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Shlok Kulshreshtha
113d62b141
Add a built-in userdiff driver for the Swift programming language so that
diff hunk headers and word diffs work out of the box for ".swift" files.
The funcname pattern is built for Swift's own declaration grammar: an
optional run of attributes ("@objc", "@available(iOS 13, *)", ...),
followed by an optional run of lowercase modifiers ("public", "static",
"final", ...), followed by a declaration keyword (func, class, struct,
enum, protocol, extension, actor, init, deinit, subscript). The keyword
is followed by a boundary that allows whitespace, "(" (init/subscript),
"?" or "!" (failable init), or "<" (generics), while still acting as a
word boundary so e.g. "initialize(" does not match.
The word regex recognizes Swift identifiers, hexadecimal, octal, binary,
integer and floating-point literals, and the language's operators.
Signed-off-by: Shlok Kulshreshtha <diy2903@gmail.com>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
How to write RIGHT test cases ============================= Insert the word "ChangeMe" (exactly this form) at a distance of at least two lines from the line that must appear in the hunk header. The text that must appear in the hunk header must contain the word "right", but in all upper-case, like in the title above. This text is a bit twisted and out of order, but it is itself a test case for the default hunk header pattern. Know what you are doing if you change it. BTW, this tests that the head line goes to the hunk header, not the line of equal signs.