Yeah that's been a major pain in my ass more than once, totally get where you're coming from there. One tip for you, and anyone else who might be reading this f

Yeah that's been a major pain in my ass more than once, totally get where you're coming from there. One tip for you, and anyone else who might be reading this from the future (hi! do we have flying cars yet? what about time machines? can you bring me one of each, in like, 10 minutes?): RubyMine, the IDE from JetBrains (commercial, Java-based desktop app but not nearly as bad/sluggish as you might expect, though not native fluidity) has a feature to show you where a given method ultimately comes from, going all the way up the chain of source code and abstractions to where it's really defined, including within Rails or other libraries/gems/imported files in a given project. It's a really killer feature for this particular pain point, in my opinion. Short of that, assuming all your dependencies are unpacked under your project's directory (likely .gitignore'd but there nonetheless, instead of in somewhere like /opt/ or /usr/local/lib or something) you could also `grep -ir 'def method_name' | less` or something to try to figure that out, though it's nowhere near as smooth as RubyMine. Other editors have Ruby and/or Rails plugins that may help ease this pain point as well, though personally I haven't done anything with that on the editor front in a very, very long time. Generally I'm outright militant about keeping my dependencies to an absolute minimum in a project, and doing everything the most "vanilla" (standard, accepted, most widely adopted patterns, naming conventions, etc.) way possible, and therefore I usually know what gem/lib is providing what particular method, so I don't really need that kind of utility most of the time because I can google up some API docs...when there are API docs anyway. But in cases where you're having a legacy project/monolith dropped in your lap and nobody knows anything because "the business guy" fired the one developer who actually knew how everything worked and now that guy won't answer his calls because working for free is dumb? Yeah, in those cases, RubyMine or a real good editor plugin can be a lifesaver for this.