ISO-8859-14 was originally proposed for the Sami languages.3 ISO 8859-12 was proposed for Celtic.4 Later, ISO 8859-12 was proposed for Devanagari, so the Celtic proposal was changed to ISO 8859-14. The Sami proposal was changed to ISO 8859-15,5 but it got rejected as an ISO/IEC 8859 part, although it was registered as ISO-IR-197.6
The original proposal used a different arrangement of points 0xA1–BF.7 At the committee draft stage of the specification, a dotless i was included at 0xAE,8 which was changed to a registered trademark sign (matching ISO-8859-1) in the final publication.
ISO-IR-182, an earlier (registered in 1994) modification of ISO-8859-1, had added the letters Ẁ, Ẃ, Ẅ, Ỳ, Ÿ, Ŵ, Ŷ and their lowercase forms (except for ÿ, which was already included) for Welsh language use.9 The final published version of ISO-8859-14 includes these letters in the same positions which they appear at in ISO-IR-182.
Differences from ISO-8859-1 have the Unicode code point number below the character.
The first draft had positions A0-BF different. It did not include the pilcrow sign, but included the cent sign instead at its Latin-1 position. Later, it was ruled that the pilcrow sign was more common, so the pilcrow sign remains at its Latin-1 position, and the cent sign was removed instead.
Differences from ISO-8859-14 have the Unicode code point below them.
"SheetJS/js-codepage". GitHub. 12 October 2021. https://github.com/SheetJS/js-codepage/blob/cbdc9486c175be0e555f8b2573c531bb801ee457/codepage.md ↩
"Cpi/CPIISO/Codepage.TXT at master · FDOS/Cpi". GitHub. https://github.com/FDOS/cpi/blob/master/CPIISO/codepage.txt ↩
Everson, Michael. "Proposed ISO 8859-14 (later 15)". http://www.evertype.com/pics/emonopics/latin9.jpg ↩
Everson, Michael. "Proposed ISO 8859-12 (later 14)". http://www.evertype.com/pics/emonopics/latin7.jpg ↩
Everson, Michael (1996-06-19). Proposal for a new part of ISO/IEC 8859: Latin alphabet No. 9 (Sámi). /wiki/Michael_Everson ↩
Swedish Institute for Standards (1997-01-24). ISO-IR-197: Sami supplementary Latin set (PDF). ITSCJ/IPSJ. /wiki/Swedish_Standards_Institute ↩
Everson, Michael (1997-05-05). "ISO/IEC CD 8859-14:1997 — Latin alphabet No. 8 (Celtic)" (Committee Draft). http://www.evertype.com/standards/iso8859/8859-14.html ↩
British Standards Institution (1994-03-16). ISO-IR-182: Welsh variant of Latin Alphabet No. 1 (right-hand part) (PDF). ITSCJ/IPSJ. /wiki/British_Standards_Institution ↩
Kuhn, Markus; Whistler, Ken (1999-07-27). "ISO/IEC 8859-14:1998 to Unicode". 8859 to Unicode mapping tables. Unicode, Inc. https://www.unicode.org/Public/MAPPINGS/ISO8859/DatedVersions/8859-14-1998.TXT ↩
International Components for Unicode (ICU), iso-8859_14-1998.ucm, 1999-07-27 https://github.com/unicode-org/icu/blob/master/icu4c/source/data/mappings/iso-8859_14-1998.ucm ↩