From: Jorge Domenico Bucaran Romano <jbucaran@...>
Date: 2007-05-25T11:37:40+09:00
Subject: Re: Ruby - Debugging

Tomas Pospisek's Mailing Lists wrote:
> On Fri, 25 May 2007, How do I use the ruby default debugger? wrote:
> 
>> How do I use the ruby default debugger?
> 
> $ ruby -rdebug /tmp/some_ruby_program.rb
> Debug.rb
> Emacs support available.
> 
> /tmp/k.rb:1:puts "a"
> (rdb:1) help
> Debugger help v.-0.002b
> Commands
>    b[reak] [file:|class:]<line|method>
>    b[reak] [class.]<line|method>
>                               set breakpoint to some position
>    wat[ch] <expression>       set watchpoint to some expression
>    cat[ch] (<exception>|off)  set catchpoint to an exception
>    b[reak]                    list breakpoints
>    cat[ch]                    show catchpoint
>    del[ete][ nnn]             delete some or all breakpoints
>    disp[lay] <expression>     add expression into display expression 
> list
>    undisp[lay][ nnn]          delete one particular or all display 
> expressions
>    c[ont]                     run until program ends or hit breakpoint
>    s[tep][ nnn]               step (into methods) one line or till line 
> nnn
>    n[ext][ nnn]               go over one line or till line nnn
>    w[here]                    display frames
>    f[rame]                    alias for where
>    l[ist][ (-|nn-mm)]         list program, - lists backwards
>                               nn-mm lists given lines
>    up[ nn]                    move to higher frame
>    down[ nn]                  move to lower frame
>    fin[ish]                   return to outer frame
>    tr[ace] (on|off)           set trace mode of current thread
>    tr[ace] (on|off) all       set trace mode of all threads
>    q[uit]                     exit from debugger
>    v[ar] g[lobal]             show global variables
>    v[ar] l[ocal]              show local variables
>    v[ar] i[nstance] <object>  show instance variables of object
>    v[ar] c[onst] <object>     show constants of object
>    m[ethod] i[nstance] <obj>  show methods of object
>    m[ethod] <class|module>    show instance methods of class or module
>    th[read] l[ist]            list all threads
>    th[read] c[ur[rent]]       show current thread
>    th[read] [sw[itch]] <nnn>  switch thread context to nnn
>    th[read] stop <nnn>        stop thread nnn
>    th[read] resume <nnn>      resume thread nnn
>    p expression               evaluate expression and print its value
>    h[elp]                     print this help
>    <everything else>          evaluate
> (rdb:1)
> 
> --

Look what happened when I did just that:


C:\Users\jbucaran>ruby -rdebug
c:\users\jbucaran\desktop\demo2.rb
Debug.rb
Emacs support available.

C:/Program Files/Ruby/lib/ruby/site_ruby/1.8/ubygems.rb:10:require 
'rubygems'
(rdb:1)

Help me I am clueless!

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