ext_conf_template.txt

  # cat=basic; type=text; label=Backwards compatibility format: tt_address can use separate fields for first, middle, and last name. Every time a change is made to a name field tt_address writes the changes back to the internal old combined field. Here you can specify a format for this: use %1$s for the first name, %2$s for the middle name, and %3$s for the last name.
backwardsCompatFormat = %1$s %3$s

  # cat=basic; type=boolean; label=Store backwards compatibility name in name field
storeBackwardsCompatName = 1

  # cat=basic; type=boolean; label=Name field is read only
readOnlyNameField = 1

# cat=backend; type=text; label=Pattern for validation telephone number in TCA with PHP
telephoneValidationPatternForPhp = /[^\d\+\s\-]/

# cat=backend; type=text; label=Pattern for validation telephone number in TCA with JS
telephoneValidationPatternForJs = /[^\d\+\s\-]/g