ruby / ruby/stringio

Breaking Change in v3.0.9

Open
#78 2 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
Java
Stars
63
Forks
42
Avg merge
20h 32m
Merged PRs (30d)
3

Description

I've traced back a breaking change to v3.0.9. Here's the minimal repro:

str = "\xFE\xFFColumn1,Column2\n" + "\"value1.1\",value1.2\n"
io = StringIO.new(str)
io.gets *["\n", 8192]

In v3.0.8:

io.gets *["\n", 8192]
#=>  "\xFE\xFFColumn1,Column2\n"

In v3.0.9:

     ArgumentError:
       encoding mismatch: UTF-16BE IO with UTF-8 RS

I suspect there's some kind of action for me, but this error message is a bit opaque (i.e. what is RS?).

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the minimal StringIO#gets reproduction in the issue and compare its behavior between v3.0.8 and v3.0.9, focusing on the UTF-16BE input and UTF-8 record separator. Determine whether the regression or the opaque encoding-mismatch message is the intended target; done means the reported behavior is resolved or the error explains the required action clearly.

Written by the indexing model from the issue text.

Assessment

Tech stack
ruby
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.