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  • DocBook XSL, the book – incorrect IRC channel

    DocBook XSL: The Complete Guide – 4th Edition, Chapter 1. Introduction,  Online resources for finding solutions to problems (the paper book and the online version as well) says, that the IRC channel of DocBook would be at irc://irc.openprojects.net#docbook, but it actually is at irc://irc.freenode.net#docbook.

    http://www.docbook.org/help had the right information.

    This is not on their Errata yet, and I told webmaster(AT)sagehill.net about this problem in the meantime. I only wondered for a very, very short time, whether anybody will ever come back to me.
    Bob Stayton (himself) answered at 2010-07-06 22:12:18 (my time at Berlin, ie. only an hour or so later):

    Apparently it changed since that was written.
    I’ll put the new address in the next edition and add to the Errata.
    Thanks for the report.

    As I said, I will update this here, once I will notice their update.

  • NoScript, XSS risks, flattr, Firefox

    I really loved to use NoScript, the plugin for Firefox. But after I decorated my blogs with these flattr buttons, I started having to much hassle.
    Adding an exception rule didn’t lead to the expected result.
    I have got no further time to fix that, I switched of NoScript. R.I.P.

    I really felt a lot safer with NoScript running and surverying my surfing activities.

  • unit tests for my procmailrc

    I love adding procmail rules, as getting my incoming e-mail almost perfectly sorted eases my life in such a tremendous way – but sometimes that really frightens me.
    I just thought, if I ever get around “to it”, I will write unit tests for my procmailrc.

  • Catalyst based CMSs

    According to cms.wikia.com/wiki/Impl these are the current Catalyst (so esp. implemented in perl)
     based CMSs:

    Can anybody help me selecting “the right one”?

    O, what do I want to use it for?
    I got a few web-sites, most of them more or less plain text (HTML!), generated from DocBook, and I want them to look a little more spicy, maybe with a left and a right column and all that.
    Alright, coming from DocBook maybe I should also have a look at DocBook website, a variant of DocBook for dealing with websites. But I want to consider the alternatives.

  • Polish court to decide on Brodsky

    … Polish authorities may deport alleged Israeli spy Uri Brodsky to
    Germany this week. …     The Brodsky affair has caused friction with two of Israel’s most
    important European partners. According to media reports in Germany,
    Israel has
    turned the diplomatic screws on Poland and Germany to prevent an
    extradition of
    Brodsky to Germany.
    A Polish diplomat told the Warsaw-based Rzeczpospolita daily in June: “If we extradite him, we will anger the Israelis. If we release him, we will anger the Germans.

    When we discovered this man… we should have pretended that we had not seen him. But now it is too late.”

    The federal prosecutor told The Jerusalem Post in June that the matter is based on the forgery of a German passport and illicit secret service activity in the Federal Republic. He insisted that the pursuit of the alleged secret service agent is purely a legal matter, and would not identify the agent as Israeli. …

  • App::perlbrew – Manage perl installations in your $HOME or wherever you want

    Prerequisites:
    • $ zypper install patch
    • $ zypper install gcc
    • …
    Caveat:
    • yes, “perlbrew install” occasionally and too often  needs “–force” and even “–notest“, don’t be too surprised! my “5.14.2” and also my “5.16.1” needed it
    • …
    Main links:

    $ export PERLBREW_ROOT=/opt/perlbrew
    $ curl -kL http://install.perlbrew.pl | bash
    # or maybe like this:
    $ perlbrew self-upgrade

    The developer/maintainer does not have in mind this use case as the main use case!! But it is my main use case.
    What to do after installing a new perl, that you consider your new stable perl?

    $ perlbrew alias create perl-RELEASE stable

    # resp.
    $ perlbrew alias -f create perl-RELEASE stable
    # use this shebang line with $PERLBREW_ROOT expanded [Link]:
    #! $PERLBREW_ROOT/perls/stable/bin/perl

    $ perlbrew switch stable # this will be our usual starting point!!!

    # but “perlbrew list-modules” does not work on such an alias, so “perlbrew use” to a non-alias before!

    • Have a serious look at “$ perlbrew help” once in a while!!!



    I decided to make use of $PERLBREW_ROOT, as I want to keep my home $HOME minimial, just data and scripts, no big files, they all go to other disks. And right, my home directory is on an encrypted partition, and this sort of stuff certainly does not get encrypted.

    $ export PERLBREW_ROOT=/usr/local/perlbrew

    Therefore my perlbrew is installed as:

    /usr/local/perlbrew/bin/perlbrew

    They suggest, that my $HOME/.bashrc should “source” their …/etc/bashrc, but for the time being I let my $HOME/.profile do this, as IMHO this is right place.
    So actually this is according to best practices for shell programming the right way (for me) to do it, and now this code is of course included in my $HOME/.profile:


    # for perl’s App::perlbrew :
    export          PERLBREW_ROOT=/usr/local/perlbrew # on my Linux boxes
    export          PERLBREW_ROOT=/sw/perlbrew # on my Mac box(es)
    source         $PERLBREW_ROOT/etc/bashrc
    ##export  PATH=$PERLBREW_ROOT/bin:$PERLBREW_ROOT/perls/current/bin:${PATH}
    path_prepend   $PERLBREW_ROOT
    path_prepend   $PERLBREW_ROOT/perls/current


    BTW: always “$ hash -r” after switching, so you avoid getting certain perl resp. perlbrew related error messages like this one and a few others (confusion of the right installation directory):

    bash: …: No such file or directory

    I successfully brewed 5.10.1 and 5.12.1 on openSUSE-11.2, but on OS X Snow Leopard I only brewed 5.12.1 successfully, brewing 5.10.1 failed.


    To be continued …


    Update 2011-10-16:
    On my Mac running Lion I was able to perlbrew these releases of perl

    • perl-5.15.3 and
    • perl-5.14.2
    • but not perl-5.12.4, 5.10.1, 5.8.9, 5.6.2
    but that seems more than sufficient to me.

    Looks like OS X got targeted as a serious platform for perl development only rather recently.
    …


    Update 2012-10-07: A historic note: I first looked into perlbrew in the context of “biz-JG”.

  • “java forever” — an amazing Youtube video

  • ruby, gsub, and backslash characters within the replacement

    My ruby problem of the day: I have e-mail addresses, and I want to use them within procmail rules. Therefore certain characters like the dot character and also the “+”  need escaping.

    It took me an endless while, like certain things always take an endless while on unknown grounds.

    I started with single quotes just as in the gsub examples in the pickaxe3 book.

    I didn’t get the right number of backslashs in place within the replacement string, as long as the replacement string used single quotes.

    Finally a Google search for “ruby gsub replacement backslash” led me to a solution. Not to an overly serious one, to be honest.

    The example there used double quotes, so I replaced my single quotes with double quotes, and I started again increasing the number of accumulated backslash characters. That way I achieved within a pretty short time, what I needed to achieve. Not that I had learned too much.

  • Ruby User Group Berlin / 2010-07-01 “meetup” / a brief report

    At today’s meeting of RUG-B

    • and  Benjamin Krause talked to us about Unobtrusive Google Analytics Event Tracking.

    Of course both presentations were given with quite some compentence and professionality, but the Google App thing excited me personally far more.
    Here are
    I am rather keen to see Jan‘s slides and his code getting announced on the Google Group.
    Well, ruby apps run in a Google App environment through jruby, which in turn runs on a JVM. Jan told us of two different working approaches. Rails does run in theory in that environment, but it takes way too long to start. Instead Sintra seems to be the ruby framework of choice wrt the Google App Engine.

    I might err there …, sorry, rephrase:
    maybe that question is heretic, but simply put: what’s the status of perl on the Google App Engine?
    Looks like nothing moved after 2009-07-01 with perl-appengine, right?
    I personally would love to see a perl app say “hello world!” on the Google App Engine.

    RUG-B’s mailing list lives on Google Groups.

  • some *-berlin.de domains

    All of a sudden today I thought I should register a couple of domains.
    Here they are:

    Quite a good start — even e-mail addresses are set up!
    If you want to have any such e-mail address — talk to me!