> OK, doing racket -l errortrace -t <prog> as suggested in > http://docs.racket-lang.org/errortrace/quick-instructions.html helps.
The equivalent in racket-mode is to set `racket-error-context` to `'high`: https://github.com/greghendershott/racket-mode/blob/master/Reference.md#racket-error-context Quote: racket-error-context The level of context used for racket-run error stack traces. Each level improves stack trace information, but causes your program to run more slowly. - 'low corresponds to compile-context-preservation-enabled #f. - 'medium corresponds to compile-context-preservation-enabled #t, which disables some optimizations like inlining. - 'high corresponds to compile-context-preservation-enabled #t and to use of errortrace, which heavily instruments your code and therefore may be significantly slower. Tip: Regardless of this setting, you can enable 'high errortrace for a specific racket-run using a C-u prefix. This lets you normally run with a faster setting, and temporarily re-run to get a more-helpful error message. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.