Fix typos, and general docstring cleanup.

* nxml/nxml-glyph.el (nxml-glyph-set-hook):
* nxml/nxml-uchnm.el (nxml-unicode-blocks)
(nxml-unicode-block-char-name-set):
* nxml/nxml-util.el (nxml-debug, nxml-make-namespace):
* nxml/rng-nxml.el (rng-set-state-after):
* nxml/rng-uri.el (rng-file-name-uri): Fix typo in docstring.

* nxml/rng-cmpct.el (rng-c-lookup-create, rng-c-parse-primary)
(rng-c-parse-annotation-body):
* nxml/rng-dt.el (rng-dt-namespace-context-getter): Reflow docstrings.

* nxml/nxml-mode.el (nxml, nxml-mode, nxml-after-change1)
(nxml-extend-region, nxml-merge-indent-context-type, nxml-complete)
(nxml-forward-balanced-item, nxml-dynamic-markup-word)
(nxml-define-char-name-set, nxml-toggle-char-ref-extra-display):
Fix typos in docstrings.
(nxml-attribute-indent): Reflow docstring.
(nxml-bind-meta-tab-to-complete-flag, nxml-last-fontify-end)
(nxml-default-buffer-file-coding-system): Doc fixes.

* nxml/nxml-ns.el (nxml-ns-state, nxml-ns-initial-state)
(nxml-ns-set-prefix): Fix typos in docstrings.
(nxml-ns-push-state, nxml-ns-pop-state, nxml-ns-set-default):
Reflow docstring.
(nxml-ns-get-prefix, nxml-ns-get-default): Doc fixes.

* nxml/nxml-outln.el (nxml-hide-all-text-content)
(nxml-show-direct-text-content, nxml-show-direct-subheadings)
(nxml-hide-direct-text-content, nxml-hide-subheadings)
(nxml-hide-text-content, nxml-show-subheadings, nxml-hide-other)
(nxml-outline-display-rest, nxml-outline-set-overlay)
(nxml-section-tag-forward, nxml-section-tag-backward)
(nxml-back-to-section-start): Fix typos in docstrings.

* nxml/nxml-parse.el (nxml-validate-function, nxml-parse-file):
Doc fixes.

* nxml/nxml-rap.el (nxml-scan-end, nxml-move-tag-backwards)
(nxml-scan-element-forward, nxml-scan-element-backward): Doc fixes.
(nxml-scan-after-change): Fix typo in docstring.

* nxml/rng-match.el (rng-being-compiled, rng-normalize-choice-list)
(rng-name-class-possible-names): Doc fixes.
(rng-memo-map-add, rng-intern-group, rng-match-possible-namespace-uris)
(rng-match-possible-start-tag-names, rng-match-possible-value-strings):
Fix typos in docstrings.
(rng-intern-group-shortcut, rng-intern-choice-shortcut):
Reflow docstrings.

* nxml/rng-util.el (rng-uniquify-eq, rng-uniquify-equal): Doc fixes.
(rng-substq, rng-complete-before-point): Fix typos in docstrings.

* nxml/rng-xsd.el (rng-xsd-make-date-time-regexp)
(rng-xsd-convert-date-time): Reflow docstrings.
(rng-xsd-compile): Fix typo in docstring.

* nxml/rng-loc.el (rng-current-schema-file-name)
(rng-locate-schema-file-using, rng-locate-schema-file-from-type-id):
Doc fixes.
(rng-set-schema-file): Fix typo in docstring.

* nxml/rng-valid.el (rng-error-count, rng-validate-mode)
(rng-do-some-validation, rng-process-start-tag, rng-process-text):
Fix typos in docstrings.
(rng-message-overlay, rng-conditional-up-to-date-start)
(rng-conditional-up-to-date-end): Doc fixes.
(rng-next-error, rng-previous-error): Reflow docstrings.

* nxml/xmltok.el (xmltok-attribute-raw-normalized-value): Doc fix.
(xmltok-dtd, xmltok-dependent-regions, xmltok-attribute-refs)
(xmltok-valid-char-p, xmltok-standalone, xmltok-forward-prolog)
(xmltok-merge-attributes): Fix typos in docstrings.
(xmltok-make-attribute, xmltok-forward-special)
(xmltok-get-declared-encoding-position): Reflow docstrings.

* nxml/xsd-regexp.el (xsdre-char-class-to-range-list): Doc fix.
(xsdre-range-list-union, xsdre-check-range-list, xsdre-current-regexp):
Fix typos in docstrings.

lisp/nxml/nxml-rap.el

@@ -94,16 +94,16 @@
 (defvar nxml-scan-end nil
   "Marker giving position up to which we have scanned.
 nxml-scan-end must be >= nxml-prolog-end.  Furthermore, nxml-scan-end
-must not an inside position in the following sense. A position is
+must not be an inside position in the following sense.  A position is
 inside if the following character is a part of, but not the first
 character of, a CDATA section, comment or processing instruction.
 Furthermore all positions >= nxml-prolog-end and < nxml-scan-end that
-are inside positions must have a non-nil nxml-inside property whose
-value is a symbol specifying what it is inside. Any characters with a
-non-nil fontified property must have position < nxml-scan-end and the
-correct face. Dependent regions must also be established for any
+are inside positions must have a non-nil `nxml-inside' property whose
+value is a symbol specifying what it is inside.  Any characters with a
+non-nil `fontified' property must have position < nxml-scan-end and
+the correct face.  Dependent regions must also be established for any
 unclosed constructs starting before nxml-scan-end.
-There must be no nxml-inside properties after nxml-scan-end.")
+There must be no `nxml-inside' properties after nxml-scan-end.")
 (make-variable-buffer-local 'nxml-scan-end)
 
 (defsubst nxml-get-inside (pos)
@@ -139,7 +139,7 @@ Return nil if the character at POS is not inside."
   "Restore `nxml-scan-end' invariants after a change.
 The change happened between START and END.
 Return position after which lexical state is unchanged.
-END must be > nxml-prolog-end. START must be outside
+END must be > `nxml-prolog-end'.  START must be outside
 any 'inside' regions and at the beginning of a token."
   (if (>= start nxml-scan-end)
       nxml-scan-end
@@ -301,10 +301,11 @@ Sets variables like `nxml-token-after'."
     xmltok-type))
 
 (defun nxml-move-tag-backwards (bound)
-  "Move point backwards outside any 'inside' regions or tags, up
-to nxml-prolog-end. Point will either be at bound or a '<'
-character starting a tag outside any 'inside' regions. Ignores
-dependent regions. As a precondition, point must be >= bound."
+  "Move point backwards outside any 'inside' regions or tags.
+Point will not move past `nxml-prolog-end'.
+Point will either be at BOUND or a '<' character starting a tag
+outside any 'inside' regions.  Ignores dependent regions.
+As a precondition, point must be >= BOUND."
   (nxml-move-outside-backwards)
   (when (not (equal (char-after) ?<))
     (if (search-backward "<" bound t)
@@ -353,12 +354,12 @@ Leave point unmoved if it is not inside anything special."
 
 (defun nxml-scan-element-forward (from &optional up)
   "Scan forward from FROM over a single balanced element.
-Point must between tokens.  Return the position of the end of the tag
-that ends the element. `xmltok-start' will contain the position of the
-start of the tag. If UP is non-nil, then scan past end-tag of element
-containing point.  If no element is found, return nil.  If a
-well-formedness error prevents scanning, signal an nxml-scan-error.
-Point is not moved."
+Point must be between tokens.  Return the position of the end of
+the tag that ends the element. `xmltok-start' will contain the
+position of the start of the tag.  If UP is non-nil, then scan
+past end-tag of element containing point.  If no element is
+found, return nil.  If a well-formedness error prevents scanning,
+signal an `nxml-scan-error'.  Point is not moved."
   (let ((open-tags (and up t))
 	found)
     (save-excursion
@@ -404,13 +405,13 @@ expected `%s'"
 
 (defun nxml-scan-element-backward (from &optional up bound)
   "Scan backward from FROM over a single balanced element.
-Point must between tokens.  Return the position of the end of the tag
-that starts the element. `xmltok-start' will contain the position of
-the start of the tag.  If UP is non-nil, then scan past start-tag of
-element containing point.  If BOUND is non-nil, then don't scan back
-past BOUND.  If no element is found, return nil.  If a well-formedness
-error prevents scanning, signal an nxml-scan-error.  Point is not
-moved."
+Point must be between tokens.  Return the position of the end of
+the tag that starts the element. `xmltok-start' will contain the
+position of the start of the tag.  If UP is non-nil, then scan
+past start-tag of element containing point.  If BOUND is non-nil,
+then don't scan back past BOUND.  If no element is found, return
+nil.  If a well-formedness error prevents scanning, signal an
+`nxml-scan-error'.  Point is not moved."
   (let ((open-tags (and up t))
 	token-end found)
     (save-excursion