Hi Monks,

I'm trying to comment a block that match a keyword "TIMINGCHECK".
The block is always bracketed by `()'. In the begining, I thought this should be easy. But finally, I was beaten.

I've tried to read and deal with the data line-by-line. Soon, I found it would very hard to know the size of TIMINGCHECK block if I deal with the data line-by-line.

So, I turned to slurp the whole data and try to identify the range of TIMINGCHECK block by using Text::Balanced module. Actually, I'm in the middle of learning how to use Text::Balanced. However, I found another problem. Text::Balanced seems can only help me extract the range I want into a scalar but after I comment it by using like bellow statement,

$extracted_range =~ s/^/\/\//mg;

how could I insert it back to the location where I extracted it out. If I finally find out a way to insert it back, Is this procedure efficiency? I have lot of TIMINGCHECK block need to be commented in the data file. Bellow procedure doesn't look elegant.
find the block -> extract -> insert back -> find next block -> extract...

I thought I should not work on my problem in a good perl way. Could any monk give me some suggestions or hints to deal with this kind of problem?
Thanks in advance!
York 
Original data
=============
...
(CELL
  ...
  (TIMINGCHECK
    ....
    ....
  )
)
(CELL
 (CELLTYPE "SEDFQD1")
 (INSTANCE uTrigger/TrcInclCtrlReg_reg[13])
 (DELAY
 (ABSOLUTE
  (IOPATH CP Q (0.10:0.15:0.25)(0.09:0.15:0.24))
 )
 )
 (TIMINGCHECK
  (SETUP (posedge SI) (posedge CP) (0.14:0.23:0.41))
  (SETUP (negedge SI) (posedge CP) (0.09:0.16:0.30))
  ....(random lines)
  (HOLD (negedge SI) (posedge CP) (0.00:0.00:0.00))
  (HOLD (negedge D) (posedge CP) (0.00:0.00:0.00))
 )
)


What I hope it become
========================
...
(CELL
  ...
//  (TIMINGCHECK
//    ....
//    ....
//  )
)
(CELL
 (CELLTYPE "SEDFQD1")
 (INSTANCE uTrigger/TrcInclCtrlReg_reg[13])
 (DELAY
 (ABSOLUTE
  (IOPATH CP Q (0.10:0.15:0.25)(0.09:0.15:0.24))
 )
 )
// (TIMINGCHECK
//  (SETUP (posedge SI) (posedge CP) (0.14:0.23:0.41))
//  (SETUP (negedge SI) (posedge CP) (0.09:0.16:0.30))
//  ....(random lines)
//  (HOLD (negedge SI) (posedge CP) (0.00:0.00:0.00))
//  (HOLD (negedge D) (posedge CP) (0.00:0.00:0.00))
// )
)

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In reply to Comment a block that match a keyword by yorkwu

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