2023-01-11 v4.1.3:
Fixes for the test suite only to avoid bugs in old (before 2014) bash versions < 4.4, such as Oracle Linux 7.5 or CentOS 7 or Debian 7 (wheezy) or Ubuntu 13.10 (saucy)
The cgibashopts actual code is unchanged, no need to upgrade unless for passing the test suite on legacy systems.
The test that failed was when Microsoft Edge browsers mistakenly sent binary windows files as text files on upload. cgibashopts handles correctly this weird case that should not happen in real life (the test file was designed to trick these browsers by inserting carriage returns in weird places in a text file), except on system with a bash older than 4.4.