printing a minus sign in RC3

I'm trying to print columnar output of numbers in RC3.  I'm having a problem
with minus signs because they aren't the same width as anything else, it
seems.   I'm wondering if this is the same result everyone gets, or if it
depends on my environment (like my font is misbehaving).   I'm using Ubuntu. 

function str_join(list,sep="",_i=0, _result="") =
    _i >= len(list)-1 ? (_i==len(list) ? _result : str(_result,list[_i])) :
    str_join(list,sep,_i+1,str(_result,list[_i],sep));

function repeat(x,n) = [for(i=[1:1:n]) x];

minus = chr(8722);
space_figure = chr(8199);

echo(str_join(["X", each repeat("-",10), "X"]));    // Hyphen character, too
short
echo(str_join(["X", each repeat(minus,10), "X"]));  // unicode minus
character
echo(str_join(["X", each repeat("0",10), "X"]));    // zero digit
echo(str_join(["X", each repeat("1",10), "X"]));    // one digit
echo(str_join(["X", each repeat(space_figure,10), "X"]));  // Figure space
echo(str_join(["X", each repeat(" ",10), "X"]));    // Regular space (wrong)


The output in my console:

<http://forum.openscad.org/file/t2477/screen.png>

I was expecting to see the line of minus signs the same with as the three
lines below with numbers and figure spaces. 









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http://jkorpela.fi/chars/spaces.html

If you pop up a level and look, you'll find

http://jkorpela.fi/dashes.html

and that will in turn lead you to FIGURE DASH U+2012 / chr(8210).

That seems to do what you need.

(But mostly I across with nop head; trying to do tabular data in a proportional font without table layout support is doomed.)

(But but ... it's really an HTML renderer, so if we (re)added HTML support...)

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I tried using tabs.  They are too weak of a tool.  They are only at every 8th
position, so I have to be very careful about the lengths of texts and I can
only align at every 8th...or likely every 16th in practice if anything
exceeds length 8 anywhere.  But worse, I can only align on the left.  So "1"
and "1000" will be left aligned instead of right aligned.  So to get
properly right aligned columns I still need to adjust spacing for every
character in the output.  It doesn't actually solve the problem at all.  It
just introduces extra complexity. 

The tab key was handy on a mechanical typewriter.....but in the modern world
they are pointless and in my opinion, mainly an annoying nuisance. 


MichaelAtOz wrote
> Experiment with tabs
> echo("1\t2");
>
>> -----Original Message-----
>> From: Discuss [mailto:

> discuss-bounces@.openscad

> ] On Behalf Of adrianv
>> Sent: Fri, 1 Jan 2021 04:25
>> To:

> discuss@.openscad

>> Subject: [OpenSCAD] printing a minus sign in RC3
>>
>> I'm trying to print columnar output of numbers in RC3.  I'm having a
>> problem
>> with minus signs because they aren't the same width as anything else, it
>> seems.   I'm wondering if this is the same result everyone gets, or if it
>> depends on my environment (like my font is misbehaving).   I'm using
>> Ubuntu.
>>
>> function str_join(list,sep="",_i=0, _result="") =
>>     _i >= len(list)-1 ? (_i==len(list) ? _result : str(_result,list[_i]))
>> :
>>     str_join(list,sep,_i+1,str(_result,list[_i],sep));
>>
>> function repeat(x,n) = [for(i=[1:1:n]) x];
>>
>> minus = chr(8722);
>> space_figure = chr(8199);
>>
>> echo(str_join(["X", each repeat("-",10), "X"]));    // Hyphen character,
>> too
>> short
>> echo(str_join(["X", each repeat(minus,10), "X"]));  // unicode minus
>> character
>> echo(str_join(["X", each repeat("0",10), "X"]));    // zero digit
>> echo(str_join(["X", each repeat("1",10), "X"]));    // one digit
>> echo(str_join(["X", each repeat(space_figure,10), "X"]));  // Figure
>> space
>> echo(str_join(["X", each repeat(" ",10), "X"]));    // Regular space
>> (wrong)
>>
>>
>> The output in my console:
>>
>> &lt;http://forum.openscad.org/file/t2477/screen.png&gt;
>>
>> I was expecting to see the line of minus signs the same with as the three
>> lines below with numbers and figure spaces.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> --
>> Sent from: http://forum.openscad.org/
>>
>> _______________________________________________
>> OpenSCAD mailing list
>>

> Discuss@.openscad

>> http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org
>
>
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