╔════════════════════════════╗ ═════════════════════════╣ BiDi test – for 80 columns ╠═════════════════════════ ╚════════════════════════════╝ Test cases are structured like this: Title (bold) Optional LTR explanation of the logical order (normal) Reference rendering using similarly looking LTR glyphs (green) Actual rendering, needs to match the reference rendering (cyan) All words, except for the explanation of the logical order wherever it’s deliberately reversed, should show up in human readable order. Some test cases are marked as “should look broken”. This means that the overall look is not what humans are looking for; still, the actual rendering needs to match the reference rendering. At Arabic shaping tests, runs of connected letters are denoted. At box tests the reference rendering is upside down, so you should get nice squares everywhere. ┌──────────────────┐ ──────────────────────────────┤ 1 – Implicit LTR ├────────────────────────────── └──────────────────┘ LTR + RTL Hello1 ⸤Hello23⸣ Hello456 Shlm1 ⸤Shlm23⸣ Shlm456 Hello1 ⸤Hello23⸣ Hello456 456oi7w ⸢23oi7w⸥ 1oi7w Hello1 ⸤Hello23⸣ Hello456 שָׁלוֹם1 ⸤שָׁלוֹם23⸣ שָׁלוֹם456 RTL + LTR Shlm1 ⸤Shlm23⸣ Shlm456 Hello1 ⸤Hello23⸣ Hello456 456oi7w ⸢23oi7w⸥ 1oi7w Hello1 ⸤Hello23⸣ Hello456 שָׁלוֹם1 ⸤שָׁלוֹם23⸣ שָׁלוֹם456 Hello1 ⸤Hello23⸣ Hello456 Paragraph wrapping at foreign word Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor w oi7 incididunt ut labore et dolore magna aliqua. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor שָׁלוֹם incididunt ut labore et dolore magna aliqua. Double wide a＜z n＞x a＜z א＜ת Arabic shaping ──╶╶╶─╶ ─── ─────╶ ─ ───╶──╶ الطرفية – استعمل سطر الأوامر Combining accents Shlm Hungarian accents demo oi7w Árvíztűrő tükörfúrógép שָׁלוֹם Árvíztűrő tükörfúrógép Box ┏━┓ a╔═╗z n┌─┐x ╭─╮ ┗━┛ a╚═╝z א┘─└ת ╰─╯ Box in mirrored mode ┏━┓ a╔═╗z n┌─┐x ╭─╮[?2500h ┗━┛ a╚═╝z א└─┘ת ╰─╯[?2500l ┌──────────────────┐ ──────────────────────────────┤ 2 – Implicit RTL ├────────────────────────────── └──────────────────┘ LTR + RTL Hello1 ⸤Hello23⸣ Hello456 Shlm1 ⸤Shlm23⸣ Shlm456 456oi7w ⸢23oi7w⸥ 1oi7w Hello1 ⸤Hello23⸣ Hello456 [2 kHello1 ⸤Hello23⸣ Hello456 שָׁלוֹם1 ⸤שָׁלוֹם23⸣ שָׁלוֹם456[1 k RTL + LTR Shlm1 ⸤Shlm23⸣ Shlm456 Hello1 ⸤Hello23⸣ Hello456 Hello1 ⸤Hello23⸣ Hello456 456oi7w ⸢23oi7w⸥ 1oi7w [2 kשָׁלוֹם1 ⸤שָׁלוֹם23⸣ שָׁלוֹם456 Hello1 ⸤Hello23⸣ Hello456[1 k Paragraph with wrong direction (should look broken) w Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor .incididunt ut labore et dolore magna aliqua oi7 [2 kLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor שָׁלוֹם incididunt ut labore et dolore magna aliqua.[1 k Double wide a＜z n＞x [2 kא＜ת a＜z[1 k Arabic shaping ──╶╶╶─╶ ─── ─────╶ ─ ───╶──╶ [2 kالطرفية – استعمل سطر الأوامر[1 k Old Hungarian Rovásírás (font at https://github.com/OldHungarian/old-hungarian-font) ΛᛩHTΛᛩMↄH ↄ4TH4Λↄ¤ᛝ +ΛↃ [2 k𐲛𐳖𐳇 𐲏𐳪𐳙𐳍𐳀𐳢𐳐𐳀𐳙 𐲢𐳛𐳮𐳁𐳤𐳑𐳢𐳁𐳤[1 k Combining accents Shlm Hungarian accents demo  Árvíztűrő tükörfúrógép oi7w [2 kשָׁלוֹם Árvíztűrő tükörfúrógép[1 k Box ╭─╮ a┌─┐z n╔═╗x ┏━┓[2 k ┛━┗ א╝═╚ת a└─┘z ╯─╰[1 k Box in mirrored mode ╭─╮ a┌─┐z n╔═╗x ┏━┓[2 k[?2500h ┗━┛ א╚═╝ת a└─┘z ╰─╯[?2500l[1 k ┌──────────────────────────────────┐ ──────────────────────┤ 3 – Implicit auto (LTR fallback) ├────────────────────── └──────────────────────────────────┘ LTR + RTL Hello1 ⸤Hello23⸣ Hello456 Shlm1 ⸤Shlm23⸣ Shlm456 Hello1 ⸤Hello23⸣ Hello456 456oi7w ⸢23oi7w⸥ 1oi7w [?2501hHello1 ⸤Hello23⸣ Hello456 שָׁלוֹם1 ⸤שָׁלוֹם23⸣ שָׁלוֹם456[?2501l RTL + LTR Shlm1 ⸤Shlm23⸣ Shlm456 Hello1 ⸤Hello23⸣ Hello456 Hello1 ⸤Hello23⸣ Hello456 456oi7w ⸢23oi7w⸥ 1oi7w [?2501hשָׁלוֹם1 ⸤שָׁלוֹם23⸣ שָׁלוֹם456 Hello1 ⸤Hello23⸣ Hello456[?2501l Paragraph wrapping at foreign word Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor w oi7 incididunt ut labore et dolore magna aliqua. [?2501hLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor שָׁלוֹם incididunt ut labore et dolore magna aliqua.[?2501l Arabic shaping ──╶╶╶─╶ ─── ─────╶ ─ ───╶──╶ [?2501hالطرفية – استعمل سطر الأوامر[?2501l Combining accents Shlm Hungarian accents demo  Árvíztűrő tükörfúrógép oi7w [?2501hשָׁלוֹם Árvíztűrő tükörfúrógép[?2501l Box ┏━┓ a╔═╗z n┌─┐x ╭─╮[?2501h ┗━┛ a╚═╝z א┘─└ת ╰─╯[?2501l Box in mirrored mode ┏━┓ a╔═╗z n┌─┐x ╭─╮[?2501h[?2500h ┗━┛ a╚═╝z א└─┘ת ╰─╯[?2500l[?2501l ┌──────────────────────────────────┐ ──────────────────────┤ 4 – Implicit auto (RTL fallback) ├────────────────────── └──────────────────────────────────┘ LTR + RTL Hello1 ⸤Hello23⸣ Hello456 Shlm1 ⸤Shlm23⸣ Shlm456 Hello1 ⸤Hello23⸣ Hello456 456oi7w ⸢23oi7w⸥ 1oi7w [2 k[?2501hHello1 ⸤Hello23⸣ Hello456 שָׁלוֹם1 ⸤שָׁלוֹם23⸣ שָׁלוֹם456[?2501l[1 k RTL + LTR Shlm1 ⸤Shlm23⸣ Shlm456 Hello1 ⸤Hello23⸣ Hello456 Hello1 ⸤Hello23⸣ Hello456 456oi7w ⸢23oi7w⸥ 1oi7w [2 k[?2501hשָׁלוֹם1 ⸤שָׁלוֹם23⸣ שָׁלוֹם456 Hello1 ⸤Hello23⸣ Hello456[?2501l[1 k Paragraph wrapping at foreign word Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor w oi7 incididunt ut labore et dolore magna aliqua. [2 k[?2501hLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor שָׁלוֹם incididunt ut labore et dolore magna aliqua.[?2501l[1 k Arabic shaping ──╶╶╶─╶ ─── ─────╶ ─ ───╶──╶ [2 k[?2501hالطرفية – استعمل سطر الأوامر[?2501l[1 k Combining accents Shlm Hungarian accents demo  Árvíztűrő tükörfúrógép oi7w [2 k[?2501hשָׁלוֹם Árvíztűrő tükörfúrógép[?2501l[1 k Box ╭─╮ a┌─┐z n╔═╗x ┏━┓[2 k[?2501h ┛━┗ א╝═╚ת a└─┘z ╯─╰[?2501l[1 k Box in mirrored mode ╭─╮ a┌─┐z n╔═╗x ┏━┓[2 k[?2501h[?2500h ┗━┛ א╚═╝ת a└─┘z ╰─╯[?2500l[?2501l[1 k ┌──────────────────┐ ──────────────────────────────┤ 5 – Explicit LTR ├────────────────────────────── └──────────────────┘ LTR + fake RTL ⸤Hello⸣ ⸤mlhS⸣ ⸤Hello⸣ ⸤oi7w⸣ ⸤Hello⸣ ⸤םוֹלשָׁ⸣ Fake RTL + RTL ⸤mlhS⸣ ⸤Hello⸣ ⸤oi7w⸣ ⸤Hello⸣ ⸤םוֹלשָׁ⸣ ⸤Hello⸣ Arabic shaping ──╶╶╶─╶ ─── ─────╶ ─ ───╶──╶ رماوألا رطس لمعتسا – ةيفرطلا Combining accents mlhS Hungarian accents demo oi7w Árvíztűrő tükörfúrógép םוֹלשָׁ Árvíztűrő tükörfúrógép Box ┏━┓ a╔═╗z n┌─┐x ╭─╮ ┗━┛ a╚═╝z ת└─┘א ╰─╯ Box in mirrored mode ┏━┓ a╔═╗z n┌─┐x ╭─╮[?2500h ┗━┛ a╚═╝z ת└─┘א ╰─╯[?2500l ┌──────────────────┐ ──────────────────────────────┤ 6 – Explicit RTL ├────────────────────────────── └──────────────────┘ Fake LTR + RTL ⸤olleH⸣ ⸤Shlm⸣ ⸢oi7w⸥ ⸢Hello⸥ [2 k⸤olleH⸣ ⸤שָׁלוֹם⸣[1 k RTL + fake LTR ⸤Shlm⸣ ⸤olleH⸣ ⸢Hello⸥ ⸢oi7w⸥ [2 k⸤שָׁלוֹם⸣ ⸤olleH⸣[1 k Fullwidth characters with underlines ［Ｌｏｒｅｍ ｉｐｓｕｍ ｄｏｌｏｒ ｓｉｔ ａｍｅｔ） [2 k（ｔｅｍａ ｔｉｓ ｒｏｌｏｄ ｍｕｓｐｉ ｍｅｒｏＬ］[1 k Arabic shaping ──╶╶╶─╶ ─── ─────╶ ─ ───╶──╶ [2 kالطرفية – استعمل سطر الأوامر[1 k Combining accents Shlm omed stnecca nairagnuH  Árvíztűrő tükörfúrógép oi7w [2 k[?2501hשָׁלוֹם pégórúfröküt őrűtzívrÁ[?2501l[1 k Box ╭─╮ a┌─┐z n╔═╗x ┏━┓[2 k ┛━┗ א╝═╚ת z┘─└a ╯─╰[1 k Box in mirrored mode ╭─╮ a┌─┐z n╔═╗x ┏━┓[2 k[?2500h ┗━┛ א╚═╝ת z└─┘a ╰─╯[?2500l[1 k ┌────────────────┐ ───────────────────────────────┤ 7 – Misc tests ├─────────────────────────────── └────────────────┘ Numbers inside RTL, across linebreak jumps Shalom 123 456 789 Shalom! The quick brown fox jumps over the lazy dog The quick brown fox jumps 4 123 oi7w oi7w 789 56! The quick brown fox jumps over the lazy dog The quick brown fox jumps שָׁלוֹם 123 456 789 שָׁלוֹם! Mirroring across linebreak jumps Shalom <[<[<[<[ Shalom! The quick brown fox jumps over the lazy dog The quick brown fox jumps >]>]> oi7w oi7w ]>]! The quick brown fox jumps over the lazy dog The quick brown fox jumps שָׁלוֹם <[<[<[<[ שָׁלוֹם! Attributes Hello1 Shlm23 Shlm456 Hello7890 Hello1 456oi7w 23oi7w Hello7890 Hello1 שָׁלוֹם23 שָׁלוֹם456 Hello7890 Link autodetection, overall LTR https!//he.wikipedia.org/wiki/Front_page https!//he.wikipedia.org/wiki/'wxᒣ_tiny https://he.wikipedia.org/wiki/עמוד_ראשי Link autodetection, overall LTR (should look broken) https!//he.wikipedia.org/wiki/Front_page Shalom https!//he.wikipedia.org/wiki/oi7w 'wxᒣ_tiny https://he.wikipedia.org/wiki/עמוד_ראשי שָׁלוֹם Link autodetection, overall RTL Shalom1 http!//example.com/test Shalom23  23oi7w http!//example.com/test 1oi7w [2 kשָׁלוֹם1 http://example.com/test שָׁלוֹם23[1 k Link autodetection, overall RTL (should look broken) Shalom1 http!//example.com/test/ Shalom23  23oi7w /http!//example.com/test 1oi7w [2 kשָׁלוֹם1 http://example.com/test/ שָׁלוֹם23[1 k Explicit hyperlinks Hello1 Shlm23 Shlm456 Hello7890 Hello1 456oi7w 23oi7w Hello7890 Hello1 456oi7w 23oi7w Hello7890 ]8;;http://example.com/hello123\Hello1 שָׁלוֹם23]8;;\ ]8;;http://example.com/hello4567890\שָׁלוֹם456 Hello7890]8;;\ ────────────────────────────────────────────────────────────────────────────────