fstreplace(1) replace FST arcs with other FSTs


fstreplace [OPTIONS] root.fst rootlabel [rule.fst label...] [out.fst]]


Performs dynamic replacement of arcs in one FST with another FST, allowing for the definition of FSTs analogous to RTNs.


Boolean options accept either true or false as a value, or the implicit value true if neither value is specified.

Which labels to make non-epsilon on the call arc, one of "input", "output", "both", and "neither". Default: "input".
For backwards compatibility: call/return arcs are epsilon arcs. Default: false.
Write FST data aligned where appropriate. Default: false.
Require symbol tables to match when appropriate. Default: true.
Enable garbage collection of cache. Default: true.
Set the cache byte size that triggers garbage collection. Default: 1048576.
If true, FST errors are fatal. Otherwise, returned objects are flagged as bad. For example, FSTs are returned with the kError property set to true, and FST weights set so that Member() returns false. Default: true.
Set the characters used as a separator between printed fields. Default: "        ".
Set the default file reading mode for mappable files, either "read" or "map". Default: "read".
Verify fst properties queried by TestProperties. Default: false.
Set the characters enclosing the first weight of a printed composite weight (e.g., pair weight, tuple weight, and derived classes) to ensure proper I/O of nested composite weights. Must have size 0 (none) or 2 (open and close parenthesis). Default: no parentheses.
Set the character separator between printed composite weights. Default: comma.
Show usage information. Default: false.
Show brief usage information. Default: false.
Which labels to make non-epsilon on the return arc, one of "input", "output", "both", and "neither". Default: "neither".
Label to put on return arc. Default: 0.
Save input relabel pairs to file. Default: do not save.
Save output relabel pairs to file. Default: do not save.
Set the temporary directory to use. Default: /tmp.
Set the verbosity level. Default: 0.