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userdiff: add builtin diff driver for kotlin language.

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The xfuncname pattern finds func/class declarations
in diffs to display as a hunk header. The word_regex
pattern finds individual tokens in Kotlin code to generate
appropriate diffs.

This patch adds xfuncname regex and word_regex for Kotlin
language.

Signed-off-by: Jaydeep P Das <jaydeepjd.8914@gmail.com>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jaydeep P Das
2022-03-12 10:18:32 +05:30
committed by Junio C Hamano
parent 715d08a9e5
commit 09188ed930
15 changed files with 167 additions and 0 deletions
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12
userdiff.c
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@ -168,6 +168,18 @@ PATTERNS("java",
"|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
"|[-+*/<>%&^|=!]="
"|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"),
PATTERNS("kotlin",
"^[ \t]*(([a-z]+[ \t]+)*(fun|class|interface)[ \t]+.*)$",
/* -- */
"[a-zA-Z_][a-zA-Z0-9_]*"
/* hexadecimal and binary numbers */
"|0[xXbB][0-9a-fA-F_]+[lLuU]*"
/* integers and floats */
"|[0-9][0-9_]*([.][0-9_]*)?([Ee][-+]?[0-9]+)?[fFlLuU]*"
/* floating point numbers beginning with decimal point */
"|[.][0-9][0-9_]*([Ee][-+]?[0-9]+)?[fFlLuU]?"
/* unary and binary operators */
"|[-+*/<>%&^|=!]==?|--|\\+\\+|<<=|>>=|&&|\\|\\||->|\\.\\*|!!|[?:.][.:]"),
PATTERNS("markdown",
"^ {0,3}#{1,6}[ \t].*",
/* -- */