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2019-05-19userdiff: add OctaveLibravatar Boxuan Li5-0/+18
Octave pattern is almost the same as matlab, except that '%%%' and '##' can also be used to begin code sections, in addition to '%%' that is understood by both. Octave pattern is merged into Matlab pattern. Test cases for the hunk header patterns of matlab and octave under t/t4018 are added. Signed-off-by: Boxuan Li <liboxuan@connect.hku.hk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-06userdiff: support new keywords in PHP hunk headerLibravatar Kana Natsuno4-0/+19
Recent version of PHP supports interface, trait, abstract class and final class. This patch fixes the PHP hunk header regexp to support all of these keywords. Signed-off-by: Kana Natsuno <dev@whileimautomaton.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-06t4018: add missing test cases for PHPLibravatar Kana Natsuno3-0/+15
A later patch changes the built-in PHP pattern. These test cases demonstrate aspects of the pattern that we do not want to change. Signed-off-by: Kana Natsuno <dev@whileimautomaton.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-01userdiff: add built-in pattern for golangLibravatar Alban Gruin5-0/+25
This adds xfuncname and word_regex patterns for golang, a quite popular programming language. It also includes test cases for the xfuncname regex (t4018) and updated documentation. The xfuncname regex finds functions, structs and interfaces. Although the Go language prohibits the opening brace from being on its own line, the regex does not makes it mandatory, to be able to match `func` statements like this: func foo(bar int, baz int) { } This is covered by the test case t4018/golang-long-func. The word_regex pattern finds identifiers, integers, floats, complex numbers and operators, according to the go specification. Signed-off-by: Alban Gruin <alban.gruin@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-03userdiff: add built-in pattern for CSSLibravatar William Duclot8-0/+38
CSS is widely used, motivating it being included as a built-in pattern. It must be noted that the word_regex for CSS (i.e. the regex defining what is a word in the language) does not consider '.' and '#' characters (in CSS selectors) to be part of the word. This behavior is documented by the test t/t4018/css-rule. The logic behind this behavior is the following: identifiers in CSS selectors are identifiers in a HTML/XML document. Therefore, the '.'/'#' character are not part of the identifier, but an indicator of the nature of the identifier in HTML/XML (class or id). Diffing ".class1" and ".class2" must show that the class name is changed, but we still are selecting a class. Logic behind the "pattern" regex is: 1. reject lines ending with a colon/semicolon (properties) 2. if a line begins with a name in column 1, pick the whole line Credits to Johannes Sixt (j6t@kdbg.org) for the pattern regex and most of the tests. Signed-off-by: William Duclot <william.duclot@ensimag.grenoble-inp.fr> Signed-off-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr> Reviewed-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-07-23userdiff: add support for Fountain documentsLibravatar Zoë Blade1-0/+4
Add support for Fountain, a plain text screenplay format. Git facilitates not just programming specifically, but creative writing in general, so it makes sense to also support other plain text documents besides source code. In the structure of a screenplay specifically, scenes are roughly analogous to functions, in the sense that it makes your job easier if you can see which ones were changed in a given range of patches. More information about the Fountain format can be found on its official website, at http://fountain.io . Signed-off-by: Zoë Blade <zoe@bytenoise.co.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-21userdiff: have 'cpp' hunk header pattern catch more C++ anchor pointsLibravatar Johannes Sixt12-12/+0
The hunk header pattern 'cpp' is intended for C and C++ source code, but it is actually not particularly useful for the latter, and even misses some use-cases for the former. The parts of the pattern have the following flaws: - The first part matches an identifier followed immediately by a colon and arbitrary text and is intended to reject goto labels and C++ access specifiers (public, private, protected). But this pattern also rejects C++ constructs, which look like this: MyClass::MyClass() MyClass::~MyClass() MyClass::Item MyClass::Find(... - The second part matches an identifier followed by a list of qualified names (i.e. identifiers separated by the C++ scope operator '::') separated by space or '*' followed by an opening parenthesis (with space between the tokens). It matches function declarations like struct item* get_head(... int Outer::Inner::Func(... Since the pattern requires at least two identifiers, GNU-style function definitions are ignored: void func(... Moreover, since the pattern does not allow punctuation other than '*', the following C++ constructs are not recognized: . template definitions: template<class T> int func(T arg) . functions returning references: const string& get_message() . functions returning templated types: vector<int> foo() . operator definitions: Value operator+(Value l, Value r) - The third part of the pattern finally matches compound definitions. But it forgets about unions and namespaces, and also skips single-line definitions struct random_iterator_tag {}; because no semicolon can occur on the line. Change the first pattern to require a colon at the end of the line (except for trailing space and comments), so that it does not reject constructor or destructor definitions. Notice that all interesting anchor points begin with an identifier or keyword. But since there is a large variety of syntactical constructs after the first "word", the simplest is to require only this word and accept everything else. Therefore, this boils down to a line that begins with a letter or underscore (optionally preceded by the C++ scope operator '::' to accept functions returning a type anchored at the global namespace). Replace the second and third part by a single pattern that picks such a line. This has the following desirable consequence: - All constructs mentioned above are recognized. and the following likely desirable consequences: - Definitions of global variables and typedefs are recognized: int num_entries = 0; extern const char* help_text; typedef basic_string<wchar_t> wstring; - Commonly used marco-ized boilerplate code is recognized: BEGIN_MESSAGE_MAP(CCanvas,CWnd) Q_DECLARE_METATYPE(MyStruct) PATTERNS("tex",...) (The last one is from this very patch.) but also the following possibly undesirable consequence: - When a label is not on a line by itself (except for a comment) it is no longer rejected, but can appear as a hunk header if it occurs at the beginning of a line: next:; IMO, the benefits of the change outweigh the (possible) regressions by a large margin. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-21t4018: test cases showing that the cpp pattern misses many anchor pointsLibravatar Johannes Sixt12-0/+66
Most of the tests show C++ code, but there is also a union definition and a GNU style function definition that are not recognized. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-21t4018: test cases for the built-in cpp patternLibravatar Johannes Sixt9-0/+55
A later patch changes the built-in cpp pattern. These test cases demonstrate aspects of the pattern that we do not want to change. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-21t4018: convert custom pattern test to the new infrastructureLibravatar Johannes Sixt3-0/+42
For the test case "matches to end of line", extend the pattern by a few wildcards so that the pattern captures the "RIGHT" token, which is needed for verification, without mentioning it in the pattern. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-21t4018: convert java pattern test to the new infrastructureLibravatar Johannes Sixt1-0/+8
Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-21t4018: convert perl pattern tests to the new infrastructureLibravatar Johannes Sixt5-0/+44
There is one subtlety: The old test case 'perl pattern gets full line of POD header' does not have its own new test case, but the feature is tested nevertheless by placing the RIGHT tag at the end of the expected hunk header in t4018/perl-skip-sub-in-pod. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-21t4018: an infrastructure to test hunk headersLibravatar Johannes Sixt1-0/+18
Add an infrastructure that simplifies adding new tests of the hunk header regular expressions. To add new tests, a file with the syntax to test can be dropped in the directory t4018. The README file explains how a test file must contain; the README itself tests the default behavior. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>