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From: Lutz Adam <lutz.adam@posteo.de>
Newsgroups: gnu.bash.bug
Subject: Error expanding variable containing a directory name
Date: Thu, 23 Jul 2020 18:08:10 +0200
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Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -g -O2 
-fdebug-prefix-map=/build/bash-a6qmCk/bash-5.0=. 
-fstack-protector-strong -Wformat -Werror=format-
uname output: Linux fractal 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 
00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu

Bash Version: 5.0
Patch Level: 17
Release Status: release

Description:
        The content of $ML is "/media/lad".  There's a directory 
/media/lad/p24. Typing the command
             ls $ML/p24<TAB-key>
        a backslash is put befor "$" and the line looks like:
             ls \$ML/p24/
        Typing the ENTER key shows:
             ls: cannot access '$ML/p24/': No such file or directory.

Repeat-By:
         Create a variable containing a directory name. Put a 
subdirectory there under.
         Type a "$" and the variable followed by a slash, the name of 
the subdirectora and the TAB-key.


The OS is Linux Mint 20