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Diff for /src/usr.bin/m4/m4.1 between version 1.8 and 1.9

version 1.8, 1999/11/17 15:31:53 version 1.9, 2000/01/11 14:06:11
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 parenthesis it is processed with no arguments.  parenthesis it is processed with no arguments.
 .Pp  .Pp
 Macro names consist of a leading alphabetic or underscore  Macro names consist of a leading alphabetic or underscore
 possibly followed by alphanumeric or underscore characters, therefore  possibly followed by alphanumeric or underscore characters, e.g.,
 valid macro names match this pattern [a-zA-Z_][a-zA-Z0-9_]*.  valid macro names match the pattern [a-zA-Z_][a-zA-Z0-9_]*.
 .Pp  .Pp
 In arguments to macros, leading unquoted space, tab and newline  In arguments to macros, leading unquoted space, tab and newline
 characters are ignored.  To quote strings use left and right single  characters are ignored.  To quote strings, use left and right single
 quotes (e.g., ` this is a string with a leading space').  You can change  quotes (e.g., ` this is a string with a leading space').  You can change
 the quote characters with the  the quote characters with the
 .Ic changequote  .Ic changequote
 built-in macro.  built-in macro.
   .Pp
   Some built-ins don't make any sense without arguments, and hence are not
   recognized as special when not followed by an open parenthesis.
 .Pp  .Pp
 The options are as follows:  The options are as follows:
 .Bl -tag -width "-Dname[=value]xxx"  .Bl -tag -width "-Dname[=value]xxx"
Legend:
Removed from v.1.8  
changed lines
  Added in v.1.9