Whether "." in this regular expression matches line terminators.
When false, the "." character matches a single character, unless that character is a line terminator. When true, then the "." character will match any single character including line terminators.
This feature is distinct from isMultiline
, as they affect the behavior of different pattern characters, and so they can be used together or separately.
@Since("2.4") bool get isDotAll;
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https://api.dart.dev/stable/2.5.0/dart-core/RegExp/isDotAll.html