GEDCOM

GEDCOM stands for Genealogical Data Communications and is a file format specification developed by the Family and Church History Department of The Church of Jesus Christ of Latter-day Saints. It allows different genealogical software programs to share data with each other.

GEDCOM References

• gedcom.io GEDCOM specification documents (versions 7.0.1, 5.5.1, 5.5)
• GEDCOM From Wikipedia
• GEDCOM 5.5 (Envoy, pdf, html)
• Gedcom.pm [Internet archive capture: 24 Dec 2013]
• GEDCOM 5.5.1 draft (pdf) 2 October 1999
• GEDCOM 5.5.1 (pdf) 15 November 2019, Final version released with updated email, dates, and copyright.
• GEDCOM 5.5.5 2 October 2019 Unsanctioned, copyright violation
• GEDCOM 6.0 beta (archived pdf) - Note - this effort appears to have been abandoned and the PDF (http://www.familysearch.org/GEDCOM/GedXML60.pdf) document link is invalid on the sponsoring FamilySearch website.

GEDCOM Testing

• Gedcom.pm
• gedchk (perl), gedchk.exe
• GEDitCOM "Torture Test" files
• ANSEL and Unicode GEDCOM sample files
• Calico Pie's GEDCOM Coverage Test
• VGed (Windows OS)
• Gedcom Validation by Tamura Jones.

Converting ANSEL to Unicode and back

• Gramps exports and imports ANSEL GEDCOM, but not all codes are supported. Test the output on the character ? which is used if a character is not understood
• Perl MARC::Charset module: Available on cpan, and well supported . Can convert MARC8 to Unicode and back. As ANSEL is a subset of MARC8 (consisting of the (extended) latin characters) it will convert all ANSEL GEDCOMS to Unicode. (:arrow:) More info, and a script that can convert: see the attachment to bug 831.
• marc4j - Java implementation of a convertor, also MARC8 to Unicode. Unclear if it converts correctly combined unicode characters.

ANSEL/MARC References

• ANSI/NISO Z39.47-1993(R2002)
• Library of Congress, MARC specification tables
• MARC proposal 2006-09, Lossless technique for conversion of Unicode to MARC-8
• MARC proposal 2006-04, Technique for conversion of Unicode to MARC-8

Unofficial ANSEL to Unicode conversion lists

These cover the original ANSEL spec, now preseded by MARC8.

• ANSEL to Unicode by Thomas Berger
• ANSEL to Unicode by Heiner Eichmann
• Latin Characters in Unicode and ANSEL

See also

Current open Feature requests for Gramps

• 6023 Export Family Historian GEDCOM Extensions
• 688 Support for Gedcom 5.5EL (or Gedcom-L the more recent standard)
• 9249 GEDCOM import improvements to support Ancestry.com, FTM 2012/2014 and FTM for MAC 3
• GEDCOM 7 support

Other wiki pages for GEDCOM

• Gramps and GEDCOM
• GEDCOM 7 support
• Addon:GEDCOM Extensions addon exporter plugin (source code: addons-source/blob/master/GedcomExtensions/GedcomExtensions.py
• Lossless GEDCOM Export
• Import of foreign language GEDCOM
• Gramps Glossary term: GEDCOM
• Other genealogy tools
• Import from another genealogy program (GEDCOM dialects)

Related source code 

• gramps/plugins/lib/libgedcom.py - (custom tag section)
• gramps/plugins/importer/importgedcom.py
• gramps/plugins/export/exportgedcom.py
• GedcomExtensions.py addon

Other reference pages for related file formats

• Gramps XML
• ged1212xml
• GEDCOM Import/Export-Filter project on ODSN (Open Source Development Network)

Collections of GEDCOM extension tags used in different programs

• Import from another genealogy program (GEDCOM dialects)
• Family Tree Maker to GEDCOM to Other Apps Crosswalk, by Keith Riggle (This spreadsheet shows alot of the custom GEDCOM extension tags for a number of programs.)
• Manage Family Trees - GEDCOM import
• GEDCOM Extension List (FHUG Knowledge Base), GEDCOM custom tags used by Family Historian
• GEDCOM Files - Custom tags in Legacy Family Tree
• (German) Collection of GEDCOM extension tags used in different programs

Others projects

• GEDCOM (WeRelate.org) is a project for parsing objects ignored by a model. It includes classes and attributes for every GEDCOM tag sequence appearing in more than 4% of the 7000 GEDCOMs submitted to WeRelate.org over the past five years, with the exception of four software-specific schema tags: SCHEMA, _EVENT_DEFN, _PLAC_DEFN, and _EVDEF, generated by Family Tree Maker, Personal Ancestral File, Legacy, and RootsMagic respectively.

• Dallan Quass GitHub GEDCOM repository incudes the demo. GEDCOM -> model -> json -> model -> GEDCOM round-trip shows the GEDCOM tags that are represented in the model as extensions, and tags that cannot be represented.

• Specification differences between the object model and the GEDCOM 5.5 Specification.
• set of UML diagrams illustrating the core GEDCOM class and each of the top-level objects.