Single-octet labels and their support various browsers

The results for windows-1252 (and friends) is confusing because this is a common fallback encoding.

Label	mac-opera	mac-firefox	win-internetexplorer	mac-safari	mac-chrome
arabic
arabic	✓	✓	✓	✓	✓
asmo-708	✓	✓	✓	✓	✓
csiso88596e	✓	✓
csiso88596i	✓	✓
csisolatinarabic	✓	✓	✓	✓	✓
ecma-114	✓	✓	✓	✓	✓
iso-8859-6	✓	✓	✓	✓	✓
iso-8859-6-e	✓	✓		✓	✓
iso-8859-6-i	✓	✓		✓	✓
iso-ir-127	✓	✓	✓	✓	✓
iso8859-6	✓	✓		✓	✓
iso88596	✓	✓
iso_8859-6	✓	✓	✓
iso_8859-6:1987	✓		✓	✓	✓
asmo-708
arabic	✓	✓	✓	✓	✓
asmo-708	✓	✓	✓	✓	✓
csiso88596e	✓	✓
csiso88596i	✓	✓
csisolatinarabic	✓	✓	✓	✓	✓
ecma-114	✓	✓	✓	✓	✓
iso-8859-6	✓	✓	✓	✓	✓
iso-8859-6-e	✓	✓		✓	✓
iso-8859-6-i	✓	✓		✓	✓
iso-ir-127	✓	✓	✓	✓	✓
iso8859-6	✓	✓		✓	✓
iso88596	✓	✓
iso_8859-6	✓	✓	✓
iso_8859-6:1987	✓		✓	✓	✓
cp1256
cp1256	✓	✓	✓	✓	✓
microsoft-cp1256	✓
windows-1256	✓	✓	✓	✓	✓
x-cp1256	✓	✓
csisolatin2
csisolatin2	✓	✓	✓	✓	✓
iso-8859-2	✓	✓	✓	✓	✓
iso-ir-101	✓	✓	✓	✓	✓
iso8859-2	✓	✓	✓	✓	✓
iso88592	✓	✓
iso_8859-2	✓	✓	✓
iso_8859-2:1987	✓		✓	✓	✓
l2	✓	✓	✓	✓	✓
latin2	✓	✓	✓	✓	✓
csisolatin3
csisolatin3	✓	✓	✓	✓	✓
iso-8859-3	✓	✓	✓	✓	✓
iso-ir-109	✓	✓	✓	✓	✓
iso8859-3	✓	✓		✓	✓
iso88593	✓	✓
iso_8859-3	✓	✓	✓
iso_8859-3:1988	✓		✓	✓	✓
l3	✓	✓	✓	✓	✓
latin3	✓	✓	✓	✓	✓
csisolatin4
csisolatin4	✓	✓	✓	✓	✓
iso-8859-4	✓	✓	✓	✓	✓
iso-ir-110	✓	✓	✓	✓	✓
iso8859-4	✓	✓		✓	✓
iso88594	✓	✓
iso_8859-4	✓	✓	✓
iso_8859-4:1988	✓		✓	✓	✓
l4	✓	✓	✓	✓	✓
latin4	✓	✓	✓	✓	✓
csisolatin5
cp1254	✓	✓		✓	✓
csisolatin5	✓	✓	✓	✓	✓
iso-8859-9	✓	✓	✓	✓	✓
iso-ir-148	✓	✓	✓	✓	✓
iso8859-9	✓	✓		✓	✓
iso88599	✓	✓
iso_8859-9	✓	✓	✓
iso_8859-9:1989	✓		✓	✓	✓
l5	✓	✓	✓	✓	✓
latin5	✓	✓	✓	✓	✓
microsoft-cp1254	✓
windows-1254	✓	✓	✓	✓	✓
x-cp1254	✓	✓
csisolatincyrillic
csisolatincyrillic	✓	✓	✓	✓	✓
cyrillic	✓	✓	✓	✓	✓
iso-8859-5	✓	✓	✓	✓	✓
iso-ir-144	✓	✓	✓	✓	✓
iso8859-5	✓	✓		✓	✓
iso88595	✓	✓
iso_8859-5	✓	✓	✓
iso_8859-5:1988	✓		✓	✓	✓
csisolatingreek
csisolatingreek	✓	✓	✓	✓	✓
ecma-118	✓	✓	✓	✓	✓
elot_928	✓	✓	✓	✓	✓
greek	✓	✓	✓	✓	✓
greek8	✓	✓	✓	✓	✓
iso-8859-7	✓	✓	✓	✓	✓
iso-ir-126	✓	✓	✓	✓	✓
iso8859-7	✓	✓		✓	✓
iso88597	✓	✓
iso_8859-7	✓	✓	✓
iso_8859-7:1987	✓		✓	✓	✓
sun_eu_greek		✓		✓	✓
csisolatinhebrew
csiso88598e	✓	✓
csiso88598i	✓	✓		✓	✓
csisolatinhebrew	✓	✓	✓	✓	✓
hebrew	✓	✓	✓	✓	✓
iso-8859-8	✓	✓	✓	✓	✓
iso-8859-8 visual	✓	✓	✓		✓
iso-8859-8-e	✓	✓		✓	✓
iso-8859-8-i	✓	✓	✓	✓	✓
iso-8859-8i		✓
iso-ir-138	✓	✓	✓	✓	✓
iso8859-8	✓	✓		✓	✓
iso88598	✓	✓
iso_8859-8	✓	✓	✓
iso_8859-8:1988	✓		✓	✓	✓
logical			✓	✓	✓
visual	✓	✓	✓	✓	✓
iso-8859-11
dos-874			✓	✓	✓
ibm874		✓
iso-8859-11	✓	✓	✓	✓	✓
iso8859-11	✓	✓		✓	✓
iso885911	✓	✓
tis-620	✓	✓	✓	✓	✓
tis-620-2533	✓
tis620		✓
windows-874	✓	✓	✓	✓	✓
iso-8859-13
iso-8859-13	✓	✓	✓	✓	✓
iso8859-13	✓	✓		✓	✓
iso885913	✓	✓
iso-8859-15
csisolatin9			✓	✓	✓
iso-8859-15	✓	✓	✓	✓	✓
iso8859-15	✓	✓		✓	✓
iso885915	✓	✓
iso_8859-15	✓	✓	✓
l9			✓	✓	✓
latin9			✓
koi8-r
cskoi8r	✓		✓	✓	✓
koi			✓	✓	✓
koi8			✓	✓	✓
koi8-r	✓	✓	✓	✓	✓
koi8r			✓
koi8-u
koi8-ru			✓
koi8-u	✓	✓	✓	✓	✓
macintosh
csmacintosh	✓	✓		✓	✓
mac	✓	✓		✓	✓
macintosh	✓	✓	✓	✓	✓
x-mac-roman	✓	✓		✓	✓
obviouslyfake
437			✓	✓
646		✓
850		✓		✓
852		✓		✓
855		✓		✓
857		✓		✓
862		✓		✓
864		✓
864i		✓
866	✓	✓		✓
ansi-1251		✓
ansi_x3.4-1968	✓	✓
ansi_x3.4-1986	✓
armscii-8		✓
ascii	✓	✓
ccsid00858			✓	✓
cp-866		✓
cp00858			✓	✓
cp1250	✓	✓		✓	✓
cp1251	✓	✓		✓	✓
cp1252	✓	✓
cp1253	✓	✓		✓	✓
cp1254	✓	✓		✓	✓
cp1255	✓	✓		✓	✓
cp1257	✓	✓		✓	✓
cp1258	✓	✓		✓	✓
cp367	✓
cp437			✓	✓
cp819	✓	✓	✓
cp850		✓	✓	✓
cp852		✓	✓	✓
cp855		✓	✓	✓
cp857		✓	✓	✓
cp858			✓	✓
cp860			✓	✓
cp861			✓	✓
cp862		✓	✓	✓
cp863			✓	✓
cp864		✓	✓	✓	✓
cp864i		✓
cp865			✓	✓
cp866	✓	✓	✓	✓
cp869			✓	✓
csascii	✓
csibm850		✓
csibm852		✓
csibm855		✓		✓
csibm857		✓		✓
csibm862		✓
csibm864		✓		✓	✓
csibm864i		✓
csibm866	✓	✓		✓
csiso103t618bit
csiso111ecmacyrillic		✓
csiso88596e	✓	✓
csiso88596i	✓	✓
csiso88598e	✓	✓
csiso88598i	✓	✓		✓	✓
csisolatin1	✓	✓	✓
csisolatin6	✓	✓		✓	✓
csisolatin9			✓	✓	✓
cskoi8r	✓		✓	✓	✓
csmacintosh	✓	✓		✓	✓
cspc8codepage437			✓	✓
csviscii	✓	✓
din_66003
dos-720			✓	✓	✓
dos-862			✓	✓
dos-874			✓	✓	✓
ecma-cyrillic		✓
geostd8		✓
german
ibm-864		✓		✓	✓
ibm-864i		✓
ibm00858			✓	✓
ibm367	✓
ibm437			✓	✓
ibm737			✓	✓
ibm775			✓	✓
ibm819	✓	✓	✓
ibm850		✓	✓	✓
ibm852		✓	✓	✓
ibm855		✓	✓	✓
ibm857		✓	✓	✓
ibm860			✓	✓
ibm861			✓	✓
ibm862		✓	✓	✓
ibm863			✓	✓
ibm864		✓	✓	✓	✓
ibm864i		✓
ibm865			✓	✓
ibm866	✓	✓	✓	✓
ibm869			✓	✓
ibm874		✓
invariant	✓
irv
iso-8859-1	✓	✓	✓
iso-8859-10	✓	✓		✓	✓
iso-8859-14	✓	✓		✓	✓
iso-8859-16	✓	✓		✓	✓
iso-8859-6-e	✓	✓		✓	✓
iso-8859-6-i	✓	✓		✓	✓
iso-8859-8 visual	✓	✓	✓		✓
iso-8859-8-e	✓	✓		✓	✓
iso-8859-8i		✓
iso-ir-100	✓	✓	✓
iso-ir-103
iso-ir-111		✓
iso-ir-157	✓	✓		✓	✓
iso-ir-6	✓
iso646-us	✓
iso8859-1	✓	✓	✓
iso8859-10	✓	✓		✓	✓
iso8859-11	✓	✓		✓	✓
iso8859-13	✓	✓		✓	✓
iso8859-14	✓	✓		✓	✓
iso8859-15	✓	✓		✓	✓
iso8859-3	✓	✓		✓	✓
iso8859-4	✓	✓		✓	✓
iso8859-5	✓	✓		✓	✓
iso8859-6	✓	✓		✓	✓
iso8859-7	✓	✓		✓	✓
iso8859-8	✓	✓		✓	✓
iso8859-9	✓	✓		✓	✓
iso88591	✓	✓
iso885910	✓	✓
iso885911	✓	✓
iso885913	✓	✓
iso885914	✓	✓
iso885915	✓	✓
iso88592	✓	✓
iso88593	✓	✓
iso88594	✓	✓
iso88595	✓	✓
iso88596	✓	✓
iso88597	✓	✓
iso88598	✓	✓
iso88599	✓	✓
iso_646.basic:1983	✓
iso_646.irv:1991	✓
iso_8859-1	✓	✓	✓
iso_8859-15	✓	✓	✓
iso_8859-1:1987	✓		✓
iso_8859-2	✓	✓	✓
iso_8859-2:1987	✓		✓	✓	✓
iso_8859-3	✓	✓	✓
iso_8859-3:1988	✓		✓	✓	✓
iso_8859-4	✓	✓	✓
iso_8859-4:1988	✓		✓	✓	✓
iso_8859-5	✓	✓	✓
iso_8859-5:1988	✓		✓	✓	✓
iso_8859-6	✓	✓	✓
iso_8859-6:1987	✓		✓	✓	✓
iso_8859-7	✓	✓	✓
iso_8859-7:1987	✓		✓	✓	✓
iso_8859-8	✓	✓	✓
iso_8859-8:1988	✓		✓	✓	✓
iso_8859-9	✓	✓	✓
iso_8859-9:1989	✓		✓	✓	✓
koi			✓	✓	✓
koi8			✓	✓	✓
koi8-ru			✓
koi8r			✓
l1	✓	✓	✓
l6	✓	✓		✓	✓
l9			✓	✓	✓
latin1	✓	✓	✓
latin6	✓	✓		✓	✓
latin9			✓
logical			✓	✓	✓
mac	✓	✓		✓	✓
microsoft-cp1250	✓
microsoft-cp1251	✓
microsoft-cp1252	✓
microsoft-cp1253	✓
microsoft-cp1254	✓
microsoft-cp1255	✓
microsoft-cp1256	✓
microsoft-cp1257	✓
microsoft-cp1258	✓
norwegian
ns_4551-1
obviouslyfake	✓	✓		✓	✓
obviouslyfake2
obviouslyfake3
pc-multilingual-850+euro
sami-ws2	✓
sen_850200_b
sun_eu_greek		✓		✓	✓
swedish
t.61
t.61-8bit
tcvn	✓
tis-620-2533	✓
tis620		✓
us	✓
us-ascii	✓	✓
viettcvn	✓
viscii	✓	✓
windows-1252	✓	✓	✓
windows-sami-2	✓
ws2	✓
x-ansi			✓
x-cp1252	✓	✓
x-cp1253	✓	✓
x-cp1254	✓	✓
x-cp1255	✓	✓
x-cp1256	✓	✓
x-cp1257	✓	✓
x-cp1258	✓	✓
x-cp20261
x-cp20269
x-europa
x-ia5
x-ia5-german
x-ia5-norwegian
x-ia5-swedish
x-iscii-as			✓
x-iscii-be			✓
x-iscii-de			✓
x-iscii-gu			✓
x-iscii-ka			✓
x-iscii-ma			✓
x-iscii-or			✓
x-iscii-pa			✓
x-iscii-t
x-iscii-ta			✓
x-mac-arabic			✓
x-mac-ce	✓	✓	✓	✓
x-mac-croatian		✓	✓	✓
x-mac-devanagari		✓		✓
x-mac-farsi
x-mac-greek	✓	✓	✓	✓
x-mac-gujarati		✓		✓
x-mac-gurmukhi		✓
x-mac-hebrew			✓
x-mac-icelandic		✓	✓	✓
x-mac-roman	✓	✓		✓	✓
x-mac-romanian		✓	✓	✓
x-mac-thai
x-mac-turkish	✓	✓	✓	✓
x-mac-ukrainian		✓	✓	✓	✓
x-viet-tcvn5712		✓
x-viet-vps		✓
x-vps	✓
windows-1250
cp1250	✓	✓		✓	✓
microsoft-cp1250	✓
windows-1250	✓	✓	✓	✓	✓
x-cp1250	✓	✓	✓	✓	✓
windows-1251
ansi-1251		✓
cp1251	✓	✓		✓	✓
microsoft-cp1251	✓
windows-1251	✓	✓	✓	✓	✓
x-cp1251	✓	✓	✓	✓	✓
windows-1253
cp1253	✓	✓		✓	✓
microsoft-cp1253	✓
windows-1253	✓	✓	✓	✓	✓
x-cp1253	✓	✓
windows-1255
cp1255	✓	✓		✓	✓
microsoft-cp1255	✓
windows-1255	✓	✓	✓	✓	✓
x-cp1255	✓	✓
windows-1257
cp1257	✓	✓		✓	✓
microsoft-cp1257	✓
windows-1257	✓	✓	✓	✓	✓
x-cp1257	✓	✓
windows-1258
cp1258	✓	✓		✓	✓
microsoft-cp1258	✓
windows-1258	✓	✓	✓	✓	✓
x-cp1258	✓	✓
x-mac-cyrillic
x-mac-cyrillic	✓	✓	✓	✓	✓
x-mac-ukrainian		✓	✓	✓	✓
x-user-defined
cp819	✓	✓	✓
csisolatin1	✓	✓	✓
ibm819	✓	✓	✓
iso-ir-100	✓	✓	✓
iso8859-1	✓	✓	✓
iso_8859-1	✓	✓	✓
iso_8859-1:1987	✓		✓
l1	✓	✓	✓
latin1	✓	✓	✓
windows-1252	✓	✓	✓
x-ansi			✓
x-user-defined	✓	✓	✓	✓	✓
cp1250
cp1250	✓	✓		✓	✓
cp864
ibm864		✓	✓	✓	✓
cp864		✓	✓	✓	✓
cp866
ibm866	✓	✓	✓	✓
cp866	✓	✓	✓	✓
csisolatin6
latin6	✓	✓		✓	✓
l6	✓	✓		✓	✓
iso-ir-157	✓	✓		✓	✓
iso-8859-10	✓	✓		✓	✓
iso8859-10	✓	✓		✓	✓
csisolatin6	✓	✓		✓	✓
iso-8859-14
iso-8859-14	✓	✓		✓	✓
iso8859-14	✓	✓		✓	✓
iso-8859-16
iso-8859-16	✓	✓		✓	✓
x-mac-ce
x-mac-ce	✓	✓	✓	✓
x-mac-greek
x-mac-greek	✓	✓	✓	✓
x-mac-turkish
x-mac-turkish	✓	✓	✓	✓
x-mac-ukrainian
x-mac-ukrainian		✓	✓	✓	✓
ansi_x3.4-1968
ascii	✓	✓
ansi_x3.4-1968	✓	✓
us-ascii	✓	✓
cp850
cp850		✓	✓	✓
ibm850		✓	✓	✓
cp852
cp852		✓	✓	✓
ibm852		✓	✓	✓
cp855
ibm855		✓	✓	✓
cp855		✓	✓	✓
cp857
ibm857		✓	✓	✓
cp857		✓	✓	✓
cp862
cp862		✓	✓	✓
ibm862		✓	✓	✓
dos-720
dos-720			✓	✓	✓
x-mac-arabic
x-mac-arabic			✓
x-mac-croatian
x-mac-croatian		✓	✓	✓
x-mac-hebrew
x-mac-hebrew			✓
x-mac-icelandic
x-mac-icelandic		✓	✓	✓
x-mac-romanian
x-mac-romanian		✓	✓	✓
437
cp437			✓	✓
437			✓	✓
ibm437			✓	✓
cspc8codepage437			✓	✓
ccsid00858
cp858			✓	✓
ccsid00858			✓	✓
cp00858			✓	✓
ibm00858			✓	✓
cp860
cp860			✓	✓
ibm860			✓	✓
cp861
cp861			✓	✓
ibm861			✓	✓
cp863
cp863			✓	✓
ibm863			✓	✓
cp865
ibm865			✓	✓
cp865			✓	✓
cp869
cp869			✓	✓
ibm869			✓	✓
csviscii
csviscii	✓	✓
viscii	✓	✓
ibm737
ibm737			✓	✓
ibm775
ibm775			✓	✓
x-mac-devanagari
x-mac-devanagari		✓		✓
x-mac-farsi
x-mac-farsi
x-mac-gujarati
x-mac-gujarati		✓		✓
x-mac-gurmukhi
x-mac-gurmukhi		✓
x-mac-thai
x-mac-thai
864i
cp864i		✓
csibm864i		✓
ibm-864i		✓
ibm864i		✓
864i		✓
armscii-8
armscii-8		✓
csiso103t618bit
csiso103t618bit
iso-ir-103
t.61-8bit
t.61
csiso111ecmacyrillic
csiso111ecmacyrillic		✓
iso-ir-111		✓
ecma-cyrillic		✓
din_66003
german
din_66003
x-ia5-german
geostd8
geostd8		✓
irv
x-ia5
irv
norwegian
ns_4551-1
norwegian
x-ia5-norwegian
sami-ws2
windows-sami-2	✓
ws2	✓
sami-ws2	✓
sen_850200_b
swedish
sen_850200_b
x-ia5-swedish
tcvn
tcvn	✓
viettcvn	✓
x-cp20261
x-cp20261
x-cp20269
x-cp20269
x-iscii-as
x-iscii-as			✓
x-iscii-be			✓
x-iscii-de
x-iscii-de			✓
x-iscii-gu
x-iscii-gu			✓
x-iscii-ka
x-iscii-ka			✓
x-iscii-ma
x-iscii-ma			✓
x-iscii-or
x-iscii-or			✓
x-iscii-pa
x-iscii-pa			✓
x-iscii-ta
x-iscii-ta			✓
x-viet-vps
x-viet-vps		✓