Radio links fail if adjacent

[Jay Dresser <jay@jaydresser.us>]

If you have a sequence of space separated words on a single line, i.e.
"link1 link2 link3 link4 ..." and those words match radio targets, every
other word/link will not be recognized as a radio link. In this example
link2 and link4 will not be links. describe-char correctly identifies
the good links:

  face        org-link
  help-echo   "Radio target link"

but does not identify the alternate links as such, which are displayed
in the default face and do not respond to click. Inserting another
character between them, i.e. "link1 - link2 - link3 ..." works correctly.


-- Jay Dresser