GNU Screen

Tested Software version 5.0.1 on Linux. Full results available at ucs-detect repository path data/screen.yaml.

Score Breakdown

Detailed breakdown of how scores are calculated for GNU Screen:

#	Score Type	Raw Score	Final Scaled Score
1	WIDE	99.53%	99.3%
2	NARROW	99.96%	100.0%
3	ZWJ	0.69%	0.7%
4	LANG	91.10%	91.1%
5	VS16	50.00%	50.0%
6	VS15	0.00%	(excluded)
7	SRI	0.00%	0.0%
8	SFZ	100.00%	100.0%
9	RI	100.00%	100.0%
10	FEAT	3.12%	3.3%
11	Graphics	0%	0.0%
12	Resources	49.1%	49.1%

Score Comparison Plot:

The following plot shows how this terminal’s scores compare to all other terminals tested.

Scaled scores comparison across all metrics (normalized 0-100%)

Final Scaled Score Calculation:

• Raw Final Score: 51.96% (weighted average: WIDE + NARROW + ZWJ + LANG + VS16 + 0.33 * SRI + 0.33 * SFZ + RI + CAP + 0.5 * GFX + 0.5 * RSC) the categorized ‘average’ absolute support level of this terminal.

  Note

  RSC (Resources) is a composite CPU, memory, and runtime score. RSC is weighted at 0.5 (half as powerful as other metrics). FEAT (Features) is the fraction of notable features supported. GFX (Graphics) scores 100% for modern protocols (iTerm2, Kitty), 50% for legacy only (Sixel, ReGIS), 0% for none.

• Final Scaled Score: 29.5% (normalized across all terminals tested). Final Scaled scores are normalized (0-100%) relative to all terminals tested

WIDE Score Details:

Wide character support calculation:

• Total successful codepoints: 43386

• Total codepoints tested: 43592

• Formula: 43386 / 43592

• Result: 99.53%

NARROW Score Details:

Narrow character support calculation:

• Total successful codepoints: 36239

• Total codepoints tested: 36254

• Formula: 36239 / 36254

• Result: 99.96%

ZWJ Score Details:

Emoji ZWJ (Zero-Width Joiner) support calculation:

• Total successful sequences: 10

• Total sequences tested: 1445

• Formula: 10 / 1445

• Result: 0.69%

VS16 Score Details:

Variation Selector-16 support calculation:

• Errors: 213 of 426 codepoints tested

• Success rate: 50.0%

• Formula: 50.0 / 100

• Result: 50.00%

VS15 Score Details (excluded from final score):

Variation Selector-15 support calculation:

• Errors: 158 of 158 codepoints tested

• Success rate: 0.0%

• Formula: 0.0 / 100

• Result: 0.00%

SRI Score Details:

Standalone Regional Indicator support calculation:

• Total successful codepoints: 0

• Total codepoints tested: 26

• Formula: 0 / 26

• Result: 0.00%

SFZ Score Details:

Standalone Fitzpatrick skin tone modifier support calculation:

• Total successful codepoints: 5

• Total codepoints tested: 5

• Formula: 5 / 5

• Result: 100.00%

RI Score Details:

Regional Indicator flag sequence support calculation:

• Total successful sequences: 262

• Total sequences tested: 262

• Formula: 262 / 262

• Result: 100.00%

Features Score Details:

Notable terminal features (0.5 / 16):

• Set bracketed paste mode (2004): no

• Synchronized Output (2026): no

• Send FocusIn/FocusOut events (1004): no

• Enable SGR Mouse Mode (1006): no

• Grapheme Clustering (2027): no

• Bracketed Paste MIME (5522): no

• Kitty Keyboard: no

• XTGETTCAP: no

• Text Sizing (OSC 66): no

• Kitty Clipboard Protocol: no

• OSC 52 Clipboard: no

• Kitty Pointer Shapes (OSC 22): no

• Kitty Notifications (OSC 99): no

• Color Report (OSC 10/11): no

• Terminal Identification: no

• Truecolor Detection: partial

Raw score: 3.12%

Graphics Score Details:

Graphics protocol support (0%):

• Sixel: no

• ReGIS: no

• iTerm2: no

• Kitty: no

Scoring: 100% for modern (iTerm2/Kitty), 50% for legacy only (Sixel/ReGIS), 0% for none

Resource Score Details:

• Duration: 899.7s

• Mean CPU: 0.0%

• Mean RSS: 180.5 MB

• Resources Score: 49/100

• Note: log-scale composite cost = log(CPU+1) + log(RSS+1) + log(time+1)

• Scaled result: 49.1%

LANG Score Details (Geometric Mean):

Geometric mean calculation:

• Formula: (p₁ × p₂ × … × pₙ)^(1/n) where n = 118 languages

• About geometric mean

• Result: 91.10%

Wide character support

Wide character support of GNU Screen is 99.5% (206 errors of 43592 codepoints tested).

Sequence of a WIDE character, from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0001D32F	‘\U0001d32f’	So	2	TETRAGRAM FOR GOING TO MEET

Total codepoints: 1

• Shell test using printf(1), '|' should align in output:

  $ printf "\xf0\x9d\x8c\xaf|\\n12|\\n"
  𝌯|
  12|
  

• See Line 42282 of ucs_wide.txt for this sequence in the example file.

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 1.

Narrow character support

Narrow character support of GNU Screen is 100.0% (15 errors of 36254 codepoints tested).

Sequence of a NARROW character, from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+3248	‘\u3248’	No	1	CIRCLED NUMBER TEN ON BLACK SQUARE

Total codepoints: 1

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe3\x89\x88|\\n1|\\n"
  ㉈|
  1|
  

• python wcwidth.wcswidth() measures width 1, while GNU Screen measures width 2.

Emoji ZWJ support

Compatibility of GNU Screen with the Unicode Emoji ZWJ sequence table is 0.7% (1435 errors of 1445 sequences tested).

Sequence of an Emoji ZWJ Sequence, from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0001F3C3	‘\U0001f3c3’	So	2	RUNNER
2	U+0001F3FE	‘\U0001f3fe’	Sk	2	EMOJI MODIFIER FITZPATRICK TYPE-5
3	U+200D	‘\u200d’	Cf	0	ZERO WIDTH JOINER
4	U+2640	‘\u2640’	So	1	FEMALE SIGN
5	U+FE0F	‘\ufe0f’	Mn	0	VARIATION SELECTOR-16
6	U+200D	‘\u200d’	Cf	0	ZERO WIDTH JOINER
7	U+27A1	‘\u27a1’	So	1	BLACK RIGHTWARDS ARROW
8	U+FE0F	‘\ufe0f’	Mn	0	VARIATION SELECTOR-16

Total codepoints: 8

• Shell test using printf(1), '|' should align in output:

  $ printf "\xf0\x9f\x8f\x83\xf0\x9f\x8f\xbe\xe2\x80\x8d\xe2\x99\x80\xef\xb8\x8f\xe2\x80\x8d\xe2\x9e\xa1\xef\xb8\x8f|\\n12|\\n"
  🏃🏾‍♀️‍➡️|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 6.

Variation Selector-16 support

Emoji VS-16 results for GNU Screen is 213 errors out of 426 total codepoints tested, 50.0% success. Sequence of a NARROW Emoji made WIDE by Variation Selector-16, from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+2733	‘\u2733’	So	1	EIGHT SPOKED ASTERISK
2	U+FE0F	‘\ufe0f’	Mn	0	VARIATION SELECTOR-16

Total codepoints: 2

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe2\x9c\xb3\xef\xb8\x8f|\\n12|\\n"
  ✳️|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 1.

Variation Selector-15 support

Emoji VS-15 results for GNU Screen is 158 errors out of 158 total codepoints tested, 0.0% success. Sequence of a WIDE Emoji made NARROW by Variation Selector-15, from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0001F3AE	‘\U0001f3ae’	So	2	VIDEO GAME
2	U+FE0E	‘\ufe0e’	Mn	0	VARIATION SELECTOR-15

Total codepoints: 2

• Shell test using printf(1), '|' should align in output:

  $ printf "\xf0\x9f\x8e\xae\xef\xb8\x8e|\\n1|\\n"
  🎮︎|
  1|
  

Screenshot:

• python wcwidth.wcswidth() measures width 1, while GNU Screen measures width 2.

Standalone Regional Indicator support

Standalone Regional Indicator support of GNU Screen is 0.0% (26 errors of 26 codepoints tested).

Sequence of a standalone Regional Indicator, from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0001F1F3	‘\U0001f1f3’	So	2	REGIONAL INDICATOR SYMBOL LETTER N

Total codepoints: 1

• Shell test using printf(1), '|' should align in output:

  $ printf "\xf0\x9f\x87\xb3|\\n12|\\n"
  🇳|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 1.

Standalone Fitzpatrick modifier support

Standalone Fitzpatrick skin tone modifier support of GNU Screen is 100.0% (0 errors of 5 codepoints tested).

Regional Indicator flag sequence support

Regional Indicator flag sequence support of GNU Screen is 100.0% (0 errors of 262 sequences tested).

Graphics Protocol Support

GNU Screen does not report support for any graphics protocols.

Detection Methods:

• Sixel and ReGIS: Detected via the Device Attributes (DA1) query CSI c (\x1b[c). Extension code 4 indicates Sixel support, 3 ReGIS.

• Kitty graphics: Detected by sending a Kitty graphics query and checking for an OK response.

• iTerm2 inline images: Detected via the iTerm2 capabilities query OSC 1337 ; Capabilities.

Device Attributes Response:

• Extensions reported: 2

• Sixel indicator (4): not present

• ReGIS indicator (3): not present

Language Support

The following 93 languages were tested with 100% success:

(Jinan), (Yeonbyeon), Aja, Amarakaeri, Arabic, Standard, Assyrian Neo-Aramaic, Baatonum, Bamun, Belanda Viri, Bora, Catalan (2), Chickasaw, Chinantec, Chiltepec, Chinese, Gan, Chinese, Hakka, Chinese, Jinyu, Chinese, Mandarin (Beijing), Chinese, Mandarin (Guiyang), Chinese, Mandarin (Harbin), Chinese, Mandarin (Nanjing), Chinese, Mandarin (Simplified), Chinese, Mandarin (Tianjin), Chinese, Mandarin (Traditional), Chinese, Min Nan, Chinese, Wu, Chinese, Xiang, Chinese, Yue, Colorado, Dagaare, Southern, Dangme, Dari, Dendi, Dinka, Northeastern, Ditammari, Dzongkha, Evenki, Farsi, Western, Fon, French (Welche), Fur, Ga, Gen, Gilyak, Gumuz, Japanese, Japanese (Osaka), Japanese (Tokyo), Kabyle, Korean, Lamnso’, Lao, Lingala (tones), Maldivian, Maori (2), Mazahua Central, Mirandese, Mixtec, Metlatónoc, Mongolian, Halh (Mongolian), Mòoré, Nanai, Navajo, Nuosu, Orok, Otomi, Mezquital, Panjabi, Eastern, Panjabi, Western, Pashto, Northern, Picard, Saint Lucian Creole French, Secoya, Seraiki, Shipibo-Conibo, Sinhala, Siona, South Azerbaijani, Tagalog (Tagalog), Tamazight, Central Atlas, Tamil, Tamil (Sri Lanka), Tem, Thai, Thai (2), Tibetan, Central, Ticuna, Uduk, Veps, Vietnamese, Vietnamese (Han nom), Waama, Yaneshaʼ, Yiddish, Eastern, Yoruba, Éwé.

The following 25 languages are not fully supported:

lang	n_errors	n_total	pct_success
Khün	337	396	14.9%
Javanese (Javanese)	449	530	15.3%
Chakma	200	267	25.1%
Tai Dam	120	189	36.5%
Mon	130	332	60.8%
Shan	63	181	65.2%
Burmese	80	268	70.1%
Sanskrit	145	493	70.6%
Malayalam	246	845	70.9%
Sanskrit (Grantha)	79	293	73.0%
Pular (Adlam)	24	93	74.2%
Bengali	96	385	75.1%
Marathi	86	391	78.0%
Hindi	82	390	79.0%
Khmer, Central	90	443	79.7%
Maithili	71	357	80.1%
Nepali	69	352	80.4%
Tamang, Eastern	11	70	84.3%
Gujarati	50	343	85.4%
Magahi	43	314	86.3%
Bhojpuri	41	313	86.9%
Telugu	42	384	89.1%
Kannada	14	287	95.1%
Urdu (2)	1	82	98.8%
Urdu	1	110	99.1%

Khün

Sequence of language Khün from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+1A20	‘\u1a20’	Lo	1	TAI THAM LETTER HIGH KA
2	U+1A60	‘\u1a60’	Mn	0	TAI THAM SIGN SAKOT
3	U+1A20	‘\u1a20’	Lo	1	TAI THAM LETTER HIGH KA

Total codepoints: 3

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe1\xa8\xa0\xe1\xa9\xa0\xe1\xa8\xa0|\\n12|\\n"
  ᨠ᩠ᨠ|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Javanese (Javanese)

Sequence of language Javanese (Javanese) from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+A98F	‘\ua98f’	Lo	1	JAVANESE LETTER KA
2	U+A9BA	‘\ua9ba’	Mc	0	JAVANESE VOWEL SIGN TALING
3	U+A9B4	‘\ua9b4’	Mc	0	JAVANESE VOWEL SIGN TARUNG

Total codepoints: 3

• Shell test using printf(1), '|' should align in output:

  $ printf "\xea\xa6\x8f\xea\xa6\xba\xea\xa6\xb4|\\n12|\\n"
  ꦏꦺꦴ|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Chakma

Sequence of language Chakma from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+00011103	‘\U00011103’	Lo	1	CHAKMA LETTER AA
2	U+0001112C	‘\U0001112c’	Mc	0	CHAKMA VOWEL SIGN E
3	U+0001112D	‘\U0001112d’	Mn	0	CHAKMA VOWEL SIGN AI

Total codepoints: 3

• Shell test using printf(1), '|' should align in output:

  $ printf "\xf0\x91\x84\x83\xf0\x91\x84\xac\xf0\x91\x84\xad|\\n12|\\n"
  𑄃𑄬𑄭|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Tai Dam

Sequence of language Tai Dam from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+AA80	‘\uaa80’	Lo	1	TAI VIET LETTER LOW KO
2	U+AAB0	‘\uaab0’	Mn	0	TAI VIET MAI KANG

Total codepoints: 2

• Shell test using printf(1), '|' should align in output:

  $ printf "\xea\xaa\x80\xea\xaa\xb0|\\n1|\\n"
  ꪀꪰ|
  1|
  

Screenshot:

• python wcwidth.wcswidth() measures width 1, while GNU Screen measures width 2.

Mon

Sequence of language Mon from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+1000	‘\u1000’	Lo	1	MYANMAR LETTER KA
2	U+1060	‘\u1060’	Mn	0	MYANMAR CONSONANT SIGN MON MEDIAL LA
3	U+1031	‘\u1031’	Mc	0	MYANMAR VOWEL SIGN E

Total codepoints: 3

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe1\x80\x80\xe1\x81\xa0\xe1\x80\xb1|\\n12|\\n"
  ကၠေ|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Shan

Sequence of language Shan from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+1004	‘\u1004’	Lo	1	MYANMAR LETTER NGA
2	U+103A	‘\u103a’	Mn	0	MYANMAR SIGN ASAT

Total codepoints: 2

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe1\x80\x84\xe1\x80\xba|\\n1|\\n"
  င်|
  1|
  

Screenshot:

Burmese

Sequence of language Burmese from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+1000	‘\u1000’	Lo	1	MYANMAR LETTER KA
2	U+103A	‘\u103a’	Mn	0	MYANMAR SIGN ASAT
3	U+103B	‘\u103b’	Mc	0	MYANMAR CONSONANT SIGN MEDIAL YA

Total codepoints: 3

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe1\x80\x80\xe1\x80\xba\xe1\x80\xbb|\\n12|\\n"
  က်ျ|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Sanskrit

Sequence of language Sanskrit from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0915	‘\u0915’	Lo	1	DEVANAGARI LETTER KA
2	U+094D	‘\u094d’	Mn	0	DEVANAGARI SIGN VIRAMA
3	U+0924	‘\u0924’	Lo	1	DEVANAGARI LETTER TA
4	U+093F	‘\u093f’	Mc	0	DEVANAGARI VOWEL SIGN I

Total codepoints: 4

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xa4\xe0\xa4\xbf|\\n12|\\n"
  क्ति|
  12|
  

Screenshot:

Malayalam

Sequence of language Malayalam from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0D15	‘\u0d15’	Lo	1	MALAYALAM LETTER KA
2	U+0D4D	‘\u0d4d’	Mn	0	MALAYALAM SIGN VIRAMA
3	U+0D15	‘\u0d15’	Lo	1	MALAYALAM LETTER KA
4	U+0D3E	‘\u0d3e’	Mc	0	MALAYALAM VOWEL SIGN AA

Total codepoints: 4

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xb4\x95\xe0\xb5\x8d\xe0\xb4\x95\xe0\xb4\xbe|\\n12|\\n"
  ക്കാ|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Sanskrit (Grantha)

Sequence of language Sanskrit (Grantha) from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+00011315	‘\U00011315’	Lo	1	GRANTHA LETTER KA
2	U+0001133E	‘\U0001133e’	Mc	0	GRANTHA VOWEL SIGN AA
3	U+00011302	‘\U00011302’	Mc	0	GRANTHA SIGN ANUSVARA

Total codepoints: 3

• Shell test using printf(1), '|' should align in output:

  $ printf "\xf0\x91\x8c\x95\xf0\x91\x8c\xbe\xf0\x91\x8c\x82|\\n12|\\n"
  𑌕𑌾𑌂|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Pular (Adlam)

Sequence of language Pular (Adlam) from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0001E900	‘\U0001e900’	Lu	1	ADLAM CAPITAL LETTER ALIF
2	U+0001E944	‘\U0001e944’	Mn	0	ADLAM ALIF LENGTHENER

Total codepoints: 2

• Shell test using printf(1), '|' should align in output:

  $ printf "\xf0\x9e\xa4\x80\xf0\x9e\xa5\x84|\\n1|\\n"
  𞤀𞥄|
  1|
  

Screenshot:

• python wcwidth.wcswidth() measures width 1, while GNU Screen measures width 2.

Bengali

Sequence of language Bengali from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0995	‘\u0995’	Lo	1	BENGALI LETTER KA
2	U+09BF	‘\u09bf’	Mc	0	BENGALI VOWEL SIGN I
3	U+0982	‘\u0982’	Mc	0	BENGALI SIGN ANUSVARA

Total codepoints: 3

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xa6\x95\xe0\xa6\xbf\xe0\xa6\x82|\\n12|\\n"
  কিং|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Marathi

Sequence of language Marathi from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0915	‘\u0915’	Lo	1	DEVANAGARI LETTER KA
2	U+094D	‘\u094d’	Mn	0	DEVANAGARI SIGN VIRAMA
3	U+0924	‘\u0924’	Lo	1	DEVANAGARI LETTER TA
4	U+093F	‘\u093f’	Mc	0	DEVANAGARI VOWEL SIGN I

Total codepoints: 4

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xa4\xe0\xa4\xbf|\\n12|\\n"
  क्ति|
  12|
  

Screenshot:

Hindi

Sequence of language Hindi from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0915	‘\u0915’	Lo	1	DEVANAGARI LETTER KA
2	U+094D	‘\u094d’	Mn	0	DEVANAGARI SIGN VIRAMA
3	U+0924	‘\u0924’	Lo	1	DEVANAGARI LETTER TA
4	U+093F	‘\u093f’	Mc	0	DEVANAGARI VOWEL SIGN I

Total codepoints: 4

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xa4\xe0\xa4\xbf|\\n12|\\n"
  क्ति|
  12|
  

Screenshot:

Khmer, Central

Sequence of language Khmer, Central from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+1780	‘\u1780’	Lo	1	KHMER LETTER KA
2	U+17D2	‘\u17d2’	Mn	0	KHMER SIGN COENG
3	U+178A	‘\u178a’	Lo	1	KHMER LETTER DA
4	U+17C5	‘\u17c5’	Mc	0	KHMER VOWEL SIGN AU

Total codepoints: 4

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe1\x9e\x80\xe1\x9f\x92\xe1\x9e\x8a\xe1\x9f\x85|\\n12|\\n"
  ក្ដៅ|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Maithili

Sequence of language Maithili from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0915	‘\u0915’	Lo	1	DEVANAGARI LETTER KA
2	U+094D	‘\u094d’	Mn	0	DEVANAGARI SIGN VIRAMA
3	U+0924	‘\u0924’	Lo	1	DEVANAGARI LETTER TA
4	U+093F	‘\u093f’	Mc	0	DEVANAGARI VOWEL SIGN I

Total codepoints: 4

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xa4\xe0\xa4\xbf|\\n12|\\n"
  क्ति|
  12|
  

Screenshot:

Nepali

Sequence of language Nepali from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0915	‘\u0915’	Lo	1	DEVANAGARI LETTER KA
2	U+094D	‘\u094d’	Mn	0	DEVANAGARI SIGN VIRAMA
3	U+0924	‘\u0924’	Lo	1	DEVANAGARI LETTER TA
4	U+093F	‘\u093f’	Mc	0	DEVANAGARI VOWEL SIGN I

Total codepoints: 4

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xa4\xe0\xa4\xbf|\\n12|\\n"
  क्ति|
  12|
  

Screenshot:

Tamang, Eastern

Sequence of language Tamang, Eastern from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0915	‘\u0915’	Lo	1	DEVANAGARI LETTER KA
2	U+094D	‘\u094d’	Mn	0	DEVANAGARI SIGN VIRAMA
3	U+0924	‘\u0924’	Lo	1	DEVANAGARI LETTER TA
4	U+093F	‘\u093f’	Mc	0	DEVANAGARI VOWEL SIGN I

Total codepoints: 4

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xa4\xe0\xa4\xbf|\\n12|\\n"
  क्ति|
  12|
  

Screenshot:

Gujarati

Sequence of language Gujarati from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0A95	‘\u0a95’	Lo	1	GUJARATI LETTER KA
2	U+0ACD	‘\u0acd’	Mn	0	GUJARATI SIGN VIRAMA
3	U+0A95	‘\u0a95’	Lo	1	GUJARATI LETTER KA
4	U+0ABE	‘\u0abe’	Mc	0	GUJARATI VOWEL SIGN AA

Total codepoints: 4

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xaa\x95\xe0\xab\x8d\xe0\xaa\x95\xe0\xaa\xbe|\\n12|\\n"
  ક્કા|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Magahi

Sequence of language Magahi from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0915	‘\u0915’	Lo	1	DEVANAGARI LETTER KA
2	U+094D	‘\u094d’	Mn	0	DEVANAGARI SIGN VIRAMA
3	U+0924	‘\u0924’	Lo	1	DEVANAGARI LETTER TA
4	U+093F	‘\u093f’	Mc	0	DEVANAGARI VOWEL SIGN I

Total codepoints: 4

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\xa4\xe0\xa4\xbf|\\n12|\\n"
  क्ति|
  12|
  

Screenshot:

Bhojpuri

Sequence of language Bhojpuri from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0915	‘\u0915’	Lo	1	DEVANAGARI LETTER KA
2	U+094D	‘\u094d’	Mn	0	DEVANAGARI SIGN VIRAMA
3	U+0918	‘\u0918’	Lo	1	DEVANAGARI LETTER GHA
4	U+094D	‘\u094d’	Mn	0	DEVANAGARI SIGN VIRAMA
5	U+0918	‘\u0918’	Lo	1	DEVANAGARI LETTER GHA
6	U+093F	‘\u093f’	Mc	0	DEVANAGARI VOWEL SIGN I
7	U+094D	‘\u094d’	Mn	0	DEVANAGARI SIGN VIRAMA

Total codepoints: 7

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xa4\x95\xe0\xa5\x8d\xe0\xa4\x98\xe0\xa5\x8d\xe0\xa4\x98\xe0\xa4\xbf\xe0\xa5\x8d|\\n12|\\n"
  क्घ्घि्|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 4.

Telugu

Sequence of language Telugu from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0C15	‘\u0c15’	Lo	1	TELUGU LETTER KA
2	U+0C41	‘\u0c41’	Mc	0	TELUGU VOWEL SIGN U
3	U+0C02	‘\u0c02’	Mc	0	TELUGU SIGN ANUSVARA

Total codepoints: 3

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xb0\x95\xe0\xb1\x81\xe0\xb0\x82|\\n12|\\n"
  కుం|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Kannada

Sequence of language Kannada from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0C95	‘\u0c95’	Lo	1	KANNADA LETTER KA
2	U+0CBE	‘\u0cbe’	Mc	0	KANNADA VOWEL SIGN AA
3	U+0C82	‘\u0c82’	Mc	0	KANNADA SIGN ANUSVARA

Total codepoints: 3

• Shell test using printf(1), '|' should align in output:

  $ printf "\xe0\xb2\x95\xe0\xb2\xbe\xe0\xb2\x82|\\n12|\\n"
  ಕಾಂ|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 3.

Urdu (2)

Sequence of language Urdu (2) from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0601	‘\u0601’	Cf	1	ARABIC SIGN SANAH
2	U+06F1	‘\u06f1’	Nd	1	EXTENDED ARABIC-INDIC DIGIT ONE

Total codepoints: 2

• Shell test using printf(1), '|' should align in output:

  $ printf "\xd8\x81\xdb\xb1|\\n12|\\n"
  ؁۱|
  12|
  

Screenshot:

Urdu

Sequence of language Urdu from midpoint of alignment failure records:

#	Codepoint	Python	Category	wcwidth	Name
1	U+0601	‘\u0601’	Cf	1	ARABIC SIGN SANAH
2	U+06F1	‘\u06f1’	Nd	1	EXTENDED ARABIC-INDIC DIGIT ONE

Total codepoints: 2

• Shell test using printf(1), '|' should align in output:

  $ printf "\xd8\x81\xdb\xb1|\\n12|\\n"
  ؁۱|
  12|
  

Screenshot:

• python wcwidth.wcswidth() measures width 2, while GNU Screen measures width 1.

DEC Private Modes Support

This Terminal does not appear capable of reporting about any DEC Private modes.

Kitty Keyboard Protocol

GNU Screen does not support the Kitty keyboard protocol.

XTGETTCAP (Terminfo Capabilities)

GNU Screen does not support the XTGETTCAP sequence.

Text Sizing Protocol (OSC 66)

GNU Screen does not support the Text Sizing protocol.

Truecolor Support

GNU Screen supports 24-bit truecolor, detectable via:

• XTGETTCAP (RGB capability): no

• DECRQSS (truecolor probe): no

• COLORTERM: yes (truecolor)

Warning

COLORTERM is an environment variable, not a terminal query. It is not forwarded over SSH without SendEnv / AcceptEnv configuration, so detection via COLORTERM alone may be unreliable on remote hosts.

OSC 52 Clipboard Support

GNU Screen does not advertise OSC 52 clipboard support via DA1 extension 52 or XTGETTCAP Ms.

• DA1 extension 52: no

• XTGETTCAP Ms: no

Terminal Identification

GNU Screen could not be identified via XTVERSION, XTGETTCAP TN, ENQ, or TERM_PROGRAM.

• XTVERSION: no

• XTGETTCAP TN: no

• ENQ: no

• TERM_PROGRAM: no

• TERM: yes (screen)

Reproduction

To reproduce these results for GNU Screen, install and run ucs-detect with the following commands:

uvx ucs-detect --rerun data/screen.yaml

Test Performance

The test suite completed in 899.72 seconds (899s).

• Mean CPU: 0.0%

• Mean RSS: 180.5 MB

• Total time: 899.7s

CPU usage during test execution for GNU Screen.

RSS memory usage during test execution for GNU Screen.

Test duration for GNU Screen compared to all other terminals.

CPU % vs duration trade-off for GNU Screen.