detect shell script language

[Lorenzo Bettini <bettini@dsi.unifi.it>]

Hi

I need to detect the actual programming language of a script.

A way of detecting it is to examine the first line searching for the 
"sha-bang" (#!), e.g.,

#!/bin/bash

or

#!/usr/bin/perl

However, there are cases where this is not enough, since the script, 
although it has #!/bin/sh is actually written (and interpreted) in 
another language, e.g., Tcl.

So my question is, is there another way of detecting the actual 
language?  I mean, another convention?

Another guy told me that a possible way is to use, on the second line a 
pattern like

-*- <interpreter> -*-

and I found some tcl scripts that look like this.

Is there a specific standard convention?

many thanks in advance
	Lorenzo

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|  Lorenzo Bettini          ICQ# lbetto, 16080134     |
|  PhD in Computer Science                            |
|  Dip. Sistemi e Informatica, Univ. di Firenze       |
|  Florence - Italy        (GNU/Linux User # 158233)  |
|  Home Page        : http://www.lorenzobettini.it    |
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|  http://www.lorenzobettini.it/software/doublecpp    |
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