Re: Bug in LocateLineMatching?

[Alexander Mattausch]

Harald Hannelius schrieb:

> The docs say that LocateLineMatching should move the current-position
> pointer to the start of the line matching the quoted regular expression.
>
> However, this command;
>
> { /etc/lilo.conf
>                LocateLineMatching "image = /boot/2.4.19"
>                BeginGroupIfNoLineContaining "# 3 Feb 03"
>                        InsertLine "# 3 Feb 03"
>                        InsertLine "image = /boot/2.4.20/bzImage"
>                        InsertLine "  label = 2.4.20"
>                        InsertLine '  append = "video=matrox:vesa:0x1BB"'
>                        InsertLine ''
>                EndGroup
>        }
I would do it this way:

{ /etc/lilo.conf

 BeginGroupIfNoLineContaining "# 3 Feb 03"
   LocateLineMatching "image = /boot/2.4.19"
   IncrementPointer "-1"
   InsertLine "# 3 Feb 03"
   InsertLine "image = /boot/2.4.20/bzImage"
   InsertLine "  label = 2.4.20"
   InsertLine '  append = "video=matrox:vesa:0x1BB"'
   InsertLine ''
 EndGroup

}

If you want to insert _before_ a line, you need the command 
IncrementPointer "-1". If you want to replace a line, e.g with 
ReplaceLineWith, you don't need it. This is just

LocateLineMatching "RegEx"
ReplaceLineWith "bla bla"

Regards,
Alex