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[BUG] Additions to the OperatorTable don't appear to be registering correctly

bugSomething isn't working as intendedSomething isn't working as intended

criticalCrashes, data loss, or fundamentally broken behaviorCrashes, data loss, or fundamentally broken behavior

parserLexer, parser, operator shufflingLexer, parser, operator shuffling

Status: Open.

#494 In IoLanguage/io;

· cbrazinski opened on Apr 19, 2026

[BUG] Error in acos

bugSomething isn't working as intendedSomething isn't working as intended

good first issueApproachable for new contributorsApproachable for new contributors

stdlibIo-level standard libraryIo-level standard library

Status: Open.

#489 In IoLanguage/io;

· rgizz opened on Mar 9, 2026

How cancel a message in Io's REPL without leaving the REPL?

questionSupport request or usage questionSupport request or usage question

replREPL / CLI behaviorREPL / CLI behavior

Status: Open.

#441 In IoLanguage/io;

· halloleo opened on Nov 19, 2020

Unexpected behavior of Object doMessage

bugSomething isn't working as intendedSomething isn't working as intended

criticalCrashes, data loss, or fundamentally broken behaviorCrashes, data loss, or fundamentally broken behavior

duplicateAlready tracked elsewhereAlready tracked elsewhere

parserLexer, parser, operator shufflingLexer, parser, operator shuffling

Status: Open.

#438 In IoLanguage/io;

· ales-tsurko opened on Oct 12, 2020

Io implementation in Rust

discussionDesign or policy conversationDesign or policy conversation

enhancementNew feature or capabilityNew feature or capability

Status: Open.

#434 In IoLanguage/io;

· ales-tsurko opened on Sep 11, 2020

can not get stdout when io is running

bugSomething isn't working as intendedSomething isn't working as intended

needs reproNeeds reproduction on current codeNeeds reproduction on current code

Status: Open.

#431 In IoLanguage/io;

· wsdjeg opened on Sep 22, 2019

Is there a websocket client ?

addon-requestRequest for a new addon/bindingRequest for a new addon/binding

Status: Open.

#426 In IoLanguage/io;

· TheOnlyArtz opened on Nov 18, 2018

Rust Bindings

addon-requestRequest for a new addon/bindingRequest for a new addon/binding

Status: Open.

#423 In IoLanguage/io;

· Immortalin opened on Oct 20, 2018

No updated information on how to install/enable Io addons

docsDocumentation or tutorial issueDocumentation or tutorial issue

enhancementNew feature or capabilityNew feature or capability

Status: Open.

#414 In IoLanguage/io;

· DataKinds opened on Jul 5, 2018

[Feature request] libreadline

enhancementNew feature or capabilityNew feature or capability

replREPL / CLI behaviorREPL / CLI behavior

Status: Open.

#407 In IoLanguage/io;

· yangfl opened on May 29, 2018

Proposition: switching to semantic versioning

discussionDesign or policy conversationDesign or policy conversation

Status: Open.

#404 In IoLanguage/io;

· ales-tsurko opened on Apr 13, 2018

Allow assign operators to work for arbitrary messages on the left side

discussionDesign or policy conversationDesign or policy conversation

enhancementNew feature or capabilityNew feature or capability

parserLexer, parser, operator shufflingLexer, parser, operator shuffling

Status: Open.

#395 In IoLanguage/io;

· piotrklibert opened on Feb 13, 2018