Line Break - Complex Context Dependent (South East Asian)

Complex Context Dependent (South East Asian) is a line breaking rule that applies to scripts like Thai, Lao, and Khmer, where words are not separated by spaces and characters can combine into syllables or clusters. In these writing systems, line breaks are not allowed between most characters within a word, but the exact break opportunities depend on complex contextual rules, such as vowel positioning, tone marks, and consonant stacking. These scripts require dictionary lookup or advanced linguistic analysis to determine valid break points, since simple character-level heuristics fail. The property ensures that text wraps only at safe boundaries, preserving readability and preventing awkward splits that would break syllable or semantic units, while still allowing breaks between words when the context makes them clear.