Revert the removal of UTF-8 force encoding in JSON loading #738
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
I think the removal of the force encoding in rails#719 was a mistake. For example, my shell prompt includes multi-byte UTF-8 characters, and when `Spring::Client::Run#run_command` collects the environment variables using `ENV.to_hash`, the resulting JSON string becomes ASCII-8BIT. This causes issues when the `Spring::Application#serve` tries to load the JSON string and passes it to `JSON.load`. Since `OkJson` expects UTF-8 encoded strings, it raises an error when it encounters the ASCII-8BIT string. I've added a test case that replicates this issue to ensure that the encoding is handled correctly. The test case creates a JSON string with multi-byte UTF-8 characters as an ASCII-8BIT string and verifies that it can be loaded without raising an error.
paracycle force-pushed the uk-fix-string-encoding branch from 08a7d9e to 303bff7 Compare 
This was referenced Jul 21, 2025
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit. This suggestion is invalid because no changes were made to the code. Suggestions cannot be applied while the pull request is closed. Suggestions cannot be applied while viewing a subset of changes. Only one suggestion per line can be applied in a batch. Add this suggestion to a batch that can be applied as a single commit. Applying suggestions on deleted lines is not supported. You must change the existing code in this line in order to create a valid suggestion. Outdated suggestions cannot be applied. This suggestion has been applied or marked resolved. Suggestions cannot be applied from pending reviews. Suggestions cannot be applied on multi-line comments. Suggestions cannot be applied while the pull request is queued to merge. Suggestion cannot be applied right now. Please check back later.
I think the removal of the force encoding in #719 was a mistake. For example, my shell prompt includes multi-byte UTF-8 characters, and when
Spring::Client::Run#run_commandcollects the environment variables usingENV.to_hash, the resulting JSON string becomes ASCII-8BIT. This causes issues when theSpring::Application#servetries to load the JSON string and passes it toJSON.load. SinceOkJsonexpects UTF-8 encoded strings, it raises an error when it encounters the ASCII-8BIT string.I've added a test case that replicates this issue to ensure that the encoding is handled correctly. The test case creates a JSON string with multi-byte UTF-8 characters as an ASCII-8BIT string and verifies that it can be loaded without raising an error.