diff --git a/others/planck.c b/others/planck.c
index d5e9c8a..f924d5b 100644
--- a/others/planck.c
+++ b/others/planck.c
@@ -64,15 +64,32 @@ static void label()
 #include "planck.c"
 #undef defcode
 
+static void align() {
+    here = (cell*)((((cell)here) + CELL - 1) & ~(CELL - 1));
+}
+static void comma(cell v) { *here++ = v; }
+static void comma_byte(char c) {
+    *(char*)here = c;
+    here = (cell*)(((char*)here) + 1);
+}
+static void comma_string(char *s) {
+    while (*s) comma_byte(*s++);
+    comma_byte(0);
+}
+
 int main(int argc, char *argv[]) {
     saved_argc = argc;
     saved_argv = argv;
 
-#define defcode(c, label) \
-    memcpy(here, &(builtin){ latest, 1, c, {0}, label }, 3*CELL); \
-    latest = (builtin*)here; \
-    here += 3; \
+#define defcode(name, label)        \
+    comma((cell) latest);           \
+    latest = (void*)here - CELL;    \
+    comma_byte(strlen(name));       \
+    comma_string(name);             \
+    align();                        \
+    comma((cell) label);            \
     if (0) // skip function body
+
 #include "planck.c"
 
     cfa start = (cfa) here;
@@ -86,54 +103,55 @@ int main(int argc, char *argv[]) {
     return 0;
 }
 #else
-defcode('Q', quit) { exit(0); }
-defcode('C', cell_) { push(CELL); next(); }
-defcode('h', here_) { push((cell)&here); next(); }
-defcode('l', latest_) { push((cell)&latest); next(); }
-defcode('i', docol_) { push((cell)docol); next(); }
-defcode('e', exit_) { pc = (cell*)rpop(); next(); }
-defcode('@', fetch) { cell *p = (cell*)pop(); push(*p); next(); }
-defcode('!', store) { cell *p = (cell*)pop(); *p = pop(); next(); }
-defcode('?', cfetch) { char *p = (char*)pop(); push(*p); next(); }
-defcode('$', cstore) { char *p = (char*)pop(); *p = pop(); next(); }
-defcode('d', dfetch) { push((cell)dsp); next(); }
-defcode('D', dstore) { dsp = (cell*) pop(); next(); }
-defcode('r', rfetch) { push((cell)rsp); next(); }
-defcode('R', rstore) { rsp = (cell*) pop(); next(); }
-defcode('j', jump) { pc += (int)*pc/CELL; next(); }
-defcode('J', jump0) { pc += (int)(pop()?1:*pc/CELL); next(); }
-defcode('L', lit) { push(*pc++); next(); }
-defcode('S', litstring) {
-    int len = *pc++;
-    push((cell) pc);
-    pc += (len + CELL - 1)/CELL;
+defcode("Q", quit) { exit(0); }
+defcode("C", cell_) { push(CELL); next(); }
+defcode("h", here_) { push((cell)&here); next(); }
+defcode("l", latest_) { push((cell)&latest); next(); }
+defcode("i", docol_) { push((cell)docol); next(); }
+defcode("e", exit_) { pc = (cell*)rpop(); next(); }
+defcode("@", fetch) { cell *p = (cell*)pop(); push(*p); next(); }
+defcode("!", store) { cell *p = (cell*)pop(); *p = pop(); next(); }
+defcode("?", cfetch) { char *p = (char*)pop(); push(*p); next(); }
+defcode("$", cstore) { char *p = (char*)pop(); *p = pop(); next(); }
+defcode("d", dfetch) { push((cell)dsp); next(); }
+defcode("D", dstore) { dsp = (cell*) pop(); next(); }
+defcode("r", rfetch) { push((cell)rsp); next(); }
+defcode("R", rstore) { rsp = (cell*) pop(); next(); }
+defcode("j", jump) { pc += (int)*pc/CELL; next(); }
+defcode("J", jump0) { pc += (int)(pop()?1:*pc/CELL); next(); }
+defcode("L", lit) { push(*pc++); next(); }
+defcode("S", litstring) {
+    int n = *pc++;
+    push((cell)pc);
+    pc += (n + CELL - 1)/CELL;
+    next();
 }
-defcode('k', key) { 
+defcode("k", key) {
     int c = getchar();
     if (c <= 0)
         exit(0);
     push(c);
     next();
 }
-defcode('t', type) { putchar(pop()); next(); }
-defcode('x', exec) { (*(ip = (cfa) pop()))(); }
-defcode('f', find_) { push((cell) find(pop())); next(); }
-defcode('v', argv_) { push((cell) saved_argv); push(saved_argc); next(); }
-#define defbinary(c, label, op, ty) \
-defcode(c, label) { \
+defcode("t", type) { putchar(pop()); next(); }
+defcode("x", exec) { (*(ip = (cfa) pop()))(); }
+defcode("f", find_) { push((cell) find(pop())); next(); }
+defcode("v", argv_) { push((cell) saved_argv); push(saved_argc); next(); }
+#define defbinary(name, label, op, ty) \
+defcode(name, label) { \
     ty b = (ty) pop(); \
     *dsp = (cell)((ty) *dsp op b); \
     next(); \
 }
-defbinary('+', add, +, intptr_t)
-defbinary('-', sub, -, intptr_t)
-defbinary('*', mul, *, intptr_t)
-defbinary('/', div_, /, intptr_t)
-defbinary('%', mod, %, intptr_t)
-defbinary('&', and, &, uintptr_t)
-defbinary('|', or, |, uintptr_t)
-defbinary('^', xor, ^, uintptr_t)
-defbinary('<', lt, <, intptr_t)
-defbinary('=', eq, ==, intptr_t)
+defbinary("+", add, +, intptr_t)
+defbinary("-", sub, -, intptr_t)
+defbinary("*", mul, *, intptr_t)
+defbinary("/", div_, /, uintptr_t)
+defbinary("%", mod, %, uintptr_t)
+defbinary("&", and, &, uintptr_t)
+defbinary("|", or, |, uintptr_t)
+defbinary("^", xor, ^, uintptr_t)
+defbinary("<", lt, <, intptr_t)
+defbinary("=", eq, ==, intptr_t)
 
 #endif