Bug with texdef (currfile) in frozen TexLive 2011

Question

To keep in line with the Q&A format:

I am on Ubuntu Lucid, with the frozen TexLive 2011, from where I installed texdef. Unfortunately, when I ran one of the examples from the help (and I installed xspace) specifically for this, I got:

$ texdef -t latex -l -p xspace
:
Compile error: Undefined control sequence.

What is the problem?

---

EDIT:

Versions discussed here:

$ texdef --version
texdef: Version 1.6 -- 2012/05/02

$ grep -A3 'ProvidesPackage' `kpsewhich currfile.sty`
\ProvidesPackage{currfile}[%
    2012/05/06
    v0.6
    Provides the file path elements of the current input file]

Answer 1

This issue is fixed in v1.7b from 2012/05/15 available from CTAN and from the Bitbucket Mercurial Repository including a TDS ZIP file for easy install. There is also a bug tracker where issues can be reported. Please ensure that you have the latest released version before reporting issues.

The same is true for currfile: CTAN, Bitbucket Mercurial Repository.

Answer 2

Thankfully, texdef is a Perl script - so I added a print $_ to the texpipe, to observe results - and the texing process was crashing at:

! Undefined control sequence.
l.42         \currfile@realmainfilefalse

! Extra \fi.
l.53 \fi\fi

Since texdef depends on currfile, that must be the source of errors - and indeed, there are some mismatching definitions:

$ grep -i '20..\|ifcurrfile@abspath' `kpsewhich currfile-abspath.sty`
    2012/05/06
\newif\ifcurrfile@abspath@windows
    \ifcurrfile@abspath@windows
$ grep -i '20..\|ifcurrfile@abspath' `kpsewhich currfile.sty`
    2012/05/06
\RequirePackage{filehook}[2011/01/09]
    \ifcurrfile@abspath
\ifcurrfile@abspath
    \ifcurrfile@abspath
\ifcurrfile@abspath
\ifcurrfile@abspath
\ifcurrfile@abspath
        \@namedef{ver@fink.sty}{2011/01/09}%


$ grep 'ifcurrfile@' `kpsewhich currfile-abspath.sty`
\newif\ifcurrfile@abspath
    \ifcurrfile@abspath

$ grep 'ifcurrfile@' `kpsewhich currfile.sty`
\let\ifcurrfile@realmainfile\relax
\expandafter\ifx\csname ifcurrfile@realmainfile\endcsname\relax
    \ifcurrfile@abspath
\ifcurrfile@abspath
\ifcurrfile@realmainfile
    \ifcurrfile@abspath
\ifcurrfile@abspath
\ifcurrfile@abspath
\ifcurrfile@realmainfile
\ifcurrfile@abspath
\ifcurrfile@fink

These two hacks seem to solve the problem:

sed -i 's/ifcurrfile@abspath@windows/ifcurrfile@abspath/' `kpsewhich currfile-abspath.sty`
sed -i 's_\\let\\ifcurrfile@realmainfile_\\newif\\ifcurrfile@realmainfile\n\\let\\ifcurrfile@realmainfile_' `kpsewhich currfile.sty`

And now I can happily run the example command line:

$ texdef -t latex -l -p xspace
Defined by file 'xspace.sty':
\xspace
\xspaceaddexceptions
\xspaceremoveexception