GEDCOM Lexer Plugin for Notepad++

This is a GEDCOM Plugin for Notepad++, the popular open-source Windows text editor. Notepad++ is a powerful general-purpose text editor. Many plugins have been developed for it to extend its capabilities. 
GEDCOM file in Notepad++ with GEDCOM lexer plugin
Technically, this is a lexer plugin (GedcomLexer.dll) for GEDCOM files. A lexer is a program that performs lexical analysis, in this case of GEDCOM files. The lexer follows the data representation grammar of GEDCOM specification version 5.5.1. It recognizes the possible tokens in a line: level, xref_id, tag, user tag, pointer, value, and escape. Each of these tokens has a default color and text style supplied by the plugin which can be customized through Notepad++'s Style Configurator. When an invalid character in a token is detected, the lexer enters the Invalid state and outputs the remainder of the line in the Invalid style (default red).
In the current release (0.2.0), folding (hiding detail text) is based on the line level. In GEDCOM files, logical records begin at line level 0. Subordinate lines with levels 1 or higher contribute to the logical record which was defined by the level 0 line that preceded it. So, folding allows a user to see only level 0 lines (logical record starts) or level 0 lines plus selected additional levels, giving the user some control over the amount of detail displayed.
The plugin has been tested with a variety of GEDCOM files (*.ged), including UTF-8, UTF-16, ANSI, and ASCII. In release 0.2.0, the ANSEL character set is not supported.
This is released as an open source project on SourceForge: GEDCOM Lexer Plugin for Notepad++. The easiest way to install this plugin is to use the Notepad++ menu command:
                         Plugins->Plugin Manager->Show Plugin Manager
Select "GEDCOM Lexer" in the list of available plugins, then click the Install button and follow the Notepad++ instructions. 

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