[Python-checkins] CVS: python/dist/src/Doc/lib libre.tex,1.66,1.67

[Eric S. Raymond]

Update of /cvsroot/python/python/dist/src/Doc/lib
In directory usw-pr-cvs1:/tmp/cvs-serv3406

Modified Files:
	libre.tex 
Log Message:
Plant a mention in the description of backreferences of the fact that
while \0 doesn't do what one might expect, \g<0> does.



Index: libre.tex
===================================================================
RCS file: /cvsroot/python/python/dist/src/Doc/lib/libre.tex,v
retrieving revision 1.66
retrieving revision 1.67
diff -C2 -d -r1.66 -r1.67
*** libre.tex	2001/08/02 20:52:00	1.66
--- libre.tex	2001/08/28 12:50:03	1.67
***************
*** 298,301 ****
--- 298,303 ----
  is 0, or \var{number} is 3 octal digits long, it will not be interpreted
  as a group match, but as the character with octal value \var{number}.
+ (There is a group 0, which is the entire matched pattern, but it can't
+ be referenced with \regexp{\e 0}; instead, use \regexp{\e g<0>}.)
  Inside the \character{[} and \character{]} of a character class, all numeric
  escapes are treated as characters. 
***************
*** 567,571 ****
    ambiguous in a replacement such as \samp{\e g<2>0}.  \samp{\e 20}
    would be interpreted as a reference to group 20, not a reference to
!   group 2 followed by the literal character \character{0}.
  \end{funcdesc}
  
--- 569,575 ----
    ambiguous in a replacement such as \samp{\e g<2>0}.  \samp{\e 20}
    would be interpreted as a reference to group 20, not a reference to
!   group 2 followed by the literal character \character{0}.  The
!   backreference \samp{\e g<0>} substitutes in the entire substring
!   matched by the RE.
  \end{funcdesc}