problem with longoptions

[David Relson]

On Sun, 27 Mar 2005 13:26:26 -0800
.rp wrote:

> On 15 Mar 2005 at 23:43, David Relson wrote:
> 
> > ######## Test Script #######
> > 
> > #!/bin/sh
> > 
> > cat >0315.cf <<EOF
> > block_on_subnets  = No
> > charset_default   = us-ascii
> > replace_nonascii_characters = No
> > no-header-tags    = Yes
> > stats_in_header   = Yes
> > report-unsure     = No
> > thresh_update     = 0.000000
> > timestamp         = Yes
> > timestamp-date    = 20040822
> > EOF
> > 
> 
> put this in the category of 'just wondering' , but is there a grammer rule as 
> to when to use "-" and when to use "_" ?
> 
> ps:it seems to me that it is much safer to use "_" to avoid any possibility 
> that the compilier will think you are doing math on variables.

Actually, there is a rule (though the above test script doesn't follow it):

In the config file, use underscores.  
On the command line use hyphens.

The two facilities (config file options and command line options)
evolved in parallel and the difference in convention wasn't noticed
until longoptions started being used.

HTH,

David


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