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Fix extra docstring newlines under options.disable_function_signatures()
When using pybind::options to disable function signatures, user-defined docstrings only get appended if they exist, but newlines were getting appended unconditionally, so the docstring could end up with blank lines (depending on which overloads, in particular, provided docstrings). This commit suppresses the empty lines by only adding newlines for overloads when needed.
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@ -326,8 +326,10 @@ protected:
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signatures += "Overloaded function.\n\n";
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signatures += "Overloaded function.\n\n";
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}
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}
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// Then specific overload signatures
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// Then specific overload signatures
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bool first_user_def = true;
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for (auto it = chain_start; it != nullptr; it = it->next) {
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for (auto it = chain_start; it != nullptr; it = it->next) {
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if (options::show_function_signatures()) {
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if (options::show_function_signatures()) {
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if (index > 0) signatures += "\n";
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if (chain)
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if (chain)
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signatures += std::to_string(++index) + ". ";
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signatures += std::to_string(++index) + ". ";
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signatures += rec->name;
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signatures += rec->name;
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@ -335,12 +337,16 @@ protected:
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signatures += "\n";
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signatures += "\n";
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}
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}
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if (it->doc && strlen(it->doc) > 0 && options::show_user_defined_docstrings()) {
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if (it->doc && strlen(it->doc) > 0 && options::show_user_defined_docstrings()) {
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// If we're appending another docstring, and aren't printing function signatures, we
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// need to append a newline first:
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if (!options::show_function_signatures()) {
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if (first_user_def) first_user_def = false;
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else signatures += "\n";
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}
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if (options::show_function_signatures()) signatures += "\n";
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if (options::show_function_signatures()) signatures += "\n";
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signatures += it->doc;
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signatures += it->doc;
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if (options::show_function_signatures()) signatures += "\n";
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if (options::show_function_signatures()) signatures += "\n";
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}
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}
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if (it->next)
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signatures += "\n";
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}
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}
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/* Install docstring */
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/* Install docstring */
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@ -24,6 +24,15 @@ test_initializer docstring_generation([](py::module &m) {
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m.def("test_function1", [](int, int) {}, py::arg("a"), py::arg("b"));
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m.def("test_function1", [](int, int) {}, py::arg("a"), py::arg("b"));
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m.def("test_function2", [](int, int) {}, py::arg("a"), py::arg("b"), "A custom docstring");
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m.def("test_function2", [](int, int) {}, py::arg("a"), py::arg("b"), "A custom docstring");
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m.def("test_overloaded1", [](int) {}, py::arg("i"), "Overload docstring");
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m.def("test_overloaded1", [](double) {}, py::arg("d"));
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m.def("test_overloaded2", [](int) {}, py::arg("i"), "overload docstring 1");
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m.def("test_overloaded2", [](double) {}, py::arg("d"), "overload docstring 2");
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m.def("test_overloaded3", [](int) {}, py::arg("i"));
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m.def("test_overloaded3", [](double) {}, py::arg("d"), "Overload docstr");
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options.enable_function_signatures();
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options.enable_function_signatures();
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m.def("test_function3", [](int, int) {}, py::arg("a"), py::arg("b"));
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m.def("test_function3", [](int, int) {}, py::arg("a"), py::arg("b"));
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@ -3,13 +3,23 @@
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def test_docstring_options():
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def test_docstring_options():
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from pybind11_tests import (test_function1, test_function2, test_function3,
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from pybind11_tests import (test_function1, test_function2, test_function3,
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test_function4, test_function5, test_function6,
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test_function4, test_function5, test_function6,
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test_function7, DocstringTestFoo)
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test_function7, DocstringTestFoo,
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test_overloaded1, test_overloaded2, test_overloaded3)
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# options.disable_function_signatures()
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# options.disable_function_signatures()
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assert not test_function1.__doc__
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assert not test_function1.__doc__
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assert test_function2.__doc__ == "A custom docstring"
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assert test_function2.__doc__ == "A custom docstring"
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# docstring specified on just the first overload definition:
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assert test_overloaded1.__doc__ == "Overload docstring"
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# docstring on both overloads:
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assert test_overloaded2.__doc__ == "overload docstring 1\noverload docstring 2"
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# docstring on only second overload:
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assert test_overloaded3.__doc__ == "Overload docstr"
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# options.enable_function_signatures()
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# options.enable_function_signatures()
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assert test_function3.__doc__ .startswith("test_function3(a: int, b: int) -> None")
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assert test_function3.__doc__ .startswith("test_function3(a: int, b: int) -> None")
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