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[clang-format][PR41899] PointerAlignment: Left leads to useless space in lambda…

Description

[clang-format][PR41899] PointerAlignment: Left leads to useless space in lambda intializer expression

Summary:
https://bugs.llvm.org/show_bug.cgi?id=41899

auto lambda = [&a = a]() { a = 2; };

is formatted as

auto lambda = [& a = a]() { a = 2; };

With an extra space if PointerAlignment is set to Left

The space "& a" looks strange when there is no type in the lambda's intializer expression. This can be worked around with by setting "PointerAlignment: Right", but ideally "PointerAlignment: Left" would not add a space in this case.

Reviewers: klimek, owenpan, krasimir, timwoj

Reviewed By: klimek

Subscribers: cfe-commits

Tags: #clang-tools-extra, #clang

Differential Revision: https://reviews.llvm.org/D67718