Re: bug in man page of lex(1)

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Article #1246

#1246

From: Esmond Pitt
Date: Fri, 18 Nov 1988 03:28

16 lines
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In article <1953@vedge.UUCP> lai@vedge.UUCP (David Lai) writes:
< The lex(1) man page says:
< 	...yyless(p) ... p should be between yytext and yytext+yyleng
< however the lex users manual says:
< 	yyless(n), n=number of chars to retain in yytext
< The bahaviour of lex is that of the latter.

When I last unpicked yyless() (System III), it actually handled both
cases, by figuring out at run-time whether it had received a pointer (
yytext <= p <= yyleng), otherwise treating p as an integer. Yuck.  This
may have been extreme friendliness on the part of System III, or
someone at Zilog.

-- 
Esmond Pitt, Austec International Ltd
...!uunet.UU.NET!munnari!ausmelb!ejp,ejp@ausmelb.oz

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!munnari!murtoa.cs.mu.oz.au!ausmelb!ejp
From: ejp@ausmelb.oz (Esmond Pitt)
Newsgroups: comp.bugs.4bsd,comp.bugs.sys5
Subject: Re: bug in man page of lex(1)
Keywords: yyless
Message-ID: <800@ausmelb.oz>
Date: 18 Nov 88 03:28:52 GMT
References: <1953@vedge.UUCP>
Reply-To: ejp@ausmelb.oz (Esmond Pitt)
Organization: Austec International Limited, Melbourne
Lines: 16

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