From: Intransition <transfire@...>
Date: 2012-04-28T12:37:31+09:00
Subject: Re: Global variable for spaces per tab?

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On Friday, April 27, 2012 5:01:37 PM UTC-4, Eric Christopherson wrote:
>
> On Apr 27, 2012 3:29 PM, "Aaron Patterson" <tenderlove@ruby-lang.org> 
> wrote:
> >
> > On Sat, Apr 28, 2012 at 05:22:47AM +0900, Ryan Davis wrote:
> > >
> > > On Apr 27, 2012, at 11:51 , Intransition wrote:
> > >
> > > > Is there any global variable in Ruby for specifying how tabs ("\t") 
> should be translated into spaces?
>
> Intransition: the amount of space shown by a tab is totally dependent on 
> the terminal used to display the text, and (unlike some terminal 
> parameters) there is no way for Ruby or any language to change it. I guess 
> the best thing you could do would be to implement a writer stream that 
> converted tabs to spaces.
>

I guess I worded that poorly. I was just wondering if there is some setting 
to be read --not change. I'm not even sure ... is there such a setting in 
shell/bash?

My use case is string unindention. Say I have a string with each line is 
prefixed with two "\t" characters and I want to unindent it by upto 2 
spaces. Then I need to translate the tabs to spaces. The unindent method 
can have an option for it, but I was wondering if there is some system 
setting I can look at for deciding a default.



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<br><br>On Friday, April 27, 2012 5:01:37 PM UTC-4, Eric Christopherson wrote:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;"><p>On Apr 27, 2012 3:29 PM, "Aaron Patterson" &lt;<a href="mailto:tenderlove@ruby-lang.org" target="_blank">tenderlove@ruby-lang.org</a>&gt; wrote:<br>
&gt;<br>
&gt; On Sat, Apr 28, 2012 at 05:22:47AM +0900, Ryan Davis wrote:<br>
&gt; &gt;<br>
&gt; &gt; On Apr 27, 2012, at 11:51 , Intransition wrote:<br>
&gt; &gt;<br>
&gt; &gt; &gt; Is there any global variable in Ruby for specifying how tabs ("\t") should be translated into spaces?<br><br></p>
<p>Intransition: the amount of space shown by a tab is totally dependent on the terminal used to display the text, and (unlike some terminal parameters) there is no way for Ruby or any language to change it. I guess the best thing you could do would be to implement a writer stream that converted tabs to spaces.<br></p></blockquote><div><br></div><div>I guess I worded that poorly. I was just wondering if there is some setting to be read --not change. I'm not even sure ... is there such a setting in shell/bash?</div><div><br></div><div>My use case is string unindention. Say I have a string with each line is prefixed with two "\t" characters and I want to unindent it by upto 2 spaces. Then I need to translate the tabs to spaces. The unindent method can have an option for it, but I was wondering if there is some system setting I can look at for deciding a default.</div><div><br></div><div><br></div>
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