[ruby-core:98519] [CommonRuby Feature#8661] Add option to print backtrace in reverse order (stack frames first and error last)
From:
mame@...
Date:
2020-05-26 04:28:22 UTC
List:
ruby-core #98519
Issue #8661 has been updated by mame (Yusuke Endoh). Status changed from Assigned to Closed Committed at 39365b46e250162f278cb36aa148bc2a92b1b84a. Thanks! ---------------------------------------- Feature #8661: Add option to print backtrace in reverse order (stack frames first and error last) https://bugs.ruby-lang.org/issues/8661#change-85795 * Author: gary4gar (Gaurish Sharma) * Status: Closed * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) ---------------------------------------- Currently, the way ruby prints backtrace is that the error comes first and then the stack frames, like this: ``` Main Error Message stack frame 1 stack frame 2 stack frame 3 ..... ``` This is perfectly fine provided: 1. Backtraces are short, and fits in terminal, hence, there is no need to scroll. 2. You read it from top to bottom. But, I am a rails developer where 1. Backtraces are HUGE, therefore seldom fit in terminal, which means that a LOT of scrolling is needed every time I get an error. 2. In terminal, I tend to read backtraces from bottom to top, especially when tailing (tail -f) production logs. 3. I practice test-driven development, and spend most of my time scrolling to read backtraces, and ended up buying a larger display. Proposed Solution: Please add a way to configure backtraces to be printed in reverse order so that if I am reading from the bottom, say from the terminal, I can get to the main error message without scrolling, like this: ``` stack frame 3 stack frame 2 stack frame 1 Main Error Message ..... ``` This would save a lot of time because when the error message is printed at the bottom, there would be no need to scroll to read it. I am not sure if this can be done today. I tried overriding `Exception#backtrace`, but it caused a stack level too deep and illegal hardware instruction error. Attached is a comparison of how a backtrace currently looks like and how I want the option to make it look. ---Files-------------------------------- current.log (5.13 KB) proposed.log (4.9 KB) -- https://bugs.ruby-lang.org/ Unsubscribe: <mailto:[email protected]?subject=unsubscribe> <http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>