The instruction prefix tree is not full, so extended instructions may be defined that are prefixed with STT, TSTL, TSL, TTL, TLSL, TLTL, TLL, LLS, or LLT. As these are non-standard, few implementations support them and the syntax is conflicting.
Invert (STT), Shuffle (STTS)or (TSLS)not (TSLT)and (TSLL)x-dump (TTL)printc (TLSS), OutputStack (TLSSS)x-args (TLSL)x-readfile (TLTLS)x-closefile (TLTLT)x-writefile (TLTLL)shell (TLL)PYFN (LLS), debug_printstack (LLSSS), debug_printheap (LLSST),
dbg (LLS)Trace (LLT), eval (LLT)CastAssertStrictwsintercpp, wsinterws, and wsa by Oliver Burghard define the following instructions:
| Mnemonic | Syntax | Arg | Stack | Description |
|---|---|---|---|---|
debug_printstack |
LLSSS | – | Dump stack | |
debug_printheap |
LLSST | – | Dump heap |
whitespace-nd by Harold Lee defines the following instruction:
| Mnemonic | Syntax | Arg | Stack | Description |
|---|---|---|---|---|
Shuffle |
STTS | a0 .. an – s0 .. sn | Randomly permute the order of all values on the stack |
Whitespace by JBanana defines the following instructions:
| Mnemonic | Syntax | Arg | Stack | Description |
|---|---|---|---|---|
x-dump |
TTL | – | XDump | |
x-args |
TLSL | – arg | Read from the program arguments | |
x-readfile |
TLTLS | file – ptr code | Read from a file | |
x-writefile |
TLTLL | ch file – code | Write to a file | |
x-closefile |
TLTLT | file – | Close a file |
Nospace by Leah Hirst defines the following instructions using the extension X token:
| Mnemonic | Syntax | Arg | Stack | Description |
|---|---|---|---|---|
Cast |
XS | type | – | Casts the top to a type |
Assert |
XT | type | – | Asserts that the top is compatible with a type |
Strict |
XXX | – | Unused |
WSA by Victor Oliva defines the following instructions:
| Mnemonic | Syntax | Arg | Stack | Description |
|---|---|---|---|---|
or |
TSLS | x y – x|y | Bitwise OR | |
not |
TSLT | x – ~x | Bitwise complement | |
and |
TSLL | x y – x&y | Bitwise AND | |
dbg |
LLS | – | Breakpoint |
pywhitespace by Phillip Bradbury defines the following instruction:
| Mnemonic | Syntax | Arg | Stack | Description |
|---|---|---|---|---|
Trace |
LLT | – | Dump program state |
whitespacesdk by MArtin SHerratt defines the following instructions:
| Mnemonic | Syntax | Arg | Stack | Description |
|---|---|---|---|---|
Invert |
STT | a0 .. an – an .. a0 | Invert the stack | |
OutputStack |
TLSSS (conflicts) | .. – | Output the entire stack as characters |
PYWS by Eizo Assik defines the following instruction:
| Mnemonic | Syntax | Arg | Stack | Description |
|---|---|---|---|---|
PYFN |
LLS | l | a1 .. an – a1 .. an retval | Call the Python function registered as l with n arguments |
Spiceweight by Collided Scope defines the following instructions:
| Mnemonic | Syntax | Arg | Stack | Description |
|---|---|---|---|---|
shell |
TLL | cmd – output | Execute shell command cmd and push its output (stdout and stderr), where cmd and output are base-128 numbers representing ASCII strings |
Spitewaste by Collided Scope defines the following instructions:
| Mnemonic | Syntax | Arg | Stack | Description |
|---|---|---|---|---|
shell |
TLL | s | ? | Execute shell command (unimplemented) |
eval |
LLT | s | ? | (unimplemented) |