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Top Forums Shell Programming and Scripting Real-time scenarios where VARIABLE SUBSTITUTION/EXPANSION is useful Post 302946280 by bakunin on Sunday 7th of June 2015 04:37:12 AM
Old 06-07-2015
MadeInGermany, you are right. You are right too in pointing out that ":-" is perhaps more common than ":=". I just used this as - one - example out of a millions applications for parameter expansion in general because the threads o/p has mentioned it explicitly in his post #1.

I didn't undergo too much effort in explaining what a specific expansion could be used for because - see the first part of my answer - i think what sets apart programmers from the non-programmers is the ability to look at a certain language feature (or function, tool, ...) and come up with an idea of its useful application. People who see a certain stone and do not envision a sculpture IMHO do not have what it takes to be a sculptor either.

bakunin
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get_config_text(3alleg4)					  Allegro manual					  get_config_text(3alleg4)

NAME
get_config_text - Returns a string translated to the current language. Allegro game programming library. SYNOPSIS
#include <allegro.h> const char *get_config_text(const char *msg); DESCRIPTION
This function is primarily intended for use by internal library code, but it may perhaps be helpful to application programmers as well. It uses the `language.dat' or `XXtext.cfg' files (where XX is a language code) to look up a translated version of the parameter in the cur- rently selected language. This is basically the same thing as calling get_config_string() with `[language]' as the section, `msg' as the variable name, and `msg' as the default value, but it contains some special code to handle Unicode format conversions. The `msg' parameter is always given in ASCII format, but the returned string will be converted into the current text encoding, with memory being allocated as required, so you can assume that this pointer will persist without having to manually allocate storage space for each string. Note that if you are planning on distributing your game on the Unix platform there is a special issue with how to deal with the `lan- guage.dat' file. Read section "Files shared by Allegro" of the chapter "Unix specifics" to learn more about this. RETURN VALUE
Returns a suitable translation if one can be found or a copy of the parameter if nothing else is available. SEE ALSO
get_config_string(3alleg4), reload_config_texts(3alleg4) Allegro version 4.4.2 get_config_text(3alleg4)
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