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Showing content from https://docs.ruby-lang.org/en/3.4/RubyVM/../Thread/Backtrace/../../Thread/Backtrace.html below:

class Thread::Backtrace - Documentation for Ruby 3.4

static VALUE
backtrace_limit(VALUE self)
{
    return LONG2NUM(rb_backtrace_length_limit);
}

Returns maximum backtrace length set by --backtrace-limit command-line option. The default is -1 which means unlimited backtraces. If the value is zero or positive, the error backtraces, produced by Exception#full_message, are abbreviated and the extra lines are replaced by ... 3 levels...

$ ruby -r net/http -e "p Thread::Backtrace.limit; Net::HTTP.get(URI('http://wrong.address'))"
- 1
.../lib/ruby/3.1.0/socket.rb:227:in `getaddrinfo': Failed to open TCP connection to wrong.address:80 (getaddrinfo: Name or service not known) (SocketError)
    from .../lib/ruby/3.1.0/socket.rb:227:in `foreach'
    from .../lib/ruby/3.1.0/socket.rb:632:in `tcp'
    from .../lib/ruby/3.1.0/net/http.rb:998:in `connect'
    from .../lib/ruby/3.1.0/net/http.rb:976:in `do_start'
    from .../lib/ruby/3.1.0/net/http.rb:965:in `start'
    from .../lib/ruby/3.1.0/net/http.rb:627:in `start'
    from .../lib/ruby/3.1.0/net/http.rb:503:in `get_response'
    from .../lib/ruby/3.1.0/net/http.rb:474:in `get'
.../lib/ruby/3.1.0/socket.rb:227:in `getaddrinfo': getaddrinfo: Name or service not known (SocketError)
    from .../lib/ruby/3.1.0/socket.rb:227:in `foreach'
    from .../lib/ruby/3.1.0/socket.rb:632:in `tcp'
    from .../lib/ruby/3.1.0/net/http.rb:998:in `connect'
    from .../lib/ruby/3.1.0/net/http.rb:976:in `do_start'
    from .../lib/ruby/3.1.0/net/http.rb:965:in `start'
    from .../lib/ruby/3.1.0/net/http.rb:627:in `start'
    from .../lib/ruby/3.1.0/net/http.rb:503:in `get_response'
    from .../lib/ruby/3.1.0/net/http.rb:474:in `get'
    from -e:1:in `<main>'

$ ruby --backtrace-limit 2 -r net/http -e "p Thread::Backtrace.limit; Net::HTTP.get(URI('http://wrong.address'))"
2
.../lib/ruby/3.1.0/socket.rb:227:in `getaddrinfo': Failed to open TCP connection to wrong.address:80 (getaddrinfo: Name or service not known) (SocketError)
    from .../lib/ruby/3.1.0/socket.rb:227:in `foreach'
    from .../lib/ruby/3.1.0/socket.rb:632:in `tcp'
     ... 7 levels...
.../lib/ruby/3.1.0/socket.rb:227:in `getaddrinfo': getaddrinfo: Name or service not known (SocketError)
    from .../lib/ruby/3.1.0/socket.rb:227:in `foreach'
    from .../lib/ruby/3.1.0/socket.rb:632:in `tcp'
     ... 7 levels...

$ ruby --backtrace-limit 0 -r net/http -e "p Thread::Backtrace.limit; Net::HTTP.get(URI('http://wrong.address'))"
0
.../lib/ruby/3.1.0/socket.rb:227:in `getaddrinfo': Failed to open TCP connection to wrong.address:80 (getaddrinfo: Name or service not known) (SocketError)
     ... 9 levels...
.../lib/ruby/3.1.0/socket.rb:227:in `getaddrinfo': getaddrinfo: Name or service not known (SocketError)
     ... 9 levels...

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