Module Name:	src
Committed By:	cube
Date:		Fri Sep 30 22:51:46 UTC 2005

Modified Files:
	src/usr.bin/config: gram.y sem.c sem.h

Log Message:
Introduce two new statements:

  no device at <attachment>

     <attachment> can take two forms:  either numbered/wildcarded, in which
     case only exactly matching instances will be removed, or plain (with
     no number or wildcard), in which case all matching instances will be
     removed.

     When <attachment> is a plain interface attribute, all instances using
     that attribute (either directly or through an explicit device) will be
     removed.

     E.g.:
             auich* at pci? dev ? function ?
             audio0 at audiobus?
             audio1 at auich?
             audio* at auich0

             no device at auich0     -> removes audio*
             no device at auich?     -> removes audio1
             no device at auich      -> removes audio1 _and_ audio*
             no device at audiobus?  -> removes audio0
             no device at audiobus   -> removes audio0, audio1 and audio*

  no <device>

     As in the previous case, <device> can either be numbered/starred, in
     which case all exactly matching instances are removed, or plain, in
     which case all instances of the device are removed.

    E.g.: (continuing previous example)

             no audio* -> removes 'audio* at auich0'
             no audio  -> removes all audio instances


To generate a diff of this commit:
cvs rdiff -r1.2 -r1.3 src/usr.bin/config/gram.y
cvs rdiff -r1.6 -r1.7 src/usr.bin/config/sem.c
cvs rdiff -r1.1 -r1.2 src/usr.bin/config/sem.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.