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Ruby Vim script
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It turns out that ruby is pretty good at maths and deals well with complex or rational numbers etc. Anyway, in certain occasions a postfix syntax and a stack are better suited for calculations than ruby's infix syntax. So, here comes ... :TCalc[!] A small ruby-based[*] RPN-calculator, a simple ASCII function plotter, and stack-based playground :-). The tcalc.rb script can also be used as a stand-alone calculator (with optional support for curses and readline). Run "tcalc --help" for information on the command-line options. Input: - Numbers (anything that starts with "-" or a decimal) - Strings (anything that matches /^"(.*?)"$/) - Be aware that the strings and numbers get evaluated by ruby. You can thus execute ruby code by input like: -1;p'foo' - Methods & constants of the following classes are available: Float :: http://www.ruby-doc.org/core/classes/Float.html Complex :: http://www.ruby-doc.org/core/classes/Complex.html Rational :: http://www.ruby-doc.org/core/classes/Rational.html Integer :: http://www.ruby-doc.org/core/classes/Integer.html Matrix :: http://www.ruby-doc.org/core/classes/Matrix.html Vector :: http://www.ruby-doc.org/core/classes/Vector.html Math :: http://www.ruby-doc.org/core/classes/Math.html - #N (pull the item at position N to the top) - Call words: WORD[COUNT][@ARRITY][,ARGUMENT] - If COUNT is "#", the top element will be used. - Enter, escape => exit Tokens are separated by blanks (à la forth). The blanks between the words thus are significant. [*] For use with VIM, built-in ruby support (:echo has('ruby')) is required. ----------------------------------------------------------------------- Status: Works for me (there may be some minor quirks) Install: See http://github.com/tomtom/vimtlib/blob/master/INSTALL.TXT See http://github.com/tomtom for related plugins.