diff --git a/core/tests/unit/ldml/keyboards/meson.build b/core/tests/unit/ldml/keyboards/meson.build
index fb00cddecd8..4bce343bd30 100644
--- a/core/tests/unit/ldml/keyboards/meson.build
+++ b/core/tests/unit/ldml/keyboards/meson.build
@@ -11,6 +11,7 @@ tests_from_cldr = [
   'ja-Latn',
   'pt-t-k0-abnt2',
   'fr-t-k0-azerty',
+  'pcm',
 ]
 
 tests_without_testdata = [
diff --git a/core/tests/unit/ldml/ldml_test_source.cpp b/core/tests/unit/ldml/ldml_test_source.cpp
index 673f692f1e0..507468efaa1 100644
--- a/core/tests/unit/ldml/ldml_test_source.cpp
+++ b/core/tests/unit/ldml/ldml_test_source.cpp
@@ -109,10 +109,16 @@ LdmlTestSource::parse_source_string(std::string const &s) {
     if (*p == '\\') {
       p++;
       km_kbp_usv v;
+      bool had_open_curly = false;
       assert(p != s.end());
       if (*p == 'u' || *p == 'U') {
         // Unicode value
         p++;
+        if (*p == '{') {
+          p++;
+          assert(p != s.end());
+          had_open_curly = true;
+        }
         size_t n;
         std::string s1 = s.substr(p - s.begin(), 8);
         v              = std::stoul(s1, &n, 16);
@@ -125,6 +131,12 @@ LdmlTestSource::parse_source_string(std::string const &s) {
           t += km_kbp_cp(Uni_UTF32ToSurrogate1(v));
           t += km_kbp_cp(Uni_UTF32ToSurrogate2(v));
         }
+        if (had_open_curly) {
+          p++;
+          // close what you opened
+          assert(*p == '}'); // close curly
+          assert(p != s.end());
+        }
       } else if (*p == 'd') {
         // Deadkey
         // TODO, not yet supported
@@ -146,10 +158,16 @@ LdmlTestSource::parse_u8_source_string(std::string const &u8s) {
     if (*p == '\\') {
       p++;
       km_kbp_usv v;
+      bool had_open_curly = false;
       assert(p != s.end());
       if (*p == 'u' || *p == 'U') {
         // Unicode value
         p++;
+        if (*p == '{') {
+          p++;
+          assert(p != s.end());
+          had_open_curly = true;
+        }
         size_t n;
         std::u16string s1 = s.substr(p - s.begin(), 8);
         // TODO-LDML: convert back first?
@@ -164,6 +182,12 @@ LdmlTestSource::parse_u8_source_string(std::string const &u8s) {
           t += km_kbp_cp(Uni_UTF32ToSurrogate1(v));
           t += km_kbp_cp(Uni_UTF32ToSurrogate2(v));
         }
+        if (had_open_curly) {
+          p++;
+          // close what you opened
+          assert(*p == '}'); // close curly
+          assert(p != s.end());
+        }
       } else if (*p == 'd') {
         // Deadkey
         // TODO, not yet supported
diff --git a/resources/standards-data/ldml-keyboards/techpreview/3.0/pcm.xml b/resources/standards-data/ldml-keyboards/techpreview/3.0/pcm.xml
new file mode 100644
index 00000000000..5796575ee85
--- /dev/null
+++ b/resources/standards-data/ldml-keyboards/techpreview/3.0/pcm.xml
@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE keyboard SYSTEM '../dtd/ldmlKeyboard.dtd'>
+<keyboard locale="pcm" conformsTo="techpreview">
+  <version number="1.0.0" />
+  <names>
+    <name value="Nigerian Pidgin" />
+    <name value="Naijíriá Píjin" />
+  </names>
+  <settings fallback="omit" />
+  <keys>
+    <import base="cldr" path="techpreview/keys-Zyyy-punctuation.xml" />
+    <import base="cldr" path="techpreview/keys-Zyyy-currency.xml" />
+    <key id="grave" to="\u{300}" />
+    <key id="acute" to="\u{301}" />
+
+    <!-- accented vowels -->
+    <key id="odot" to="ọ" />
+    <key id="Odot" to="Ọ" />
+    <key id="edot" to="ẹ" />
+    <key id="Edot" to="Ẹ" />
+
+    <!-- currency -->
+    <key id="naira" to="₦" />
+  </keys>
+
+  <layers form="iso">
+    <layer modifier="none">
+      <row keys="grave 1 2 3 4 5 6 7 8 9 0 hyphen equal" />
+      <row keys="acute w e r t y u i o p open-square close-square" />
+      <row keys="a s d f g h j k l odot edot slash" />
+      <row keys="slash z c v b n m comma period semi-colon apos" />
+      <row keys="space" />
+    </layer>
+
+    <layer modifier="shift">
+      <row keys="grave bang at hash dollar naira percent amp asterisk open-paren close-paren underscore plus" />
+      <row keys="acute W E R T Y U I O P open-curly close-curly" />
+      <row keys="A S D F G H J K L Odot Edot" />
+      <row keys="question Z C V B N M open-angle close-angle colon double-quote" />
+      <row keys="space" />
+    </layer>
+
+    <layer modifier="caps">
+      <row keys="grave 1 2 3 4 5 6 7 8 9 0 hyphen equal" />
+      <row keys="acute W E R T Y U I O P open-square close-square" />
+      <row keys="A S D F G H J K L Odot Edot slash" />
+      <row keys="slash Z C V B N M comma period semi-colon apos" />
+      <row keys="space" />
+    </layer>
+
+  </layers>
+
+  <transforms type="simple">
+    <transformGroup>
+      <transform from="''" to="\u{323}" /> <!-- Quick way to add dot below -->
+    </transformGroup>
+  </transforms>
+</keyboard>
diff --git a/resources/standards-data/ldml-keyboards/techpreview/test/pcm-test.xml b/resources/standards-data/ldml-keyboards/techpreview/test/pcm-test.xml
new file mode 100644
index 00000000000..88fc500091e
--- /dev/null
+++ b/resources/standards-data/ldml-keyboards/techpreview/test/pcm-test.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE keyboardTest SYSTEM "../dtd/ldmlKeyboardTest.dtd">
+<keyboardTest conformsTo="techpreview">
+  <info keyboard="pcm.xml" author="Team Keyboard" name="pcm-test" />
+  <repertoire name="simple-repertoire" chars="[a b c d e ọ Ọ ẹ Ẹ ₦]" type="simple" />
+  <tests name="key-tests">
+    <test name="abc-test">
+      <startContext to="abc" />
+      <keystroke key="d" />
+      <check result="abcd" />
+    </test>
+    <test name="dot-below-test">
+      <startContext to="" />
+      <keystroke key="e" />
+      <keystroke key="apos" />
+      <check result="e'" />
+      <keystroke key="apos" />
+      <check result="e\u{323}" />
+    </test>
+  </tests>
+</keyboardTest>