local_variables sometimes lies

[hx]

I use the IntelliJ/RubyMine debugger, which occasionally trips on this line. The gist is here:

locals = eval("local_variables", binding)
locals.each {|local| result[local.to_s] = eval(local.to_s, binding)}

The local_variables method is reporting some variable names (in my case, m), which, when evaled, raises uncaught errors that crash the debugger.

I'm thinking, at the very least:

locals.each {|local| result[local.to_s] = eval(local.to_s, binding) rescue :ghost}

Then, in our debuggers' lists of locals, it'd be clear that the variable did or should exist, but doesn't. Also, we could still debug stuff.

Thoughts, anybody?

[os97673]

Looks like a reasonable approach to avoid the critical problem.
PR is welcome ;)

[hx]

@os97673 I just saw this. It's on my todo list now ;)

[os97673]

I believe the problem has been fixed, feel free to reopen if it is not.