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liblouis

12 indexed repositories · View on GitHub

liblouis
Open-source braille translator and back-translator.

C · 346 stars
liblouisutdml
An open-source library providing complete braille transcription services for xml, html and text documents

C · 29 stars
liblouis-js
Port/cross-compiled version of liblouis to Javascript

JavaScript · 15 stars
js-build
Pre-built binaries of liblouis for Javascript environments.

JavaScript · 6 stars
louis-rs
A rewrite of liblouis in Rust

Rust · 6 stars
liblouis-java
Java bindings for liblouis

Java · 5 stars
liblouis-nar
liblouis built and packaged with maven-nar-plugin

C · 3 stars
lua-louis
Experimental lua bindings for liblouis

M4 · 2 stars
liblouisxml
Fork of the depreciated liblouisxml, which is still used in odt2braille.

C · 2 stars
liblouis.github.io
The static website for liblouis using Jekyll

JavaScript · 2 stars
liblouis-mode
An Emacs major mode for editing liblouis braille translation tables

Emacs Lisp · 1 star
liblouisutdml-nar
liblouisutdml built and packaged with maven-nar-plugin

C · 1 star

Beginner friendly Everything

Open All

The multipass attribute `$a` (any character) never matches Open

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

liblouis/louis-rs#33 · Opened Sep 18, 2026
A leading `_` in a multipass test is replaced along with the match when the test has no brackets or the action has `*` Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

liblouis/louis-rs#32 · Opened Sep 18, 2026
Heap buffer overflow in lou_backTranslateString when using typebuf Open

memory error

Difficulty 3/5 1-2 days Newbie friendliness 55/100

liblouis/liblouis#2097 · Opened Sep 11, 2026
[BUG] Heap buffer overflow in lou_backTranslateString memset typebuf Open

memory error

Difficulty 4/5 3-5 days Newbie friendliness 48/100

liblouis/liblouis#2096 · Opened Sep 11, 2026
memory leak in set_paths() Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

liblouis/liblouisutdml#128 · Opened Sep 10, 2026
Segmentation fault (use-after-free or double-free) in parseQuery at metadata.c:586 when parsing crafted table query string Open

memory error

Difficulty 3/5 1-2 days Newbie friendliness 68/100

liblouis/liblouis#2095 · Opened Sep 9, 2026
Heap-buffer-overflow in _lou_backTranslate at lou_backTranslateString.c:228 (memset out-of-bounds write) Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

liblouis/liblouis#2094 · Opened Sep 9, 2026
Document that the dotless opcodes (contraction, nocont, compbrl) are forward-only Open

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

liblouis/liblouis#2093 · Opened Sep 7, 2026
Include Dipendra's updated Tamil tables (tamil.cti and ta-ta-g1.ctb) Open

tables

Difficulty 2/5 1-3 hours Newbie friendliness 58/100

liblouis/liblouis#2089 · Opened Sep 1, 2026
Tamil Table [ta-ta-g1.ctb] : Dots 5 and 6 (which represent the Tamil letter 'ன') are being erroneously inserted into the middle of standard Tamil words and character sequences Open

help wanted needs test tables

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

liblouis/liblouis#2087 · 1 comment · Opened Sep 1, 2026
Report whether a back-translation result can still change Open

enhancement help wanted

Difficulty 4/5 3-5 days Newbie friendliness 58/100

liblouis/louis-rs#29 · 1 comment · Opened Aug 29, 2026
Idea: a rule-level coverage tool for the YAML test suite Open

enhancement help wanted

Difficulty 4/5 3-5 days Newbie friendliness 48/100

liblouis/louis-rs#27 · Opened Aug 28, 2026
`outputPos` and `cursorPos` can contain an undocumented `-1` on a successful translation Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

liblouis/liblouis#2080 · 4 comments · Opened Aug 27, 2026
Back-translation does not recognize the indicators of user-defined modes Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

liblouis/liblouis#2079 · Opened Aug 26, 2026
UEB: capitals indicators vs. combining diacritics: adopt capsmodechars by decoupling it from caps word-boundary detection Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

liblouis/liblouis#2074 · Opened Aug 21, 2026
Fix the documentation for backtick in Context and Multipass Opcodes Open

documentation

Difficulty 1/5 Under an hour Newbie friendliness 88/100

liblouis/liblouis#2071 · 9 comments · Opened Aug 20, 2026
Enforce that in the second operand of swapdd the dot patterns are single cells Open

bug tables

Difficulty 3/5 1-2 days Newbie friendliness 70/100

liblouis/liblouis#2070 · 1 comment · Opened Aug 20, 2026
Back translation working in Liblouis test harness but not through NVDA Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

liblouis/liblouis#2063 · 1 comment · Opened Aug 15, 2026
Implement the compbrlAtCursor and compbrlLeftCursor translation modes Open

enhancement help wanted

Difficulty 4/5 3-5 days Newbie friendliness 55/100

liblouis/louis-rs#20 · Opened Aug 14, 2026
Implement the partialTrans translation mode Open

enhancement help wanted

Difficulty 4/5 3-5 days Newbie friendliness 72/100

liblouis/louis-rs#19 · 2 comments · Opened Aug 14, 2026
The mingw build fails on GCC 15 Open

build system windows

liblouis/liblouis#2059 · 1 assignee · Opened Aug 11, 2026
Persian Braille tables: audit against Iran's 1393/2014 manual and Unicode gaps Open

tables

Difficulty 5/5 Over a week Newbie friendliness 38/100

liblouis/liblouis#2053 · 4 comments · Opened Aug 6, 2026
Consider relicensing crate Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

liblouis/louis-rs#14 · 8 comments · Opened Aug 3, 2026
Backtranslation of words with dash or slash inbetween Open

back-translation bug needs test

liblouis/liblouis#2033 · 6 comments · 1 assignee · Opened Jul 7, 2026
SEGV in `lou_translate` via `swapReplace` Open

fuzzing

Difficulty 4/5 3-5 days Newbie friendliness 55/100

liblouis/liblouis#2000 · Opened May 13, 2026
Memory Leak in `_lou_resolveTable` When Using Custom Table Resolver Open

memory error

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

liblouis/liblouis#1986 · Opened Apr 25, 2026
Using --display-table with lou_translate produces empty/unexpected output for ASCII-based back-translation Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

liblouis/liblouis#1934 · 2 comments · Opened Feb 16, 2026
In louis-rs, tests/braille-specs/hu-hu-g1_dictionary_special_consonants.yaml produce lot of capsletter and begcapsword, and few numsign indicators related failures Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

liblouis/louis-rs#4 · 15 comments · Opened Feb 11, 2026
Investigate problem with Dutch table in JAWS braille input mode Open

waiting

liblouis/liblouis#1918 · 1 assignee · Opened Feb 5, 2026
Infinite Loop in `toLowercase` / `_lou_stringHash` Character Linked List Traversal Open

fuzzing

Difficulty 4/5 3-5 days Newbie friendliness 35/100

liblouis/liblouis#1910 · 2 comments · Opened Jan 29, 2026
NULL Pointer Dereference caused by _lou_compileTranslationRule and _lou_compileDisplayRule Open

memory error

Difficulty 2/5 1-3 hours Newbie friendliness 58/100

liblouis/liblouis#1909 · 1 comment · Opened Jan 29, 2026
Benchmark tool to compare size of compiled table in memory with size of table source files on disk Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

liblouis/liblouis#1892 · 2 comments · Opened Dec 10, 2025
Optimize size of compiled tables Open

refactoring

Difficulty 5/5 Over a week Newbie friendliness 20/100

liblouis/liblouis#1891 · 5 comments · Opened Dec 10, 2025
Feeding the attached test-case (poc-doPassSearch) to lou_translateString() (via the upstream fuzz target fuzz_translate_generic) causes an immediate heap-buffer-overflow detected by AddressSanitizer Open

help wanted memory error

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

liblouis/liblouis#1862 · Opened Oct 23, 2025
Calling lou_compileString(tableList, inString) can crash with a NULL-pointer dereference. Open

help wanted memory error

Difficulty 4/5 3-5 days Newbie friendliness 42/100

liblouis/liblouis#1860 · Opened Oct 23, 2025
German Braille: Incorrect handling of contractions before word-breaking hyphens ("Wortersatzstrich") Open

tables

liblouis/liblouis#1849 · 1 comment · 1 assignee · Opened Sep 11, 2025
Add a bit of documentation on the Java bindings Open

documentation

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

liblouis/liblouis#1847 · Opened Sep 1, 2025
Dockerfile seems to be for AMD64 architecture only Open

docker

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

liblouis/liblouis#1805 · 3 comments · Opened Jun 6, 2025
Add `#-authority` metadata to tables Open

task

Difficulty 4/5 3-5 days Newbie friendliness 45/100

liblouis/liblouis#1804 · Opened Jun 6, 2025
Add a new function `lou_setTablePath` Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

liblouis/liblouis#1794 · Opened May 29, 2025
Fails to build against libxml 2.14 Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

liblouis/liblouisxml#6 · 8 comments · Opened May 27, 2025
Text output not appearing properly on note pad for some braille characters in Kannada and Hindi Open

back-translation needs maintainer needs test tables

Difficulty 4/5 3-5 days Newbie friendliness 35/100

liblouis/liblouis#1788 · 1 comment · Opened May 24, 2025
AddressSanitizer: stack-buffer-overflow in copyCharacters /liblouis/lou_translateString.c:924 Open

fuzzing help wanted memory error

Difficulty 4/5 3-5 days Newbie friendliness 35/100

liblouis/liblouis#1765 · 1 comment · Opened Mar 27, 2025
AddressSanitizer: heap-buffer-overflow in checkEmphasisChange /liblouis/lou_translateString.c:1838 Open

fuzzing help wanted memory error

Difficulty 4/5 3-5 days Newbie friendliness 35/100

liblouis/liblouis#1764 · Opened Mar 27, 2025
Program received signal SIGSEGV, Segmentation fault. AddressSanitizer: stack-overflow in _lou_pattern_check Open

fuzzing help wanted memory error

Difficulty 4/5 3-5 days Newbie friendliness 35/100

liblouis/liblouis#1763 · Opened Mar 27, 2025
Program received signal SIGSEGV, Segmentation fault in toLowercase at /liblouis/lou_translateString.c:231 Open

fuzzing help wanted memory error

Difficulty 3/5 1-2 days Newbie friendliness 55/100

liblouis/liblouis#1762 · Opened Mar 27, 2025
Program received signal SIGSEGV, Segmentation fault. in findForPassRule at /liblouis/lou_translateString.c:212 Open

fuzzing help wanted memory error

Difficulty 4/5 3-5 days Newbie friendliness 38/100

liblouis/liblouis#1761 · Opened Mar 27, 2025
AddressSanitizer: stack-buffer-overflow in putchars /liblouis/lou_backTranslateString.c:890 Open

fuzzing help wanted memory error

Difficulty 3/5 1-2 days Newbie friendliness 35/100

liblouis/liblouis#1760 · Opened Mar 27, 2025
AddressSanitizer: stack-buffer-overflow in isBegWord /liblouis/lou_backTranslateString.c:432 Open

fuzzing help wanted memory error

Difficulty 3/5 1-2 days Newbie friendliness 48/100

liblouis/liblouis#1759 · Opened Mar 27, 2025
Program received signal SIGSEGV, Segmentation fault. in _lou_getTable () from /lib/x86_64-linux-gnu/liblouis.so.20 Open

fuzzing help wanted memory error

Difficulty 4/5 3-5 days Newbie friendliness 30/100

liblouis/liblouis#1758 · Opened Mar 27, 2025

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