Re^2: Perl Debugger: setting a breakpoint in another file with 'b'

no book needed :)

lanx@lanx-1005HA:~$ perl -de0

Loading DB routines from perl5db.pl version 1.33
Editor support available.

Enter h or `h h' for help, or `man perldebug' for more help.

main::(-e:1):    0
  DB<1> h b
b        Sets breakpoint on current line)
b [line] [condition]
        Set breakpoint; line defaults to the current execution line;
        condition breaks if it evaluates to true, defaults to '1'.
b subname [condition]
        Set breakpoint at first line of subroutine.
b $var        Set breakpoint at first line of subroutine referenced by
+ $var.
b load filename Set breakpoint on 'require'ing the given file.
b postpone subname [condition]
        Set breakpoint at first line of subroutine after 
        it is compiled.
b compile subname
        Stop after the subroutine is compiled.
  DB<2>
[download]

see also perldebug

Cheers Rolf
_{(addicted to the Perl Programming Language and ☆☆☆☆ :)

Je suis Charlie!}

Comment on Re^2: Perl Debugger: setting a breakpoint in another file with 'b' Download Code

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Re^3: Perl Debugger: setting a breakpoint in another file with 'b' by Dumu (Monk) on May 18, 2015 at 13:53 UTC
Incidentally, I realised last night that you can even start a Perl debugger REPL using a divide by zero: `perl -de1/0` [download] And it still works (i.e. starts the debugger and puts you into a "Perl shell"), although you do get an 'Illegal division by zero' error if you then execute any of the 'stepping' commands. So I wonder if there is anything you can put after `perl -de` that won't let the debugger start?	[reply] [d/l] [select]
Re^3: Perl Debugger: setting a breakpoint in another file with 'b' by Dumu (Monk) on May 18, 2015 at 13:49 UTC
Danke sehr, Rolf... I had not tried '`b postpone`', only '`b compile`' and '`b load`', which hadn't apparently worked. I shall try '`b postpone`'! It was staring me in the face the whole time.	[reply] [d/l] [select]