<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#000000"> On 22.06.2010 10:40, Valeriya Pudova wrote: <blockquote cite="mid:4C205AD7.3000409@digitalchile.net" type="cite"> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> <blockquote cite="mid:4C205058.4040307@digitalchile.net" type="cite"> <blockquote cite="mid:AANLkTiki-Mku2tYbBIOkpHfPPZWE2EQDcDb_V9CzYpA4@mail.gmail.com" type="cite"> <div class="moz-text-plain" wrap="true" graphical-quote="true" style="font-family: -moz-fixed; font-size: 13px;" lang="x-western"> <blockquote type="cite" style="color: rgb(0, 0, 0);"> </blockquote> <pre wrap="">The continuation marks included in the exception are effectively a stack trace, and you can convert them into locations. See the docs. </pre> </div> </blockquote> :) Reading about continuation marks. </blockquote> Great feature those continuation marks. But does not looks helpful this case. To be able to get mark i should set it before. Is it not? </blockquote> Wow! (define (foo a b)   (for-each (lambda (e) (display e)(newline)) (continuation-mark-set->context (current-continuation-marks)))) (define (bar a b)   (foo a b)) (bar 1 2) => (foo . #(struct:srcloc c:\documents and settings\v\desktop\test.ss 2 0 2 127)) (call-with-exception-handler . #(struct:srcloc C:\Racket\collects\racket\private\more-scheme.rkt 274 2 9287 256)) (loop . #(struct:srcloc C:\Racket\collects\drracket\private\rep.rkt 1134 19 47088 797)) (call-with-break-parameterization . #(struct:srcloc C:\Racket\collects\racket\private\more-scheme.rkt 158 2 5099 519)) (#f . #(struct:srcloc C:\Racket\collects\drracket\private\rep.rkt 1115 9 46083 2670)) (loop . #(struct:srcloc C:\Racket\collects\drracket\private\rep.rkt 1375 17 58510 808)) Interesting. There are no the function bar in the backtrace. Why? </body> </html>