The properties com.openexchange.passwordchange.allowedPattern and com.openexchange.passwordchange.allowedPatternHint are added to the configuration file passwordchange.properties. Additionally, the description of all other properties in this file have been rendered more precisely:

# Configures whether to show a graphical indicator reflecting the strength of
# the current password or not. The strength is evaluated based on matching
# performed against the pattern defined via
# com.openexchange.passwordchange.regexp during typing. Possible values are
# true to show the strength, or false, otherwise. Defaults to false.
com.openexchange.passwordchange.showStrength=false

# Specifies the minimum required length of a password entered by the user.
# Passwords shorter than the configured length are not accepted. Defaults to
# 4.
com.openexchange.passwordchange.minLength=4

# Specifies the minimum required length of a password entered by the user.
# Passwords shorter than the configured length are not accepted. A value of 0
# disables the check and allows an unlimited length. Defaults to 0.
com.openexchange.passwordchange.maxLength=0

# Configures a regular expression pattern to use when calculating the strength
# if indicating com.openexchange.passwordchange.showStrength is true, i.e.
# any character not matching the pattern increases the displayed password
# strength. Defaults to [^a-z0-9].
com.openexchange.passwordchange.regexp=[^a-z0-9]

# Defines a string that is shown as an example of special characters that
# increase a passwords' strength. This should be a subset of characters
# matched by the pattern defined at com.openexchange.passwordchange.regexp.
# Defaults to $,