notes: decide to follow regular bash behaviour, not POSIX

NOTES.md

@@ -2,7 +2,9 @@
 
 cf. [Bash Reference Manual](https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html)
 
-Comparative testing with bash should be done with bash --norc --posix.
+Comparative testing with bash should be done with bash --norc.
+
+In case of difference between regular bash and posix bash, we decide to follow regular bash.
 
 ## Ideas for testing
 * use prysk or shellspec with shell=./minishell
@@ -339,27 +341,16 @@ The word following the redirection operator, unless otherwise noted, is
 subjected to parameter expansion, filename expansion, word splitting, and
 quote removal.
 
-If it expands to more than one word, Bash reports an error, except when in posix
-mode.
-TODO: decide if we follow posix default or bash default
-
-Note: This behaviour change is, as far as I can tell, not documented in the Bash
-Reference Manual.
+If it expands to more than one word, Bash reports an error.
 
+This is the correct behaviour:
 ```shell
-# bash behaviour
 bash-5.1$ var="file1 file2"
 bash-5.1$ echo "hello world" > $var
 bash: $var: ambiguous redirect
-# posix behaviour
-bash-5.1$ var="file1 file2"
-bash-5.1$ echo "hello world" > $var
-bash-5.1$ cat "$var"
-hello world
 ```
 
-In bash mode and in posix mode, if the variable is not defined, bash prints the
-following error:
+If the variable is not defined, bash prints the following error:
 
 ```shell
 bash-5.1$ echo "hello world" > $nonexist