Re: change "word" definition (syntax table) for double-click?

[ead-gnu-emacs]

Xah,

] How can I have a double-click on for instance the middle "o" in
] "http://www.foo.com/"; highlight the entirety of "http://
www.foo.com/"
] rather than merely the word "foo"?

Thanks for your reply. I appreciate it. Unfortunately, I see that I
sent
you (and everyone else) down the wrong path with my poor wording. Let
me
try again.

The double-clicking-on-a-URL was just one sample application. What I
want is for double-clicking with the mouse to highlight, as a word,
all
contiguous non-whitespace characters.

Some sample applications I want this for are:

o   Double-clicking in the middle of URLs.
o   Double-clicking in the middle of RFC822-compliant email addresses.
o   Double-clicking in the middle of passwords and other strings
having
    non-alphanumeric characters.

In short, I want the same double-clicking control inside emacs that
character classes give me inside xterm and cutchars give me inside
rxvt.

    xterm(1)
    CHARACTER CLASSES
    Clicking  the  left  pointer  button  twice   in   rapid
    succession  (double-clicking)  causes  all characters of
    the same class (e.g., letters, white space, punctuation)
    to  be  selected  as  a ``word''. Since different people
    have different preferences for what should  be  selected
    (for example, should filenames be selected as a whole or
    only the separate subnames),  the default mapping can be
    overridden  through  the  use  of  the  charClass (class
    CharClass) resource.

    rxvt(1)
    cutchars: string
    The characters used as delimiters for double-click  word
    selection  (whitespace delimiting is added automatically
    if resource is given).

Thank you for any pointers,
Eric
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