Thank you Eily for looking and understanding the issue.

Yes the three assumptions you mentioned are accurate. I am trying a simple solution "read a line, don't print it when conditions are met" won't work with my new requirement, as "timing(" occurs after the line I want to delete. I'll have to rewrite the code to read one whole " pin(..) { ... }" section in, decide which lines to delete and then dump it to the output. As I have several block-type statements I will either need to count the open brackets or write a real parser for the given syntax. And This is getting complex

I am using the code, but every time I am getting the issue "timing event not found", what is wrong here? 

 perl -0777 -ne ' s/(pin\s*\(".+?"?\)\s+\{.+?\})/$x=$1;if($x=~m!timing
+\s*\(\)! and $x=~m!direction : output!){$x=~s!^\s*max_transition.+?\n
+!!mg};$x/gse ; print ' <INPUT_FILE>

[download]

In reply to Re^2: Need to save a single line from delete on some special condition by anirbanphys
in thread Need to save a single line from delete on some special condition by anirbanphys

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.