Khmer: Below base matras joining improperly

[Amritasingh0512]

Font Used: Khmer UI

Text:

ឃ្ល្សុះ ឃ្ល្សេះ ឃ្ល្សោះ ស្រ្តឺ ស្រ្តុ ស្រ្តូ ស្រ្តួ ញ្ញុ ញ្ញូ ញ្ញួ

[ebraminio]

Confirmed the difference

$ build/util/hb-shape khmerui.ttf -u U+1783,U+17D2,U+179B,U+17D2,U+179F,U+17BB,U+17C7,U+0020,U+1783,U+17D2,U+179B,U+17D2,U+179F,U+17C1,U+17C7,U+0020,U+1783,U+17D2,U+179B,U+17D2,U+179F,U+17C4,U+17C7,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BA,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BB,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BC,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BD,U+0020,U+1789,U+17D2,U+1789,U+17BB,U+0020,U+1789,U+17D2,U+1789,U+17BC,U+0020,U+1789,U+17D2,U+1789,U+17BD --shaper=coretext

[uni1783=0+1130|uni179B.sub2=0@0,-10+745|uni179F.sub1=2+-525|uni17BB.alt1=4+1050|uni17C7=4+766|space=7+561|uni17C1=8+750|uni1783=8+1130|uni179B.sub2=8@0,-10+745|uni179F.sub1=10+525|uni17C7=12+766|space=15+561|uni17C1=16+750|uni1783=16+1130|uni179B.sub2=16@0,-10+745|uni179F17B6.sub1=18+1198|uni17C7=20+766|space=23+561|uni179A.sub1=24+525|uni179F=24+1875|uni25CC=26+1273|uni178F.sub1=26+0|uni17BA=28+0|space=30+561|uni179A.sub1=31+525|uni179F=31+1875|uni25CC=33+1273|uni178F.sub1=33+0|uni17BB.alt1=35+0|space=37+561|uni179A.sub1=38+525|uni179F=38+1875|uni25CC=40+1273|uni178F.sub1=40+210|uni17BC.alt1=42+-210|space=44+561|uni179A.sub1=45+525|uni179F=45+1875|uni25CC=47+1273|uni178F.sub1=47+0|uni17BD.alt1=49+0|space=51+561|uni1789.alt=52+1115|uni1789.sub2=52+450|uni17BB.alt2=54+310|space=56+561|uni1789=57+1875|uni17D2=57+0|uni17891787179B=59+1875|space=61+561|uni1789.alt=62+1115|uni1789.sub2=62+930|uni17BD.alt2=64+-170]

$ build/util/hb-shape khmerui.ttf -u U+1783,U+17D2,U+179B,U+17D2,U+179F,U+17BB,U+17C7,U+0020,U+1783,U+17D2,U+179B,U+17D2,U+179F,U+17C1,U+17C7,U+0020,U+1783,U+17D2,U+179B,U+17D2,U+179F,U+17C4,U+17C7,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BA,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BB,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BC,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BD,U+0020,U+1789,U+17D2,U+1789,U+17BB,U+0020,U+1789,U+17D2,U+1789,U+17BC,U+0020,U+1789,U+17D2,U+1789,U+17BD --shaper=ot

[uni1783=0+1875|uni179B.sub2=0@-745,-10+0|uni179F.sub1=0+525|uni17BB.alt1=0@-1050,0+0|uni17C7=0+766|space=7+561|uni17C1=8+750|uni1783=8+1875|uni179B.sub2=8@-745,-10+0|uni179F.sub1=8+525|uni17C7=8+766|space=15+561|uni17C1=16+750|uni1783=16+1875|uni179B.sub2=16@-745,-10+0|uni179F17B6.sub1=16+1198|uni17C7=16+766|space=23+561|uni179A.sub2=24+525|uni179F=24+1875|uni178F.sub1=24@-370,0+0|uni17BA=24+0|space=30+561|uni179A.sub2=31+525|uni179F=31+1875|uni178F.sub1=31@-370,0+0|uni17BB.alt1=31+0|space=37+561|uni179A.sub2=38+525|uni179F=38+1875|uni178F.sub1=38@-370,0+0|uni17BC.alt1=38@-175,-10+0|space=44+561|uni179A.sub2=45+525|uni179F=45+1875|uni178F.sub1=45@-370,0+0|uni17BD.alt1=45@-695,-10+0|space=51+561|uni1789.alt=52+1875|uni1789.sub2=52@-760,0+0|uni17BB.alt2=52@-310,0+0|space=56+561|uni1789=57+1875|uni17D2=57+0|uni17891787179B=59+1875|space=61+561|uni1789.alt=62+1875|uni1789.sub2=62@-760,0+0|uni17BD.alt2=62@170,0+0]

$ WINEDLLOVERRIDES="usp10=n" wine winbuild/util/hb-shape.exe khmerui.ttf -u U+1783,U+17D2,U+179B,U+17D2,U+179F,U+17BB,U+17C7,U+0020,U+1783,U+17D2,U+179B,U+17D2,U+179F,U+17C1,U+17C7,U+0020,U+1783,U+17D2,U+179B,U+17D2,U+179F,U+17C4,U+17C7,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BA,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BB,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BC,U+0020,U+179F,U+17D2,U+179A,U+17D2,U+178F,U+17BD,U+0020,U+1789,U+17D2,U+1789,U+17BB,U+0020,U+1789,U+17D2,U+1789,U+17BC,U+0020,U+1789,U+17D2,U+1789,U+17BD --shaper=uniscribe

[uni1783=0+1875|uni179B.sub1=0@-355,-10+0|uni179F.sub2=0+525|uni17BB.alt1=0+0|uni17C7=0+766|space=7+561|uni17C1=8+750|uni1783=8+1875|uni179B.sub1=8@-355,-10+0|uni179F.sub2=8+525|uni17C7=8+766|space=15+561|uni17C1=16+750|uni1783=16+1875|uni179B.sub1=16@-355,-10+0|uni179F17B6.sub2=16+1198|uni17C7=16+766|space=23+561|uni179A.sub2=24+525|uni179F=24+1875|uni178F.sub1=24@-370,0+0|uni17BA=24+0|space=30+561|uni179A.sub1=31+525|uni179F=31+1875|uni178F.sub2=31@-410,0+0|uni17BB.alt2=31@40,0+0|space=37+561|uni179A.sub1=38+525|uni179F=38+1875|uni178F.sub2=38@-410,0+0|uni17BC.alt2=38@730,0+0|space=44+561|uni179A.sub1=45+525|uni179F=45+1875|uni178F.sub2=45@-410,0+0|uni17BD.alt2=45@520,0+0|space=51+561|uni1789.alt=52+1875|uni1789.sub2=52@-760,0+0|uni17BB.alt2=52@-310,0+0|space=56+561|uni1789.alt=57+1875|uni1789.sub2=57@-760,0+0|uni17BC.alt2=57@170,0+0|space=61+561|uni1789.alt=62+1875|uni1789.sub2=62@-760,0+0|uni17BD.alt2=62@170,0+0]

[olivierberten]

Same remark as #972 and #973 for the 2nd line of clusters.

[behdad]

Fixed.