[Bug binutils/27594] build processes broken by changed space handling

[eliz at gnu dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27594

--- Comment #13 from Eli Zaretskii <eliz at gnu dot org> ---
I think I see what caused the breakage of the MSYS2 build script.  It wasn't
the change in `quot`, it was a previous commit 21c33bc, which attempted to fix
PR 26865.  The change in that commit encloses the --preprocessor argument in
double quotes if it includes whitespace.  Which is correct if the argument is a
single file, as it should be.  But if it is used to pass a complete
preprocessor shell command, and the scripts which used that loophole were
working around the invalid usage by pre-quoting the argument, then indeed those
scripts will break.

So bottom line: the revert reverted the wrong commit.

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