[debbugs-tracker] bug#26013: closed ((srfi srfi-37) chokes on empty string parameter)

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Your message dated Thu, 20 Apr 2017 10:59:47 +0200
with message-id <address@hidden>
and subject line Re: bug#26013: (srfi srfi-37) chokes on empty string parameter
has caused the debbugs.gnu.org bug report #26013,
regarding (srfi srfi-37) chokes on empty string parameter
to be marked as done.

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26013: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=26013
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> --- Begin Message ---
>
>
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> Subject: 
>
> (srfi srfi-37) chokes on empty string parameter
>
>
>
>
> Date: 
>
> Tue, 07 Mar 2017 16:34:54 +0100 (CET)
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>
>
>
> Hello Guilers,
>
> It looks like Guile's srfi-37 implementation doesn't process empty 
> string arguments correctly.  For example, here's a stacktrace I get 
> when executing guix system list-generations "":
>
> $ guix system list-generations ""
> Backtrace:
> In ice-9/boot-9.scm:
>  160: 15 [catch #t #<catch-closure 188c1c0> ...]
> In unknown file:
>    ?: 14 [apply-smob/1 #<catch-closure 188c1c0>]
> In ice-9/boot-9.scm:
>   66: 13 [call-with-prompt prompt0 ...]
> In ice-9/eval.scm:
>  432: 12 [eval # #]
> In ice-9/boot-9.scm:
> 2404: 11 [save-module-excursion #<procedure 18af900 at 
> ice-9/boot-9.scm:4051:3 ()>]
> 4056: 10 [#<procedure 18af900 at ice-9/boot-9.scm:4051:3 ()>]
> 1727: 9 [%start-stack load-stack ...]
> 1732: 8 [#<procedure 18c3b70 ()>]
> In unknown file:
>    ?: 7 [primitive-load 
> "/gnu/store/hnbqdmfh1bwma8nmpai6ci76h5j6bl7j-guix-0.12.0-4.d9da/bin/.guix-real"]
> In guix/ui.scm:
> 1228: 6 [run-guix-command system "list-generations" ""]
> In ice-9/boot-9.scm:
>  160: 5 [catch srfi-34 #<procedure 47e1580 at guix/ui.scm:432:2 ()> 
> ...]
>  160: 4 [catch system-error ...]
> In guix/scripts/system.scm:
>  947: 3 [#<procedure 47e2b10 at guix/scripts/system.scm:946:2 ()>]
> In ice-9/boot-9.scm:
>  160: 2 [catch misc-error #<procedure 47e4c00 at 
> guix/scripts.scm:48:4 ()> ...]
> In srfi/srfi-37.scm:
>  220: 1 [next-arg]
> In unknown file:
>    ?: 0 [string-ref "" 0]
>
> ERROR: In procedure string-ref:
> ERROR: Value out of range: 0
>
> cheers,
>
> Thomas
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#26013: (srfi srfi-37) chokes on empty string parameter
>
>
>
>
> Date: 
>
> Thu, 20 Apr 2017 10:59:47 +0200
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)
>
>
>
>
> On Wed 19 Apr 2017 18:32, Thomas Danckaert <address@hidden> writes:
>
> >> On Tue 07 Mar 2017 16:34, Thomas Danckaert <address@hidden>
> >> writes:
> >>
> >>> It looks like Guile's srfi-37 implementation doesn't process empty
> >>> string arguments correctly.
> > I don't fully understand the code in srfi-37.scm, but I think the fix
> > can be as simple as the attached patch (i.e. first check if the argument
> > is empty, otherwise check if it starts with \#-).
>
> Applied, thanks :)
>
> Andy
>
>
> --- End Message ---