NAME bidi SITE http://chipstips.com/?tag=plurxvtbidi http://bitbucket.org/sterlingcamden/urxvt-bidi AUTHOR Chip Camden DATE December, 2010 DESCRIPTION Perl extension for rxvt-unicode (aka urxvt) to enable bidirectional text display. INSTALLATION See the man page for urxvtperl(3) for a full discussion of Perl extensions. Enable this extension using one of the methods documented there. For example, you could place the script bidi in /usr/local/lib/urxvt/perl, then add the following to .Xdefaults: URxvt.perl-ext: default,bidi URxvt.bidi.enabled: 1 URxvt.keysym.A-0x0062: perl:bidi toggle show This enables bidirectional text display, and maps Ctrl+B to toggle it and show the resulting state. SYNTAX As you can see, the user command requires special arguments to indicate the desired operation. Any number of arguments can follow the perl:bidi user command, and they will be executed in order. They are: on Turn on bidirectional text display off Turn it off toggle Toggle it show Show a status message indicating the current state REQUIREMENTS This extension requires the Text::Bidi perl module (http://search.cpan.org/~kamensky/Text-Bidi-0.03/lib/Text/Bidi.pm), as well as the fribidi library on which it relies. On FreeBSD, simply install the converters/p5-Text-Bidi port. OPERATION If bidirectional text display is enabled, then whenever text is added to the terminal window (the on_add_lines event), the text will be piped through the Text::Bidi log2vis() function to reorder any RTL text found in the display. This permanently changes the order of that text in urxvt, so any other urxvt extensions which extract the text will see the text in the new order. Because the transformation only occurs as text is added, changing the bidirectional state does not affect text that has already been displayed. You would need to redisplay that text to get it re-ordered. For instance, in vi/vim/mutt, etc., a Ctrl-L will do the job. RESOURCES The "URxvt.bidi.enabled" resource dictates the initial state of bidirectional text display. If 1, it is enabled. If 0, it is disabled.
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