Get rid of muse-regexp-space. Standardize anchor markup somewhat.

Get rid of muse-regexp-space.  Standardize anchor markup somewhat.

* lisp/muse-colors.el (muse-colors-markup, muse-colors-custom-tags):
  Replace muse-regexp-space with muse-regexp-blank.  Too many Emacs
  functions treat [:blank:]+\n differently than [:space:], so we'll use
  the former everywhere.

* lisp/muse-convert.el (muse-write-citation): Ditto.

* lisp/muse-mode.el (muse-current-word, muse-link-at-point): Ditto.

* lisp/muse-protocols.el (muse-update-url-regexp): Ditto.

* lisp/muse-publish.el (muse-publish-markup-regexps)
  (muse-publish-markup-tag, muse-publish-surround-text)
  (muse-publish-markup-list): Ditto.

* lisp/muse-regexps.el (muse-tag-regexp, muse-implicit-link-regexp):
  Ditto.

* lisp/muse-registry.el (muse-registry-url-regexp): Ditto.

* lisp/muse-regexps.el (muse-regexp-space): Remove.

* lisp/muse-docbook.el (muse-docbook-markup-functions): Use
  muse-xml-markup-anchor.
  (muse-docbook-markup-strings): Add markup strings for anchors.
  (muse-docbook-insert-anchor, muse-docbook-markup-anchor): Remove.

* lisp/muse-html.el (muse-html-markup-footnote): Use muse-insert-markup.

* lisp/muse-latex.el (muse-latex-markup-functions): Remove anchor rule,
  since we now have a sane default in muse-publish.el.
  (muse-latex-markup-strings): Add markup strings for anchors.
  (muse-latex-insert-anchor, muse-latex-markup-anchor): Remove.

* lisp/muse-publish.el (muse-publish-markup-anchor): Consult markup
  strings.  If style does not handle anchors, remove them.

* lisp/muse-texinfo.el (muse-texinfo-markup-functions): Remove anchor
  rule, since we now have a sane default in muse-publish.el.
  (muse-texinfo-markup-strings): Add markup strings for anchors.
  (muse-texinfo-insert-anchor, muse-texinfo-markup-anchor): Remove.

* lisp/muse-xml-common.el (muse-xml-markup-anchor): New generic routine
  for handling anchors.
  (muse-xml-markup-table): Pass row-len to begin-table-group markup
  string.

* lisp/muse-xml.el (muse-xml-markup-strings): Add markup strings for
  anchors.
  (muse-xml-insert-anchor, muse-xml-markup-anchor): Remove.
git-archimport-id: mwolson@gnu.org--2005/muse--main--1.0--patch-317