Adds or updates a value in an INI file.
If the value is already in the INI file, then it is updated in-place; otherwise, a new one is added to the matching section. Setting value to null removes the line if it is present.
Whitespace and comments on other lines are preserved.
INI file lines (as in parseIni)
fully-qualified name of the value to update (use . to specify section path)
new value to write
See Implementation
Adds or updates a value in an INI file.
If the value is already in the INI file, then it is updated in-place; otherwise, a new one is added to the matching section. Setting value to null removes the line if it is present.
Whitespace and comments on other lines are preserved.