On Fri, Mar 15 2019, Kapil Jain wrote: > Hi, > > for the microproject: creating diff function support for different languages. > i wrote one for shell script, have tested it outside of git and it works fine. > > query regarding accommodating the pattern in: > 1) userdiff.c, it uses - #define PATTERNS(name, pattern, word_regex), > for defining patterns to locate functions. > what is the use of pattern and word_regex parameters ? i am guessing > that pattern parameter is the actual pattern to spot functions in a > file, Yes, except "functions". More like "logical start of stuff". E.g. "package" statements for Perl etc. So whatever makes the most sense to put in the "@" context line for diff to give the user an idea of what "function" this is changing, in the loosest possible sense of "function". > and word_regex is used to get function name. is that correct ? > please let me know. No, it's whatever counts as a "token" in the language for the purpose of "diff --word-diff". So it needs to match e.g. operators as one unit.
