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Callers changed to do that work before calling apropos-print.
Make *Apropos* buffer read only.

should always do just describe-variable.

(apropos-command): Let `var-predicate' have higher priority than
`do-all'.

and use it as a predicate for which variables to match.
(apropos-variable): Use that feature to match all documented vars,
if have prefix arg.

when calling apropos-print-doc.

(apropos-command): New arg JUST-VARS.

(apropos-print): Ditto.

(apropos-print): Ditto.

instead, bind SPC and DEL directly.

than `highlight' to distinguish it from mouse-face highlighting of
hyperlinks.
(apropos-mode-map): Rename from `apropos-local-map'.
(apropos-mode): Set it rather than have a local-map that made RET
locally unusable when copied to other buffer.
(apropos-print): Use it.  When there is only one property, show
what it is.  Remove superfluous `save-excursion', thus making help
commands' return-message be correct.
(apropos-print, apropos-describe-plist): `print-help-return-message'
like help commands.

(apropos-mouse-follow): Do save-excursion.
Error if not adjacent to a mouse-face property.

on the whole printed symbol.
(apropos-follow): Look for the item property only adjacent to point.
Signal an error if there is none.

not as a text property.

(apropos-follow): Don't print a "how to get back" message.

(apropos-follow): Fix error message.

(apropos): Only show unbound symbols when do-all
(apropos-documentation-check-elc-file): new copied function.
(apropos-command): also use `apropos-do-all' when called as function.
(apropos-print-doc): renamed from `apropos-print-documentation', i
is numeric index, replaces parameter tem.
(apropos-macrop): new function.
(apropos-print): use it to differentiate macros.
(apropos-symbol-face, apropos-keybinding-face, apropos-label-face)
(apropos-property-face, apropos-match-face): new variables
replace and extend the effect of `apropos-use-faces'.
(apropos-safe-documentation): renames `safe-documentation', also
returns a cons.
(apropos-regexp, apropos-files-scanned, apropos-accumulator)
(apropos-item): new variables to prevent compiler warnings.
(apropos-value-internal, apropos-documentation-internal): new fns.

(apropos-use-faces, apropos-local-map): New variables.
(apropos-command): New name for `command-apropos' no longer in help.el.
(apropos-value): New command.
(apropos-documentation): New name for `super-apropos'
(apropos-follow, apropos-mouse-follow): New commands for hypertext.
(apropos-describe-plist): New function.

(apropos-worthy-symbol-p): New function.

specifies which file to search.
(apropos-files-scanned): New variable.
(super-apropos): Bind apropos-files-scanned.
Update apropos-accumulate from apropos-print-matches.
Call super-apropos-accumulate before checking for no matches.
(super-apropos-check-doc-file): Don't visit the file, just insert it.
(super-apropos-accumulate): When doc string is in a file, scan that file.
(apropos-print-matches): Return the sorted list.
(safe-documentation): Handle compiled files.

(super-apropos-accumulate): Vars item, fn-doc and var-doc renamed
to apropos-item, apropos-fn-doc and apropos-var-doc.
(apropos-item, apropos-var-doc, apropos-fn-doc)
(apropos-accumulate, apropos-regexp): New defvars.
(super-apropos): Bind apropos-regexp to regexp.
(super-apropos-accumulate): Use apropos-regexp.

(apropos-match-keys): Handle minor mode maps
and overriding-local-map.