From 35f9dfe2f407a33d240678ae64f7a2b972142872 Mon Sep 17 00:00:00 2001
From: Lukas Hollaender <lukas.hollaender@yworks.com>
Date: Fri, 17 Jul 2020 15:45:06 +0200
Subject: [PATCH] fix rounded rects when either rx or ry is omitted

- when rx===ry===0 write a regular rect instead of a rounded rect with 0 radius

fixes #82
---
 src/nodes/rect.ts                             |  51 ++++++++++--------
 test/common/tests.js                          |   1 +
 .../attribute-style-precedence/reference.pdf  | Bin 3275 -> 3149 bytes
 test/specs/clippath-svg/reference.pdf         | Bin 5318 -> 3933 bytes
 test/specs/clippath/reference.pdf             | Bin 6864 -> 6050 bytes
 test/specs/complete-bpmn/reference.pdf        | Bin 59436 -> 49339 bytes
 .../complete-computer-network/reference.pdf   | Bin 120160 -> 116079 bytes
 test/specs/complete-diagram1/reference.pdf    | Bin 15511 -> 15287 bytes
 test/specs/complete-diagram2/reference.pdf    | Bin 579115 -> 575897 bytes
 test/specs/complete-flowchart1/reference.pdf  | Bin 17779 -> 14316 bytes
 test/specs/complete-movies/reference.pdf      | Bin 22437 -> 21920 bytes
 .../reference.pdf                             | Bin 14857 -> 14632 bytes
 .../complete-social-network/reference.pdf     | Bin 211172 -> 196272 bytes
 .../reference.pdf                             | Bin 3928 -> 3578 bytes
 .../fill-and-stroke-inheritance/reference.pdf | Bin 3691 -> 3355 bytes
 .../fill-and-stroke-opacity/reference.pdf     | Bin 4250 -> 3732 bytes
 test/specs/fill-and-stroke-rgba/reference.pdf | Bin 3664 -> 3412 bytes
 .../reference.pdf                             | Bin 4594 -> 4335 bytes
 .../gradient-percent-offset/reference.pdf     | Bin 4594 -> 4335 bytes
 test/specs/gradient-units/reference.pdf       | Bin 4922 -> 4698 bytes
 .../reference.pdf                             | Bin 7734 -> 6469 bytes
 test/specs/hidden-clippath/reference.pdf      | Bin 3466 -> 3240 bytes
 test/specs/image-svg-urls/reference.pdf       | Bin 4699 -> 4262 bytes
 test/specs/opacity-and-rgba/reference.pdf     | Bin 4621 -> 4090 bytes
 test/specs/pattern-units/reference.pdf        | Bin 15272 -> 13443 bytes
 test/specs/patterns/reference.pdf             | Bin 6732 -> 6532 bytes
 test/specs/rect/reference.pdf                 | Bin 0 -> 4293 bytes
 test/specs/rect/spec.svg                      |  13 +++++
 test/specs/references/reference.pdf           | Bin 9281 -> 8276 bytes
 test/specs/remote-images/reference.pdf        | Bin 14351 -> 14239 bytes
 test/specs/symbols/reference.pdf              | Bin 20678 -> 20444 bytes
 test/specs/transforms-parsing/reference.pdf   | Bin 6330 -> 4740 bytes
 .../url-references-with-quotes/reference.pdf  | Bin 4312 -> 3933 bytes
 test/specs/zero-width-strokes/reference.pdf   | Bin 3314 -> 3174 bytes
 34 files changed, 43 insertions(+), 22 deletions(-)
 create mode 100644 test/specs/rect/reference.pdf
 create mode 100644 test/specs/rect/spec.svg

diff --git a/src/nodes/rect.ts b/src/nodes/rect.ts
index 1e3770c6..1e91a28a 100644
--- a/src/nodes/rect.ts
+++ b/src/nodes/rect.ts
@@ -16,29 +16,36 @@ export class Rect extends GeometryNode {
     if (!isFinite(w) || w <= 0 || !isFinite(h) || h <= 0) {
       return null
     }
-    const MyArc = (4 / 3) * (Math.SQRT2 - 1),
-      rx = Math.min(
-        parseFloat(getAttribute(this.element, context.styleSheets, 'rx') || '0'),
-        w * 0.5
-      ),
-      ry = Math.min(
-        parseFloat(getAttribute(this.element, context.styleSheets, 'ry') || '0'),
-        h * 0.5
-      )
-    let x = parseFloat(getAttribute(this.element, context.styleSheets, 'x') || '0'),
-      y = parseFloat(getAttribute(this.element, context.styleSheets, 'y') || '0')
 
-    return new Path()
-      .moveTo((x += rx), y)
-      .lineTo((x += w - 2 * rx), y)
-      .curveTo(x + rx * MyArc, y, x + rx, y + (ry - ry * MyArc), (x += rx), (y += ry))
-      .lineTo(x, (y += h - 2 * ry))
-      .curveTo(x, y + ry * MyArc, x - rx * MyArc, y + ry, (x -= rx), (y += ry))
-      .lineTo((x += -w + 2 * rx), y)
-      .curveTo(x - rx * MyArc, y, x - rx, y - ry * MyArc, (x -= rx), (y -= ry))
-      .lineTo(x, (y += -h + 2 * ry))
-      .curveTo(x, y - ry * MyArc, x + rx * MyArc, y - ry, (x += rx), (y -= ry))
-      .close()
+    const rxAttr = getAttribute(this.element, context.styleSheets, 'rx')
+    const ryAttr = getAttribute(this.element, context.styleSheets, 'ry')
+    const rx = Math.min(parseFloat(rxAttr || ryAttr || '0'), w * 0.5)
+    const ry = Math.min(parseFloat(ryAttr || rxAttr || '0'), h * 0.5)
+
+    let x = parseFloat(getAttribute(this.element, context.styleSheets, 'x') || '0')
+    let y = parseFloat(getAttribute(this.element, context.styleSheets, 'y') || '0')
+
+    const arc = (4 / 3) * (Math.SQRT2 - 1)
+    if (rx === 0 && ry === 0) {
+      return new Path()
+        .moveTo(x, y)
+        .lineTo(x + w, y)
+        .lineTo(x + w, y + h)
+        .lineTo(x, y + h)
+        .close()
+    } else {
+      return new Path()
+        .moveTo((x += rx), y)
+        .lineTo((x += w - 2 * rx), y)
+        .curveTo(x + rx * arc, y, x + rx, y + (ry - ry * arc), (x += rx), (y += ry))
+        .lineTo(x, (y += h - 2 * ry))
+        .curveTo(x, y + ry * arc, x - rx * arc, y + ry, (x -= rx), (y += ry))
+        .lineTo((x += -w + 2 * rx), y)
+        .curveTo(x - rx * arc, y, x - rx, y - ry * arc, (x -= rx), (y -= ry))
+        .lineTo(x, (y += -h + 2 * ry))
+        .curveTo(x, y - ry * arc, x + rx * arc, y - ry, (x += rx), (y -= ry))
+        .close()
+    }
   }
 
   protected computeNodeTransformCore(context: Context): Matrix {
diff --git a/test/common/tests.js b/test/common/tests.js
index 9c88b7f4..44579d37 100644
--- a/test/common/tests.js
+++ b/test/common/tests.js
@@ -36,6 +36,7 @@ window.tests = [
   'pattern-units',
   'patterns',
   'polyline',
+  'rect',
   'references',
   'remote-images',
   'strokes-and-bounding-boxes',
diff --git a/test/specs/attribute-style-precedence/reference.pdf b/test/specs/attribute-style-precedence/reference.pdf
index 78a388b24bfc22898db64be1fbbbe3d1a657b728..8c4fc8b3fd9f47d16a71be1622b77321b142b36c 100644
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diff --git a/test/specs/clippath-svg/reference.pdf b/test/specs/clippath-svg/reference.pdf
index b2b71c2643b23b4332badbcf9d29683e68dc46a9..afaf2ced1a39df7894d2a140066391bd31935d4f 100644
GIT binary patch
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diff --git a/test/specs/complete-bpmn/reference.pdf b/test/specs/complete-bpmn/reference.pdf
index 73d099050eef9e5b5f600f0eaa55764d3824772c..1f03e922bc9d06b210938ccc8462d6b66b4b990c 100644
GIT binary patch
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diff --git a/test/specs/complete-computer-network/reference.pdf b/test/specs/complete-computer-network/reference.pdf
index 3f37fc61fbefd3e4edaead94104ca2036334b12c..246e3055f2f4de5d66feb1b9fb5efa8ed0439631 100644
GIT binary patch
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diff --git a/test/specs/complete-diagram1/reference.pdf b/test/specs/complete-diagram1/reference.pdf
index 6b1c2fdab9d0d3056f813a85e53b34d428d0f5c0..7154491cdf4e72a4405a2b8c6ba2f9488229d61e 100644
GIT binary patch
delta 482
zcmZXQu?oUK42BUw^jtbQcX5^El3aV@s;jH3gM&~UiXh_9!A%e<4ubFC<lrOtT3Ra<
zayR6{clrP1a@)Ul<+%-%UdmI%0HZiF-%w}Id+X7OEW1Cgv*){ez=1`Kp*r!#{BC3v
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vTcL0NW+!0vE*QisB|{n@wA!E9u@;InRoi^I&Q`g(_9w@l6E?%)bUyn4=iX#G

delta 708
zcmah_y-I^I6r~iD<^i0)rHg{({^TaX*{(iA`EU@5LlIOQzQIipDjj?Zrw)B2U!zId
zl5!&$LeAmj+;eZTeg1x3eU4G^YxObM>(1G9oM3N?!dYIN@TykUn`AmTk4$6nl&o~9
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diff --git a/test/specs/complete-diagram2/reference.pdf b/test/specs/complete-diagram2/reference.pdf
index 29c9bd54ca041769992fc9eae2833dbfcb07aaa3..ebb31b69b5000b75026bef44b9ea4e02d6220420 100644
GIT binary patch
delta 980
zcmZ3zMtSCB<q1n!jLeLTHm=lQ6f`o_GgZjpG60eg=H>*ZRak^4Cop+!e#}zFDPm*+
zQk=u33)TbSOfD3$o@~W$Ir%WZFk{Z-Zc*vU3Vf`SEd`zk85$#0L)eoAg%u{>7My`y
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delta 3439
zcmd5;O=#3W7-hG$jgh+Dx@D1iSS@9H*rt<7CNrUj>OsXq=~1kgYV;s3LQ4<cQczs9
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diff --git a/test/specs/complete-flowchart1/reference.pdf b/test/specs/complete-flowchart1/reference.pdf
index 2b27ec39538bd42cd4703e608a2802e4c3fad242..e76988775d2c7135a08354d46f137ba6d582a88d 100644
GIT binary patch
delta 819
zcmZ{gyGjF55Qf<#-cAuAao3H;WxXV7koDYl&u(i}(uogXp&}Sq6oYnRKs&WirVzUn
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delta 2296
zcmd5+J!lj`6lQPl6t;-#CO5muop=hDGl7Ji-JSixR0*+-0Z}V|SOkT`keE)%DWafQ
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diff --git a/test/specs/complete-movies/reference.pdf b/test/specs/complete-movies/reference.pdf
index a3cd203af41a2dd64646807082ee6399804a0976..7edaaad599c47265a55dc4caf410fb2077d599b3 100644
GIT binary patch
delta 215
zcmZ3wo^ioy#ti~i%tq!0n}w~InI})M6%*7mGcdJ829x`3#U}4}<=C8HzfF|Iz|6vU
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delta 416
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diff --git a/test/specs/complete-organization-chart-new/reference.pdf b/test/specs/complete-organization-chart-new/reference.pdf
index cecc415c584287d80eb755abbcab6c08574473c7..e7aec9e5e904faae18e640ac80b2d4c38d713995 100644
GIT binary patch
delta 482
zcmZXQzX}2|48~EnPEO9Z+$w3(rj5I<PR`=sARG?It#aTd4k`z}f#B|2_*C8><h1S3
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delta 725
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diff --git a/test/specs/complete-social-network/reference.pdf b/test/specs/complete-social-network/reference.pdf
index 03ebce80a6443aad03fd3f4fd6328928c9f26215..82e2ed0ae38674b60d2e64a2c94f0538cb2b5116 100644
GIT binary patch
delta 5936
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delta 22743
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diff --git a/test/specs/display-none-and-visibility-inheritance/reference.pdf b/test/specs/display-none-and-visibility-inheritance/reference.pdf
index 4dcaca8cc57b4f4565a74fe68f0d3031e37781a4..9a06e6e8376c8d84100aacfcafad4aad67b37eac 100644
GIT binary patch
delta 410
zcmca1_e*+0H<PL5#NKWJQv(A%g&Zy*0bxy^!RRJn2p5E~CdV<k2|)!7jeu$)?9C?3
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ZjP6(?OT)>#`KE9h7#VS?s=E5S0RYy)Q`-Ol

delta 746
zcmah_K}y9i5G8KJpiA9+kRp6=CCN;hCR@R7J%OuiKOVsz;3FvYCSJf(h-Y!-bbi{D
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diff --git a/test/specs/fill-and-stroke-inheritance/reference.pdf b/test/specs/fill-and-stroke-inheritance/reference.pdf
index 1fec3f18faa375d2c20ab961cde53f4579ec39ea..b61ce492bf77241a3b9bcdb648e63b7de54cf8ea 100644
GIT binary patch
delta 410
zcmaDYGh1pxH?y(1@x;F60)_?#dI~vQKmx*=yp_=pQ?QxI7ejD!0JAWsn5l`0f&mC9
z<Z*#%10!QI!^xFAX7y$UhG<d-=0;}dLKdbNLY5YmXsQeiF*F()nP8|gHn%`%tOq;C
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delta 748
zcmbO&^;%{^H?z5c<;1?_^#*zhh6X?aiB9GMi-3t7BsM}6!Aj<WY0QDMU?MOYtOm#d
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diff --git a/test/specs/fill-and-stroke-opacity/reference.pdf b/test/specs/fill-and-stroke-opacity/reference.pdf
index 01e0c3c3432d5e00182d4c0dbfd48322622dc8a6..d2287b79797ed2f3f097d7d6aae0230d54ecaac5 100644
GIT binary patch
delta 528
zcmZXRy$ZrG5XbRjX$P^BlTe4Qa=BcR<^gmSI=eVH2*p9%9dr{!iIa#gp)cdx*cz#D
z$&g%rxsU%{Zlmk)eC&{sm(wE=0OPcbvD&@qUaca*`tGSW-Mw8Tk{aqwcjy!e>4tjq
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Oe;-x99cS5OHvItN^=$9}

delta 1034
zcmZXRu}Z{15QZ_=m>^a{Dj^ov%Fb@G*+neXQtk?SSrmlB;;>I)DTop)3-KL%8sEmu
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b)4+72r|s>-=5E{XA3o<6T(MkUTwneH=6J`z

diff --git a/test/specs/fill-and-stroke-rgba/reference.pdf b/test/specs/fill-and-stroke-rgba/reference.pdf
index 8185214b020f1d88ee8c64353683928a461faed4..ce049bdb62537883bab88e422d368604103bd0c7 100644
GIT binary patch
delta 397
zcmZWkD-Oa?5DcJrDWV2J5Eayt-Fe?i1XvP|fF@i4han-rvxEa+=|K=2h?W|%Z^eFQ
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Ufz&=cn^=!-3W0+v%jJ6Y1&Ci#Jpcdz

delta 675
zcmZXPziz@X5XOa=FwCt~F=T+Xy*tN_ErpS;mD(q$q7F!?1M0+*tqW3BlpXO7ya)pi
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AHvj+t

diff --git a/test/specs/gradient-default-coordinates/reference.pdf b/test/specs/gradient-default-coordinates/reference.pdf
index 75334dc7382475eac0e86a735f99c405bd19f8a0..c12da9921683d09f75ecc2dbd349ea216743411a 100644
GIT binary patch
delta 485
zcmeyQ{9bWFH?y&!(Zs$^0Yd{lg&ZyrX$WRcp2s9N`7ooappg+=2EtrCkBL{z#KKs?
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AZU6uP

delta 746
zcmZXQ&q@O^5XM<Nxlr|FZ)HV#mC5AKBoDA&eFoWj5K0fF_XTev6lIS+`UF0i;1js{
zvrRi$$mYkFZ)U#a_wMih^W#F3_}ahs@X!e1f2YvZQS;*ZgtMAy^iHLtb;1&oFLv~{
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H`}Ft^dTf&c

diff --git a/test/specs/gradient-percent-offset/reference.pdf b/test/specs/gradient-percent-offset/reference.pdf
index cf272e43b8468175ddf9c82cca5c520db21c706c..820b3940b76d49356ab37d494568d7f915d57f80 100644
GIT binary patch
delta 485
zcmeyQ{9bWFH?y&!(Zs$^0Yd{lg&ZyrX$WRcp2s9N`7ooappg+=2EtrCkBL{z#KKs?
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AZU6uP

delta 746
zcmZXQ&q@O^5XM<Nxlr|FZ)HV#mC5AKBoDA&eFoWj5K0fF_XTev6lIS+`UF0i;1js{
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diff --git a/test/specs/gradient-units/reference.pdf b/test/specs/gradient-units/reference.pdf
index 8ccb7b82e8d6f50bda4a80b9bed96ce621269d00..4f91f7ac9861c60cb2ae87da00eb9caba2cff8d8 100644
GIT binary patch
delta 462
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delta 718
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diff --git a/test/specs/gradients-and-patterns-mixed/reference.pdf b/test/specs/gradients-and-patterns-mixed/reference.pdf
index 2468a7b825981382a232133d2856a641604be599..5f4e80f1d598749ddc4f990936de5e16118c3d5d 100644
GIT binary patch
delta 740
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literal 7734
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diff --git a/test/specs/hidden-clippath/reference.pdf b/test/specs/hidden-clippath/reference.pdf
index fdd00dac3db9bc3e6fb109289ad755a48878339d..acb57111d0ce9472fd8c82a29f412e6c4bc51f7c 100644
GIT binary patch
delta 397
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delta 625
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diff --git a/test/specs/image-svg-urls/reference.pdf b/test/specs/image-svg-urls/reference.pdf
index 8cc0ecbabcb2f79146eebf5506ce792a622c4bed..4bdddb2f894bddac23d3563ae1c03c692812c556 100644
GIT binary patch
delta 493
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delta 947
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diff --git a/test/specs/opacity-and-rgba/reference.pdf b/test/specs/opacity-and-rgba/reference.pdf
index 66502a50e6bf45d6b5dbd9612d2383279678f882..cecb790a77b993c8e59111703c4c4d642457b060 100644
GIT binary patch
delta 516
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diff --git a/test/specs/pattern-units/reference.pdf b/test/specs/pattern-units/reference.pdf
index 051c99c648fa593123999e6f51272f2c879357e0..b7d2c6c2747147f799512d74a3a5e8f28d407fd7 100644
GIT binary patch
delta 1188
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diff --git a/test/specs/patterns/reference.pdf b/test/specs/patterns/reference.pdf
index 5e2c74e66ff83c798e1a5a5f5e5ebb233b8a1643..f2ce50d303d0745b9088c6163efe5d70c71154e2 100644
GIT binary patch
delta 533
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delta 759
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diff --git a/test/specs/rect/reference.pdf b/test/specs/rect/reference.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..742e90c099e21540a83272108fc1186f021ceb0e
GIT binary patch
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literal 0
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diff --git a/test/specs/rect/spec.svg b/test/specs/rect/spec.svg
new file mode 100644
index 00000000..b25c4b17
--- /dev/null
+++ b/test/specs/rect/spec.svg
@@ -0,0 +1,13 @@
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+  <rect/>
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+  <rect height="0"/>
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+  <rect height="100"/>
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diff --git a/test/specs/references/reference.pdf b/test/specs/references/reference.pdf
index dccb3c452a220836576a70a47f779118eb286fe8..8e9f6b7bd1226d1406b3e979ee33029bdc163c43 100644
GIT binary patch
delta 893
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diff --git a/test/specs/remote-images/reference.pdf b/test/specs/remote-images/reference.pdf
index 067beb353b2840bb991b918bff683cbcbb751ea0..d26623bb289ca2a3446a0476e2099c0e619146fa 100644
GIT binary patch
delta 395
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delta 508
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diff --git a/test/specs/symbols/reference.pdf b/test/specs/symbols/reference.pdf
index 02ca1d82525ec04fa42a078e4bf4a5a6f5488196..a1408f3b96308d9caa7e637ba6113a3e8b20f4b5 100644
GIT binary patch
delta 102
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delta 344
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diff --git a/test/specs/transforms-parsing/reference.pdf b/test/specs/transforms-parsing/reference.pdf
index cdb8e71d051abbdd955c572a143c064d7a103137..175aaf39898b5f0353349c567d437bfadf660e90 100644
GIT binary patch
delta 710
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diff --git a/test/specs/url-references-with-quotes/reference.pdf b/test/specs/url-references-with-quotes/reference.pdf
index fc86a160e236c8c6fbf36c10d43a09daf5e77056..d7d131b49504ec79c774c032a06843e64702a3c8 100644
GIT binary patch
delta 440
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delta 823
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diff --git a/test/specs/zero-width-strokes/reference.pdf b/test/specs/zero-width-strokes/reference.pdf
index 4b0bdbbba0089f9015b93dd0441df7f85970400b..f6f7042a00f0f102f8ab71980089abe88fe4847c 100644
GIT binary patch
delta 365
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delta 506
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