/[emacs]/emacs/etc/ETAGS.EBNF
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revision 1.5 by pot, Fri Jun 21 12:05:52 2002 UTC revision 1.6 by pot, Tue Jul 2 11:35:27 2002 UTC
# Line 72  Emacs can find a tag faster and more acc Line 72  Emacs can find a tag faster and more acc
72  part of tag lines in the tags file, so we call them "explicit".  part of tag lines in the tags file, so we call them "explicit".
73    
74  - Why implicit tag names are even better  - Why implicit tag names are even better
75  The purpose of implicit tag names is to reduce the number of tag names  Often tag names are redundant; this happens when the name of a tag is an
76  in a tags file, thus reducing the size of the tags file.  When the user  easily guessable substring of the tag pattern.  We define a set of rules
77    to decide whether it is possible to deduce the tag name from the pattern,
78    and make an unnamed tag in those cases.  The name deduced from the
79    pattern of an unnamed tag is the implicit name of that tag.  The use of
80    implicit tag names reduces the size of the tags file.  When the user
81  looks for a tag, and Emacs founds no explicit tag names that match it,  looks for a tag, and Emacs founds no explicit tag names that match it,
82  Emacs then tries to match the tag with an implicit tag name.  Such a  Emacs then tries to match the tag with an implicit tag name.  Such a
83  match occurs when the tag matches a pattern, subject to the satisfaction  match occurs when the tag matches a pattern, subject to the satisfaction

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