noun
delimiter-in-context
Technical computing term for a delimiter whose meaning depends on the surrounding context, such as in parsing or data formats.
このパーサーは文脈上の区切り子を正しく解釈する必要がある。
This parser needs to correctly interpret delimiters-in-context.
区切り子 is a general delimiter, while 文脈上の区切り子 specifically refers to a delimiter whose role depends on context.
Compound of 文脈上 (contextual) + の + 区切り子 (delimiter). A technical term likely coined in computing contexts.