Liblouis User's and Programmer's Manual
5.2 lou_trace ¶
When working on translation tables it is sometimes useful to determine
what rules were applied when translating a string. lou_trace
helps with exactly that. It list all the the applied rules for a given
translation table and an input string.
lou_trace [OPTIONS] TABLE[,TABLE,...]
Aside from the standard options (see common options)
lou_trace also accepts the following options:
- --forward
- -f
Trace a forward translation.
- --backward
- -b
Trace a backward translation.
If no options are given forward translation is assumed.
Once started you can type an input string followed by RET.
lou_trace will print the braille translation followed by
list of rules that were applied to produce the translation. A possible
invocation is listed in the following example:
$ lou_trace tables/en-us-g2.ctb the u.s. postal service ! u4s4 po/al s}vice 1. largesign the 2346 2. repeated 0 3. lowercase u 136 4. punctuation . 46 5. context _$l["."]$l @256 6. lowercase s 234 7. postpunc . 256 8. repeated 0 9. begword post 1234-135-34 10. largesign a 1 11. lowercase l 123 12. repeated 0 13. lowercase s 234 14. always er 12456 15. lowercase v 1236 16. lowercase i 24 17. lowercase c 14 18. lowercase e 15 19. pass2 $s1-10 @0 20. pass2 $s1-10 @0 21. pass2 $s1-10 @0