VIM - Python Koans plugin

Yesterday i start (again) python koans, and switching into terminal to run again and again pissed me off. So from now i press 1 combination and shell has gone away :), koans run in background and My lovely editor put cursor on last error.

Meet the VIM python koans helper:

https://github.com/exu/vim-python_koans

Output format sucks a little (because my VimL skills sucks - I didn't find solution for this ^@ ^] symbols) but it is great productivity improvement.


Picture 1: Output window with cursor on last error

Merge many PDF files into one in linux shell

Do you want to merge many PDF files into one? There you are:

Shell code:

$ gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=out.pdf in1.pdf in2.pdf

- out.pdf - destination file name
- in1.pdf, in2.pdf - source file names

(gs - Ghost Script - on Ubuntu 12.04 and OpenSuse 11.3 is installed by default)

VIM - inserting UTF-8 symbols (digraphs)

In VIM in very simple way we can insert some of UTF-8 symbols. List of available symbols we can display by running  :digraphs command

If you locate interesting symbol, you can insert him by pressing  <C-k> key combination and two letters on the left of that symbol on the left. For example equilateral triangle right ordered <C-k>PR
and here you are.

I've tested this technique in UTF-8 encoded files (in LATIN-1,2 or other there could be problems).