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@@ -684,6 +684,30 @@ methods behave: This value can be set to ";" to have the query form `key=value` pairs delimited by ";" instead of "&" which is the default. +# ENVIRONMENT VARIABLES + +- URI\_HAS\_RESERVED\_SQUARE\_BRACKETS + + Before version 5.11, URI treated square brackets as reserved characters + throughout the whole URI string. However, these brackets are reserved + only within the authority/host part of the URI and nowhere else (RFC 3986). + + Starting with version 5.11, URI takes this distinction into account. + Setting the environment variable `URI_HAS_RESERVED_SQUARE_BRACKETS` + (programmatically or via the shell), restores the old behavior. + + #-- restore 5.10 behavior programmatically + BEGIN { + $ENV{URI_HAS_RESERVED_SQUARE_BRACKETS} = 1; + } + use URI (); + + _Note_: This environment variable is just used during initialization and has to be set + _before_ module URI is used/required. Changing it at run time has no effect. + + Its value can be checked programmatically by accessing the constant + `URI::HAS_RESERVED_SQUARE_BRACKETS`. + # BUGS There are some things that are not quite right: |