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bug#24819: Intermittent 00-repl-server.test failure in 2.0.13

From: Ludovic Courtès
Subject: bug#24819: Intermittent 00-repl-server.test failure in 2.0.13
Date: Fri, 04 Nov 2016 22:50:11 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux)


Rob Browning <address@hidden> skribis:

> I noticed that 00-repl-server.test had failed on some of the debian
> buildds like this:
>   Running 00-initial-env.test
>   Running 00-repl-server.test
>   FAIL: 00-repl-server.test: repl-server: simple expression - arguments: 
> (expected-value "scheme@(repl-server)> $1 = 42\n" actual-value "$1 = 42\n")

The reason is that ‘repl-reader’ in boot-9.scm goes like this:

  (lambda* (prompt #:optional (reader (fluid-ref current-reader)))
    (if (not (char-ready?))
          (display (if (string? prompt) prompt (prompt)))
          (set-port-column! (current-output-port) 0)))
    (run-hook before-read-hook)
    ((or reader read) (current-input-port)))

Thus, if there’s already data available on the current input port, it
does not print the prompt.

That situation can arise in 00-repl-server.test if we write “(+ 40 2)”
too quickly.

Fixed in 2fbde7f02adb8c6585e9baf6e293ee49cd23d4c4.



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