On Mon, 17 May 2010, Chet Ramey wrote:
On 4/15/10 11:56 PM, DennisW wrote:
Mapfile would be that much more powerful if the callback function had
access to the current line. Is there any chance this might be added in
the future?
Sure, there's a chance. What would be the most useful form? A shell
variable that lives for the duration of the execution of the callback
function?
[A somewhat belated reply!]
It appears that the assignment is made after the function is called
rather than before. I would like the value passed to the callback
function to be the index of the line just read (and already
assigned to the array).
IOW, this script would print the file:
xx()
{
printf "%3d %s\n" "$1" "${l[$1]}"
}
mapfile -c1 -C xx -t l < ~/.bashrc
Now, "${l[$1]}" is empty; it would be great if it contained the line
just read.
--
Chris F.A. Johnson, <http://cfajohnson.com/>
Author:
Pro Bash Programming: Scripting the GNU/Linux Shell (2009, Apress)
Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress)
