Shellcheck can warn for the usage of escape-characters in echo-commands. The used regex did not account for all end-of-line characters, missing out potential warnings. The fix is to expand the regex.
[ { "endline": 486, "file": "./src/ShellCheck/Checks/Commands.hs", "function": "checkUnusedEchoEscapes", "module": "ShellCheck.Checks.Commands", "startline": 486 } ]
[ { "endline": 493, "file": "./src/ShellCheck/Checks/Commands.hs", "function": "checkUnusedEchoEscapes", "module": "ShellCheck.Checks.Commands", "startline": 493 } ]