Expands single environment variable.
const AName: String
Name of variable without %.
Variable value or empty string if variable wasn't defined.
This is default implementation for variable name convertor for ExpandEnvVars function.
This default implementation supports all standard system and user environment variables and also adds the following additional EurekaLog pseudo-variables:
This routine is often replaced in EurekaLog classes to supply extra variables. For example, exception informational class adds support for %_ExceptMsg% variable.
Build date: 2019-01-31
Last edited: 2019-01-31
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