color_custom.py crashed with NameError in <string>: name 'rr' is not defined

[Gen X]

1) Description: Ubuntu oneiric (development branch)
Release: 11.10

2) inkscape:
  Instalados: 0.48.2-0ubuntu1
  Candidato: 0.48.2-0ubuntu1
  Tabla de versión:
 *** 0.48.2-0ubuntu1 0
        500 http://mx.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages
        100 /var/lib/dpkg/status

3) I was editing an image when it crash
4) inkscape crash

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: inkscape 0.48.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-10.16-usernameeric 3.0.4
Uname: Linux 3.0.0-10-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.22.1-0ubuntu2
Architecture: amd64
Date: Tue Sep 13 00:15:15 2011
ExecutablePath: /usr/share/inkscape/extensions/color_custom.py
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110901)
InterpreterPath: /usr/bin/python2.7
ProcCmdline: /usr/bin/python color_custom.py --id=image2993 --r=rr --g=g --b=b /tmp/ink_ext_XXXXXX.svg6K9H1V
PythonArgs: ['color_custom.py', '--id=image2993', '--r=rr', '--g=g', '--b=b', '/tmp/ink_ext_XXXXXX.svg6K9H1V']
SourcePackage: inkscape
Title: color_custom.py crashed with NameError in <string>: name 'rr' is not defined
UpgradeStatus: Upgraded to oneiric on 2011-09-13 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Alex Valavanis (valavanisalex)]

I can reproduce this using the following procedure:

1. Extensions->Colour->Custom...

2. Enter "rr" in the "Red Function:" dialog and press "Apply". (Also occurs if "Live Preview" is enabled).

This occurs because the "rr" symbol does not exist (i.e. it's a typo in the entry field). The extension script should perform more thorough error checking on the input field before trying to process the function, and then display a user-friendly error message rather than just throwing an exception.

[su_v (suv-lp)]

Reproduced with Inkscape 0.48.2 on Mac OS X 10.5.8 (i386)
Not reproduced with Inkscape 0.48+devel r10645

Probably fixed with the commit for
  Bug #186432 “scaling of (r,g,b) parameters in Effects|Color|Custom... extension”
  <https://bugs.launchpad.net/inkscape/+bug/186432>
in revision r9794 (not backported to the stable branch:
 <http://bazaar.launchpad.net/~inkscape.dev/inkscape/trunk/revision/9794>

@Alvin - can you confirm?

[Alvin Penner (apenner)]

this was fixed in bzr rev 9727, Bug 168417. The patch was originally submitted or proposed by Alexander Gessler, I believe.

[su_v (suv-lp)]

Alvin Penner wrote:
> this was fixed in bzr rev 9727, Bug 168417

Oops - how did I miss that? ;) Thanks a lot for the information!

I will tag bug #168417 as 'back-port-proposed' - AFAICT there are no string changes in the commit, and it does not depend on other changes elsewhere.

Linking as duplicate to Bug #168417 “parameters ending with '\' causes python to bomb”. Please add a comment here and revert the duplicate status if you don't agree and think these are different issues.