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From: | Paolo Bonzini |
Subject: | Re: [Help-smalltalk] ANSI Escape Codes |
Date: | Wed, 09 Jul 2014 09:26:52 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 |
Il 08/07/2014 23:02, Ryland Taylor-Almanza ha scritto:
Looks like it works! Thanks Paolo! I don't really understand what that's doing, though. Do you have any resources you could link that explain what that whole (<string> % #($<16r1B>)) bit does?
"%" is just a so called "interpolation" operator. It looks for sequences that look like %number and replaces them with elements from the array on the right of the %.
In this case the array has one element and that element is a character with ASCII code 1B (in hexadecimal).
So the %1 in "%1[31mHi" is replaced with the escape character and printed. Paolo
On Tue, Jul 8, 2014 at 12:58 PM, Paolo Bonzini <address@hidden> wrote:Il 08/07/2014 19:58, Ryland Taylor-Almanza ha scritto:Looks like I'm running 3.2.5, which came from my system's repos. Is it recommended that I use the 3.3 alpha?No, my mistake---it's just ('%1[31mHi' % #($<16r1B>)) displayNl. with an uppercase B. PaoloOn Tue, Jul 8, 2014 at 10:26 AM, Paolo Bonzini <address@hidden> wrote:Il 08/07/2014 18:29, Ryland Taylor-Almanza ha scritto:This seems to be giving me the following error. stdin:1: parse error, expected '>'You're probably using an older version of GNU Smalltalk. What version are you running on ("Smalltalk version" will tell you). PaoloMy apologies if I'm missing something. I'm a bit new to smalltalk On Tue, Jul 8, 2014 at 1:13 AM, Paolo Bonzini <address@hidden> wrote:Il 08/07/2014 02:50, Ryland Taylor-Almanza ha scritto:I'm trying to make a console-based program that makes use of ANSI escape codes. I can't seem to figure out how to go about printing a string object formatted with ANSI escape codes. I've tried the following. '\x1b[31mHi' displayNlYou can use formatted strings to put the Escape character in place: ('%1[31mHi' % #($<16r1b>)) displayNl. Paolo _______________________________________________ help-smalltalk mailing list address@hidden https://lists.gnu.org/mailman/listinfo/help-smalltalk_______________________________________________ help-smalltalk mailing list address@hidden https://lists.gnu.org/mailman/listinfo/help-smalltalk
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