From: janis_papanagnou+ng@hotmail.com   
      
   On 2025-12-27 21:03, Lew Pitcher wrote:   
   > On Sat, 27 Dec 2025 20:47:37 +0100, Janis Papanagnou wrote:   
   >> On 2025-12-27 20:17, Scott Lurndal wrote:   
   >>>   
   >>> There is an ISO standard for 6-bit characters (ISO 646).   
   >>   
   >> I think you're confusing something here. ISO 646 (AKA IA5) is   
   >> a set of 7 bit character sets (with national variants) mostly   
   >> resembling ASCII.   
   >   
   > If you trust Wikipedia, the article "Six Bit character code"   
   > (https://en.wikipedia.org/wiki/Six-bit_character_code) mentions   
   > that "ISO Recommendation R 646-1967" included a 6bit code, which   
   > was dropped when they issued ISO 646-1973.   
      
   Contents of an historic superseded ISO "Recommendation" is of   
   no relevance if we want to *classify* the "ISO Standard 646".   
   And more so if we are looking specifically for 6 bit character   
   sets; there are such beasts, but in specific other places[*].   
   But ISO 646 in all its existing national variances is purely 7   
   bit.   
      
   (Above still quoted statement just needed correction, and I   
   don't think it's worth any further discussion beyond that.)   
      
   Janis   
      
   [*] Note that there's other character codes "standards", also 5   
   or 6 bit, used in telephone, telegraph, and similar contexts -   
   the CCITT (now ITU-T) provided some; their standards are called   
   "Recommendations", BTW, and often adopted by ISO as "Standards".   
   Many are irrelevant nowadays or deprecated. (See [**] and search   
   the page for "Character String Types", if you're interested.)   
      
   [**]   
   https://www.oss.com/asn1/resources/asn1-made-simple/asn1-quick-reference.html   
      
   > [...]   
      
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