'm not quite sure we need to 
remove "valid". To my eyes, "valid identifier" in that text means 
"syntactically valid", rather than "an identifier defined somewhere in 
the current project". The latter would be "an existing identifier", I guess?

But that's my impression. If that word raises questions, maybe it doe 
need clarification, or a replacement. The only option that came to my 
mind, however, is more unwieldy: "discernible identifier", and it 
doesn't mean the same thing.

The two other uses of "valid identifier" we have inside Emacs (in 
cc-vars.el and idlwave.el) also mean "syntactically valid".

Mike, thoughts?