Hack on WikiName handling and make TAB work for Wiki links.

Hack on WikiName handling and make TAB work for Wiki links.

* lisp/muse-colors.el (muse-colors-markup): Use
  `muse-explicit-link-regexp' instead of `muse-link-regexp'.

* lisp/muse-colors.el (muse-link-face): Add new argument EXPLICIT.  If
  nil, don't color bad links.  If non-nil, color bad links.

* lisp/muse-colors.el (muse-colors-link): Pass `t' to `muse-link-face'.

* lisp/muse-journal.el (muse-journal-rss-markup-regexps): Use
  `muse-explicit-link-regexp' instead of `muse-link-regexp'.
  (muse-journal-rss-munge-buffer): Ditto.

* lisp/muse-mode.el (muse-mode-fill-nobreak-p, muse-link-at-point):
  Docfix.

* lisp/muse-mode.el (muse-link-at-point): Rewrite so that explicit links
  are handled first, then implicit ones.  It should work better in all
  cases.  For now, we depend on the value of `muse-implicit-link-regexp'
  to determine how far to scan for an implicit link.  This defaults to
  the text between the point and the next space.

* lisp/muse-mode.el (muse-visit-link-default): Refactored code from
  `muse-visit-link'.  If the ANCHOR argument is a string, search for it
  literally after opening the buffer.  Hopefully this can be of use in
  custom visit-link functions, when necessary.

* lisp/muse-mode.el (muse-visit-link): Docfix.  Call
  `muse-visit-link-default'.

* lisp/muse-mode.el (muse-next-reference, muse-previous-reference):
  Search by text properties instead of regexps.  This allows Muse to find
  links without having to have a massive regexp that contains all link
  types.  The downside is that this will not work if the user defontifies
  the buffer.  But it would somewhat defeat the purpose of following
  links if you can't see them.

* lisp/muse-project.el (muse-project-batch-publish): Handle case when not
  enough command line args are passed in batch mode.

* lisp/muse-publish.el (muse-publish-markup-regexps): Use
  `muse-explicit-link-regexp'.

* lisp/muse-regexps.el (muse-explicit-link-regexp): Renamed from
  `muse-link-regexp'.

* lisp/muse-regexps.el (muse-implicit-link-regexp): New option that
  specifies the "common ground" of all implicit links, like URLs, bare
  WikiNames, and -- in the future -- email addresses.

* lisp/muse-wiki.el (muse-wiki-hide-nop-tag): Quote 'boolean.

* lisp/muse-wiki.el (muse-wiki-handle-interwiki): Arg URL is no longer
  optional.  That was a bad idea on my part.  Renamed from
  `muse-wiki-interwiki-handle'.  Hopefully all this renaming doesn't
  annoy anyone :^) .

* lisp/muse-wiki.el (muse-wiki-expand-interwiki): Renamed from
  `muse-wiki-interwiki-expand'.
  (muse-wiki-handle-wikiword): Renamed from
  `muse-wiki-wikiword-handle'.

* lisp/muse-wiki.el ("muse-colors", "muse-publish"): Use a string value
  for the eval-after-load arg since XEmacs chokes on constants.

* lisp/muse-wiki.el (muse-wiki-colors-wikiword): Don't display a bad-link
  face on WikiWords that don't correspond with a file.  If people really
  want this to appear in bad-link face, I could accommodate that.

* lisp/muse.el (muse-handle-url): New function that detects whether the
  given string is a URL.
  (muse-implicit-link-functions): Renamed from
  `muse-mode-link-functions'.  Defaults to `muse-handle-url'.
  (muse-explicit-link-functions): Renamed from
  `muse-mode-handler-functions'.
  (muse-handle-implicit-link): New function that handles all
  implicit links by calling functions from `muse-implicit-link-functions'.
  (muse-handle-explicit-link): Renamed from
  `muse-handled-url'.

git-archimport-id: mwolson@gnu.org--2005/muse--main--1.0--patch-85