apps/nshlib/README.txt:   Trivial correction in comparison to Bash behavior.
@@ -537,7 +537,7 @@ o export <name> [<value>]
NOTE: This behavior differs from the Bash shell. Bash will retain the
local Bash variable which will shadow the environment variable of the
- same name.
+ same name and same value.
2. Using 'export' to set an environment variable
@@ -1132,9 +1132,8 @@ o set [{+|-}{e|x|xe|ex}] [<name> <value>]
variable rather than the local NSH variable.
NOTE: The Bash shell does not work this way. Bash would set the value of
- the local Bash variable and would not modify the environment variable.
- The local Bash variable would that then shadow the environment variable
- with a differing value.
+ both the local Bash variable and of the environment variable of the same
+ name to the same value.
If CONFIG_NSH_VARS is selected and no arguments are provided, then the
'set' command will list all list all NSH variables.
