diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e45489f..1091441 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,7 +40,7 @@ env:
   # `em++`'s C compiler is `emcc` and not `em` (a C translation unit in the
   # conformance suite does not compile without that), and the wasm target rows
   # resolve the emsdk payload.
-  MCPP_VERSION: 2026.9.12.2
+  MCPP_VERSION: 2026.9.18.3
   XLINGS_VERSION: v2026.8.17.2
   XLINGS_NON_INTERACTIVE: '1'
 
@@ -189,24 +189,32 @@ jobs:
           work="$RUNNER_TEMP/absent"
           rm -rf "$work"; mkdir -p "$work/src"
           impl="$(pwd)"
-          # BOTH DEPENDENCIES NAMED THE SAME WAY, and this step therefore runs
-          # BEFORE the manifest is pointed at the specification's working tree.
-          # mcpp refuses a graph in which one package reaches `openkal` by path
-          # and another by version -- measured:
+          # BOTH DEPENDENCIES NAMED THE SAME WAY. mcpp refuses a graph in
+          # which one package reaches `openkal` by path and another by version
+          # -- measured:
           #
           #   error: dependency 'mcpplibs.openkal' is requested as both a path
           #          dep (by 'absent') and a version dep (by
           #          'mcpplibs.openkal-emscripten@path'). Pick one.
           #
-          # so the consumer uses the version this implementation's committed
-          # manifest names, which is the arrangement an ordinary consumer has.
+          # AND BOTH NAME THE WORKING TREE RATHER THAN A PUBLISHED VERSION.
+          # They named the version this implementation's manifest asks for,
+          # which is the arrangement an ordinary consumer has --- and which
+          # made this step unrunnable during the release it is part of: a
+          # branch that raises the version asks the index for one that is not
+          # registered yet, and the step then reports "the build did not fail
+          # naming kal_process_spawn" for a build that never started. What this
+          # step asserts is a property of the two trees, so it takes the trees.
+          sed 's|^openkal = .*$|openkal = { path = "'"$impl"'/.spec" }|' \
+              "$impl/mcpp.toml" > "$impl/mcpp.toml.next"
+          mv "$impl/mcpp.toml.next" "$impl/mcpp.toml"
           cat > "$work/mcpp.toml" << TOML
           [package]
           name = "absent"
           version = "0.1.0"
 
           [dependencies]
-          openkal = "$(grep -oP '^openkal = "\K[0-9.]+' "$impl/mcpp.toml")"
+          openkal = { path = "$impl/.spec" }
           openkal-emscripten = { path = "$impl" }
           TOML
           cat > "$work/src/main.cpp" << 'CPP'
diff --git a/README.md b/README.md
index d86914c..0154eb9 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ So the interface is carried by a feature:
 
 ```toml
 [dependencies]
-openkal-emscripten = { version = "0.2.0", features = ["threads"] }
+openkal-emscripten = { version = "0.3.0", features = ["threads"] }
 ```
 
 Without it, `src/threads/task.cpp` compiles to nothing, the eight `kal_task_*`
@@ -143,10 +143,10 @@ implementation in its source:
 
 ```toml
 [dependencies]
-openkal = "0.13.0"
+openkal = "0.14.0"
 
 [target.'cfg(os = "emscripten")'.dependencies]
-openkal-emscripten = "0.2.0"
+openkal-emscripten = "0.3.0"
 ```
 
 ## Licence
diff --git a/mcpp.toml b/mcpp.toml
index 5fc8b79..bb02995 100644
--- a/mcpp.toml
+++ b/mcpp.toml
@@ -1,7 +1,7 @@
 [package]
 namespace   = "mcpplibs"
 name        = "openkal-emscripten"
-version     = "0.2.0"
+version     = "0.3.0"
 description = "An implementation of openkal for Emscripten, written ABOVE a C library rather than beneath one, because on this platform there is no kernel to issue calls to."
 license     = "Apache-2.0"
 
@@ -18,7 +18,7 @@ authors     = ["mcpplibs"]
 repo        = "https://github.com/mcpplibs/openkal-emscripten"
 
 [dependencies]
-openkal = "0.13.0"
+openkal = "0.14.0"
 
 [build]
 # THE DIALECT FLAGS ARE THE SAME AS EVERY OTHER IMPLEMENTATION'S AND THE REASON
diff --git a/src/terminal.cpp b/src/terminal.cpp
index 65e910b..ed07eaf 100644
--- a/src/terminal.cpp
+++ b/src/terminal.cpp
@@ -29,6 +29,15 @@ int kal_terminal_get_mode(kal_stream s, kal_uintptr* mode) {
     kal_uintptr m = 0;
     if ((t.c_lflag & ICANON) != 0) m |= KAL_TERM_LINE_EDIT;
     if ((t.c_lflag & ECHO)   != 0) m |= KAL_TERM_ECHO;
+    // KAL_TERM_PASS_CONTROL IS READ FROM THREE FLAGS AND NOT FROM ISIG. The
+    // position states that the environment reserves NO keystroke, so it is set
+    // only where every mechanism by which this environment reserves one is off:
+    // ISIG for the interrupt and its neighbours, IXON for the pair that stops
+    // and starts output, IEXTEN for the one that takes the next keystroke
+    // literally. Under node these are the host's own; in a browser there is no
+    // terminal and the property word says so before any of this is reached.
+    if ((t.c_lflag & (ISIG | IEXTEN)) == 0 &&
+        (t.c_iflag & IXON) == 0)   m |= KAL_TERM_PASS_CONTROL;
     *mode = m;
     return kal_ok;
 }
@@ -37,12 +46,37 @@ int kal_terminal_set_mode(kal_stream s, kal_uintptr mode) {
     struct termios t{};
     const int fd = static_cast<int>(s.h);
     if (::tcgetattr(fd, &t) != 0) return oke::last();
-    // READ, MODIFY, WRITE, AND ONLY THE TWO BITS openkal NAMES. A mode
+    const bool reserved_none = (t.c_lflag & (ISIG | IEXTEN)) == 0 &&
+                               (t.c_iflag & IXON) == 0;
+    // READ, MODIFY, WRITE, AND ONLY THE POSITIONS openkal NAMES. A mode
     // composed from scratch would silently reset every other attribute of the
-    // terminal -- flow control, the special characters, the baud rate -- none
-    // of which this interface claims to own.
+    // terminal -- the special characters, the baud rate -- none of which this
+    // interface claims to own.
     if (mode & KAL_TERM_LINE_EDIT) t.c_lflag |=  ICANON; else t.c_lflag &= ~ICANON;
     if (mode & KAL_TERM_ECHO)      t.c_lflag |=  ECHO;   else t.c_lflag &= ~ECHO;
+
+    // A POSITION WHOSE REQUESTED VALUE IS THE ONE IN EFFECT IS NOT WRITTEN.
+    // This one stands for three flags, so establishing it again would settle
+    // two mechanisms the caller never asked about.
+    if (((mode & KAL_TERM_PASS_CONTROL) != 0) != reserved_none) {
+        if (mode & KAL_TERM_PASS_CONTROL) {
+            t.c_lflag &= ~(ISIG | IEXTEN);
+            t.c_iflag &= ~IXON;
+        } else {
+            t.c_lflag |=  (ISIG | IEXTEN);
+            t.c_iflag |=   IXON;
+        }
+    }
+
+    // AND A MODE IS NOT A WAY TO END THE INPUT. With line assembly off, how
+    // long a read waits is decided by VMIN and VTIME, and a terminal left at
+    // VMIN=0 makes `kal_stream_read' report zero --- which clause 7.4 says
+    // denotes the end of the input. A caller that wants a read which gives up
+    // asks `kal_timeout_read' for one.
+    if ((mode & KAL_TERM_LINE_EDIT) == 0) {
+        t.c_cc[VMIN]  = 1;
+        t.c_cc[VTIME] = 0;
+    }
     // TCSANOW and not TCSADRAIN: openkal's caller has just been told what the
     // mode is and is entitled to have it take effect before its next read.
     if (::tcsetattr(fd, TCSANOW, &t) != 0) return oke::last();