[all-commits] [llvm/llvm-project] b9123f: [Support] Remove cl::Grouping (#224958)

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b9123f788eb3e62c5cf18fd7d7b093dd3206b60d
      https://github.com/llvm/llvm-project/commit/b9123f788eb3e62c5cf18fd7d7b093dd3206b60d
  Author: Fangrui Song <i at maskray.me>
  Date:   2026-09-24 (Thu, 24 Sep 2026)

  Changed paths:
    M llvm/docs/CommandLine.md
    M llvm/include/llvm/Support/CommandLine.h
    M llvm/lib/Support/CommandLine.cpp
    M llvm/unittests/Support/CommandLineTest.cpp

  Log Message:
  -----------
  [Support] Remove cl::Grouping (#224958)

This feature emulates POSIX's grouped short options in a non-perfect
way. https://reviews.llvm.org/D61270 made every single-character
cl::option implicitly group, leading to weird error message for `opt
-foo=bar`: `opt: for the -o option: may not occur within a group!`

Every tool (primarily binutils-style tools) has since migrated to
OptTable,
with llvm-cov gcov the last (#224955).

Delete this feature, which would block TableGen based representation.

LLM-aided



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