* Smart Indent [#t1c97e4a]

An indent or a reverse-indent is done according to corresponding "「｛, ｝". 
At present, it is prepared only for C/C++. 

A smart indent is invalid in the line comment and in the comment block.

- At Input "}"
It is adjusted to the same indent as "{" that corresponds. 

- At Input "{"
The same indent from "{" immediately before as "}" +1 indent and immediately before.

- At Input ":"
???????

- At Input "CRLF"
+1 indent from "(" immediately before, +1 indent from "{" immediately before.

The line (pre-processor) that starts by "#" becomes outside the object of a smart indent. 

It came to operate according to software TAB (Space is inserted instead of the tab) setting. (sakura:1.5.8.0 or later)

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