Module userdiff 

User-defined and built-in diff function-name matching.

This module implements the subset of Git’s userdiff behavior needed for hunk-header function context extraction.

Structs

FuncnameMatcher

Compiled function-name matcher used for diff hunk headers.

Constants

GIT_WORD_REGEX_DEFAULT_SUFFIX

Default word-regex suffix Git appends for built-in drivers (userdiff.c PATTERNS macro).

GIT_WORD_REGEX_FALLBACK

Built-in extended word regex when no driver matches (Git userdiff “default” driver).

Functions

builtin_word_regex

Returns the driver-specific word-regex pattern fragment plus whether it uses REG_ICASE.

matcher_for_driver

Resolve a function-name matcher for a named diff driver.

matcher_for_path

Resolve a function-name matcher for rel_path from attributes + config.

matcher_for_path_parsed

Like matcher_for_path but uses parsed .gitattributes rules from crate::attributes.

word_regex_pattern_for_path_parsed

Effective word-diff regular expression for rel_path (Git diff.wordRegex + driver + builtins).