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From: Eric Cook <llua@gmx.com>
Newsgroups: gnu.bash.bug
Subject: Re: echo builtin doesn't handle end-of-options flag
Date: Sun, 16 Aug 2020 12:14:23 -0400
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On 8/16/20 11:47 AM, Todd A. Jacobs wrote:
> Configuration Information [Automatically generated, do not change]:
> Machine: x86_64
> OS: darwin19.5.0
> Compiler: clang
> Compilation CFLAGS: -DSSH_SOURCE_BASHRC -Wno-parentheses -Wno-format-sec=
urity
> uname output: Darwin titan.local 19.6.0 Darwin Kernel Version 19.6.0: Th=
u Jun 18 20:49:00 PDT 2020; root:xnu-6153.141.1~1/RELEASE_X86_64 x86_64
> Machine Type: x86_64-apple-darwin19.5.0
>
> Bash Version: 5.0
> Patch Level: 18
> Release Status: release
>
> Description:
>          The echo builtin accepts options, but does not seem to handle
>          `--` correctly as the end of options. The expected behavior
>          would be for -- to be removed, and any following flag-like
>          substrings printed as-is.
>
> Repeat-By:
>          echo "-n"         # "" but expecting "-n"
>          echo -- -n foo    # -- -n foo
>          echo -- "-n foo"  # -- -n foo
>
>


This is an intentional relic of the past, you really should use printf.