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Trying to use only tabs for indenting c# files - csharp-mode error?
From: |
Guido Van Hoecke |
Subject: |
Trying to use only tabs for indenting c# files - csharp-mode error? |
Date: |
Sun, 8 Jan 2012 14:01:38 +0100 |
Hi,
Objective: use only tabs for indenting c# files
I start with an 'emacs -Q' session.
C-x C-f MyClass.cs
(This file has been created with MonoDevelop, and uses only tabs for
indentation, and - in MonoDevelop - the tab width is set to 4.)
As expected, MyClass.cs is shown in fundamental mode.
We want to see the whitespace, so
M-x whitespace-mode
This shows clearly that only tabs are used for indentation.
So lets load csharp-mode and select that mode:
M-x load-file csharp-mode.el
M-X csharp-mode
That removes the whitespace visualisation, so reactivate it:
M-x whitespace-mode
Tell emacs that it should use tabs for indenting:
M-x set-variable [enter] indent-tabs-mode [enter] t [enter]
Ultimately, I want the tab-width set to 4, but for now I just want to
leave or set it to 8:
M-x set-variable [enter] tab-width [enter] 8 [enter]
I will use following legend when showing file content:
# represents a leading tab
+ represents a leading empty space (following a preceding tab)
= represents a leading space character
Here's the source file:
namespace Application
{
#+++++++public class MyClass
#+++++++{
#+++++++#+++++++public MyClass ()
#+++++++#+++++++{
#+++++++#+++++++}
#+++++++}
}
Deleting the first tab changes it to:
namespace Application
{
=======public class MyClass
#+++++++{
#+++++++#+++++++public MyClass ()
#+++++++#+++++++{
#+++++++#+++++++}
#+++++++}
}
Hitting tab key while point is the 'public class' line changes it to:
namespace Application
{
==public class MyClass
#+++++++{
#+++++++#+++++++public MyClass ()
#+++++++#+++++++{
#+++++++#+++++++}
#+++++++}
}
I can't help but feeling that this is in error!
The tab-width is 8,
indent-tabs-mode is t
and still, it uses spaces to indent, and only two of them.
For the record, the emacs and csharp-mode versions:
GNU Emacs 23.3.1 (x86_64-apple-darwin, NS apple-appkit-1038.36)
of 2011-12-13 on bob.porkrind.org
;;; csharp-mode.el --- C# mode derived mode
;; Author : Dylan R. E. Moonfire (original)
;; Maintainer : Dino Chiesa <dpchiesa@hotmail.com>
;; Created : Feburary 2005
;; Modified : May 2011
;; Version : 0.8.6
;; Keywords : c# languages oop mode
;; X-URL : http://code.google.com/p/csharpmode/
;; Last-saved : <2011-May-21 20:28:30>
So one more test: insert a 'public string MyString' line
before the 'public Myclass()' line by positioning point after the second
{ and just typing:
namespace Application
{
==public class MyClass
#+++++++{
#+++++++==public string MyString;
#+++++++#+++++++public MyClass ()
#+++++++#+++++++{
#+++++++#+++++++}
#+++++++}
}
The leading tab is respected and replicated, but the new line is then
indented by two spaces rather than by an extra tab!?
And finally"
M-<
C-SPC
M->
<tab>
produces following result:
namespace Application
{
==public class MyClass
=={
====public string MyString;
====public MyClass ()
===={
====}
==}
}
So obviously neither tab-width nor indent-tabs-mode are obeyed nor
respected!
Please advise,
TIA,
Guido
--
If I had only known, I would have been a locksmith.
-- Albert Einstein
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- Trying to use only tabs for indenting c# files - csharp-mode error?,
Guido Van Hoecke <=