Tabs cannot be unexpanded

[GoogleCodeExporter]

What steps will reproduce the problem?
1.  Change "editor.tabs.expand=true" to false in preferences.

What is the expected output? What do you see instead?

Indentation and tabs should remain as tabs in the code.  Instead, the tab key 
no longer functions, and indents are still converted to spaces.

What version of the Arduino software are you using? On what operating
system?  Which Arduino board are you using?

Software version 0021, Windows XP SP2.  Uno board.

Original issue reported on code.google.com by saberbat...@gmail.com on 11 Dec 2010 at 2:51

[GoogleCodeExporter]

Yep. This defect is annoying.

Original comment by jonat...@feucht.us on 25 Feb 2012 at 10:18

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Dear developers, please have a look at this annoying defect. Thank you.

Original comment by aba...@gmail.com on 9 Jan 2013 at 4:54

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Same here, if I change the setting to false, then Tab key doesn't work at all.
just like the tab key is broken.

Original comment by callther...@gmail.com on 26 Sep 2013 at 12:57

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For me, the tab key still works, but the tabs are also still expanded to spaces.

Original comment by wlind...@gmail.com on 20 Jan 2014 at 11:51

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Open source does not mean forcing your indentation style onto me. Please 
support tabs in the Arduino editor.

Original comment by erap...@gmail.com on 23 Feb 2014 at 11:05

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  On Windows 7 64-bit
with Arduino IDE 1.0.5-r2
 AND Arduino IDE 1.5.6-r2
I am experiencing the described behaviour which is very annoying.

Original comment by weredi...@gmail.com on 12 Jun 2014 at 10:13

[GoogleCodeExporter]

Changing "editor.tabs.expand=true" to false in preferences has the undesired 
effect of breaking the tab key.

Seriously? Tabs are important, right up their with curly braces and numbers, 
and you guys let this remain broken for nearly 4 years? WTF?

Original comment by kirkmor...@gmail.com on 26 Jul 2014 at 3:56

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This is nuts. Now I'm going to be setting up an external editor, just to deal 
with this extremely annoying problem, which is probably an EXTREMELY simple 
fix. I might even poke around in the Arduino Github to see if it's a fix I have 
time to implement...

Original comment by maxrows...@gmail.com on 1 Nov 2014 at 7:35

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Really? I've found records of this issue dating back to 2010. How long does it 
take to fix something like this? Jeez..

Original comment by andrewgi...@gmail.com on 23 Dec 2014 at 3:31