No messages in output when using an array of strings as exclude in config file

[Frederick888]

What happened:
I created config file with:

exclude: ["abcd"]

Then when I run stern, it just prints out a bunch of pod & container names without messages.

If I change the exclude option to a string, it then started to work normally, i.e.

exclude: "abcd"

(I actually want to add more than one exclude filter to my config file.)

What you expected to happen:
It filters out lines containing abcd.

How to reproduce it (as minimally and precisely as possible):

1. Create a config file with an array of strings as exclude
2. Run stern

Anything else we need to know?:

Environment:

• stern version (use stern --version): 1.29.0
• OS (e.g: cat /etc/os-release): macOS 14.4.1
• Install tools (e.g: Homebrew): Homebrew
• Others: N/A

[tksm]

Hi,

Thank you for reporting the issue.
I confirmed that Stern does not handle the exclude key in the config file properly if the value is an array as follows.

echo 'exclude: ["abcd"]' > /tmp/stern.config
STERNCONFIG=/tmp/stern.config stern --stdin -o raw <<EOF
abcd
a
b
c
d
e
f
xa
xb
xc
xd
xe
xf
EOF

In this case, Stern seems to wrongfully exclude lines that contain a, b, c, and d, even though it expects to exclude only lines with abcd.

e
f
xe
xf