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-inline references
-
-Some sort of macro/subroutine that can cover several references.
-
-move-punctuation should ignore multiple punctuation characters.
-
-Make the index files machine independent.
-
-Allow search keys to be negated (with !) to indicate that the
-reference should not contain the key.  Ignore negated keys during
-indexed searching.
-
-Provide an option with lkbib and lookbib that prints the location
-(filename, position) of each reference.  Need to map filename_id's
-back to filenames.
-
-Rename join-authors to join-fields.  Have a separate label-join-fields
-command used by @ and #.
-
-Have some sort of quantifier: eg $.n#A means execute `$.n' for each
-instance of an A field, setting $ to that field, and then join the
-results using the join-authors command.
-
-no-text-in-bracket command which says not to allow post_text and
-pre_text when the [] flags has been given. Useful for superscripted
-footnotes.
-
-Make it possible to translate - to \(en in page ranges.
-
-Trim eign a bit.
-
-In indexed searching discard all numeric keys except dates.
-
-Allow `\ ' to separate article from first word.
-
-%also
-
-Option automatically to supply [] flags in every reference.
-
-See if we can avoid requiring a comma before jr. and so on
-in find_last_name().
-
-Cache sortified authors in authors string during tentative evaluation of
-label specification.
-
-Possibly don't allow * and % expressions in the first part of ?:, | or
-& expressions.
-
-Handle better the case where <> occurs inside functions and in the
-first operand of ~. Or perhaps implement <> using some magic character
-in the string.
-
-Should special treatment be given to lines beginning with . in
-references?  (Unix refer seems to treat them like `%').
-
-Add global flag to control whether all files should be stat-ed after
-loading, and whether they should be stat-ed before each search.
-Perhaps make this dependent on the number of files there are.
-
-Option to truncate keys to truncate_len in linear searching.
-
-Allow multiple -f options in indxbib.
-
-In indxbib, possibly store common words rather than common words
-filename.  In this case store only words that are actually present in
-the file.
-
-Perhaps we should put out an obnoxious copyright message when lookbib
-starts up.
-
-Provide an option that writes a file containing just the references
-actually used.  Useful if you want to distribute a document.
-
-Have a magic token such that
-%A <sort stuff><magic token><print stuff>
-will print as though it were
-%A <print stuff>
-but sort as though it were
-%A <sort stuff>
-Do we need this if we can specify author alternatives for sorting?
-No, provided we have separate alternatives for @.
-
-In consider_authors when last names are ambiguous we might be able to
-use just the first name and not Jr. bit. Or we might be able to
-abbreviate the author.
-
-It ought to be possible to specify an alternative field to sort on
-instead of date. (ie if there's a field giving the type of document --
-these references should sort after any years)
-
-Provide a way to execute a command using a command-line option.
-
-Option to set the label-spec as a command-line option (-L).
-
-Command to to specify which fields can occur multiple times:
-multiple AE
-
-Command to specify how various fields sort:
-aort-as-name A
-sort-as-date D
-sort-as-title T
-sort-as-other O
-
-Command to specify which fields are author fields:
-# if we don't have A use field Q
-author-fields AQ
-
-Commands to set properties of tokens.
-sortify-token \(ae ae
-uppercase-token \[ae] \[AE]
-
-Command to set the names of months:
-months january february march april may ...
-
-Perhaps provide some sort of macro capability:
-# perhaps a macro capability
-defmacro foo
-annotation-field $1
-endef
-
-Command to control strings used in capitalization
-capitalize-start \s+2
-capitalize-end \s-2
-(perhaps make these arguments to the capitalize command.)