Re: Flex and EOF

Hans-Peter Diettrich <>
10 Apr 2006 00:16:50 -0400

          From comp.compilers

Related articles
Flex and EOF (Matteo Corti) (2006-04-08)
Re: Flex and EOF (Chris Dodd) (2006-04-09)
Re: Flex and EOF (Russ Cox) (2006-04-09)
Re: Flex and EOF (Michael Tiomkin) (2006-04-09)
Re: Flex and EOF (Hans-Peter Diettrich) (2006-04-10)
Re: Flex and EOF (Matteo Corti) (2006-04-12)
Re: Flex and EOF (Ira Baxter) (2006-04-12)
| List of all articles for this month |

From: Hans-Peter Diettrich <>
Newsgroups: comp.compilers
Date: 10 Apr 2006 00:16:50 -0400
Organization: Compilers Central
References: 06-04-035
Keywords: lex
Posted-Date: 10 Apr 2006 00:16:50 EDT

Matteo Corti wrote:

> I have a rule in my lexer to skip shell-like comments:
> #.*$ /* skip comments */
> which works just fine if there is \n at the end of the line.
> If the comment is in the last line wich is terminated by EOF the rule
> obviously fails.

This is one of the reasons why e.g. C syntax (of the preprocessor)
requires that source files must end with a newline character. Do you
have full control of your syntax?


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