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Reapply r375051: [support] GlobPattern: add support for `\` and `[!...]`, and…

Authored by rupprecht on Oct 17 2019, 11:09 AM.

Description

Reapply r375051: [support] GlobPattern: add support for \ and [!...], and allow ] in more places

Reland r375051 (reverted in r375052) after fixing lld tests on Windows in r375126 and r375131.

Original description: Update GlobPattern in libSupport to handle a few more cases. It does not fully match the fnmatch used by GNU objcopy since named character classes (e.g. [[:digit:]]) are not supported, but this should support most existing use cases (mostly just * is what's used anyway).

This will be used to implement the --wildcard flag in llvm-objcopy to be more compatible with GNU objcopy.

This is split off of D66613 to land the libSupport changes separately. The llvm-objcopy part will land soon.

Reviewers: jhenderson, MaskRay, evgeny777, espindola, alexshap

Reviewed By: MaskRay

Subscribers: nickdesaulniers, emaste, arichardson, hiraditya, jakehehrlich, abrachet, seiya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66613

llvm-svn: 375149

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