diff --git a/doc/classes/Array.xml b/doc/classes/Array.xml
index ca7ab36df4..3b3239e9d8 100644
--- a/doc/classes/Array.xml
+++ b/doc/classes/Array.xml
@@ -107,7 +107,7 @@
 			</return>
 			<argument index="0" name="value" type="Variant">
 			</argument>
-			<argument index="1" name="before" type="bool" default="True">
+			<argument index="1" name="before" type="bool" default="true">
 			</argument>
 			<description>
 				Finds the index of an existing value (or the insertion index that maintains sorting order, if the value is not yet present in the array) using binary search. Optionally, a [code]before[/code] specifier can be passed. If [code]false[/code], the returned index comes after all existing entries of the value in the array.
@@ -123,7 +123,7 @@
 			</argument>
 			<argument index="2" name="func" type="String">
 			</argument>
-			<argument index="3" name="before" type="bool" default="True">
+			<argument index="3" name="before" type="bool" default="true">
 			</argument>
 			<description>
 				Finds the index of an existing value (or the insertion index that maintains sorting order, if the value is not yet present in the array) using binary search and a custom comparison method. Optionally, a [code]before[/code] specifier can be passed. If [code]false[/code], the returned index comes after all existing entries of the value in the array. The custom method receives two arguments (an element from the array and the value searched for) and must return [code]true[/code] if the first argument is less than the second, and return [code]false[/code] otherwise.
@@ -147,7 +147,7 @@
 		<method name="duplicate">
 			<return type="Array">
 			</return>
-			<argument index="0" name="deep" type="bool" default="False">
+			<argument index="0" name="deep" type="bool" default="false">
 			</argument>
 			<description>
 				Returns a copy of the array.
@@ -319,7 +319,7 @@
 			</argument>
 			<argument index="2" name="step" type="int" default="1">
 			</argument>
-			<argument index="3" name="deep" type="bool" default="False">
+			<argument index="3" name="deep" type="bool" default="false">
 			</argument>
 			<description>
 				Duplicates the subset described in the function and returns it in an array, deeply copying the array if [code]deep[/code] is [code]true[/code]. Lower and upper index are inclusive, with the [code]step[/code] describing the change between indices while slicing.
diff --git a/doc/classes/Basis.xml b/doc/classes/Basis.xml
index b0842e8f57..dcfd68eca7 100644
--- a/doc/classes/Basis.xml
+++ b/doc/classes/Basis.xml
@@ -100,7 +100,7 @@
 			</return>
 			<argument index="0" name="b" type="Basis">
 			</argument>
-			<argument index="1" name="epsilon" type="float" default="0.00001">
+			<argument index="1" name="epsilon" type="float" default="1e-05">
 			</argument>
 			<description>
 				Returns [code]true[/code] if this basis and [code]b[/code] are approximately equal, by calling [code]is_equal_approx[/code] on each component.
diff --git a/doc/classes/Color.xml b/doc/classes/Color.xml
index e3608ad93e..6471545bc9 100644
--- a/doc/classes/Color.xml
+++ b/doc/classes/Color.xml
@@ -119,7 +119,7 @@
 			</argument>
 			<argument index="2" name="v" type="float">
 			</argument>
-			<argument index="3" name="a" type="float" default="1">
+			<argument index="3" name="a" type="float" default="1.0">
 			</argument>
 			<description>
 				Constructs a color from an HSV profile. [code]h[/code], [code]s[/code], and [code]v[/code] are values between 0 and 1.
@@ -236,7 +236,7 @@
 		<method name="to_html">
 			<return type="String">
 			</return>
-			<argument index="0" name="with_alpha" type="bool" default="True">
+			<argument index="0" name="with_alpha" type="bool" default="true">
 			</argument>
 			<description>
 				Returns the color's HTML hexadecimal color string in ARGB format (ex: [code]ff34f822[/code]).
diff --git a/doc/classes/Dictionary.xml b/doc/classes/Dictionary.xml
index 010f87d23b..9526bc8da1 100644
--- a/doc/classes/Dictionary.xml
+++ b/doc/classes/Dictionary.xml
@@ -73,7 +73,7 @@
 		<method name="duplicate">
 			<return type="Dictionary">
 			</return>
-			<argument index="0" name="deep" type="bool" default="False">
+			<argument index="0" name="deep" type="bool" default="false">
 			</argument>
 			<description>
 				Creates a copy of the dictionary, and returns it.
@@ -100,7 +100,7 @@
 			</return>
 			<argument index="0" name="key" type="Variant">
 			</argument>
-			<argument index="1" name="default" type="Variant" default="Null">
+			<argument index="1" name="default" type="Variant" default="null">
 			</argument>
 			<description>
 				Returns the current value for the specified key in the [Dictionary]. If the key does not exist, the method returns the value of the optional default argument, or [code]null[/code] if it is omitted.
diff --git a/doc/classes/Plane.xml b/doc/classes/Plane.xml
index 908d2960a3..5209c62ef4 100644
--- a/doc/classes/Plane.xml
+++ b/doc/classes/Plane.xml
@@ -77,7 +77,7 @@
 			</return>
 			<argument index="0" name="point" type="Vector3">
 			</argument>
-			<argument index="1" name="epsilon" type="float" default="0.00001">
+			<argument index="1" name="epsilon" type="float" default="1e-05">
 			</argument>
 			<description>
 				Returns [code]true[/code] if [code]point[/code] is inside the plane (by a very minimum [code]epsilon[/code] threshold).
diff --git a/doc/classes/Rect2.xml b/doc/classes/Rect2.xml
index f495647915..d3624031ec 100644
--- a/doc/classes/Rect2.xml
+++ b/doc/classes/Rect2.xml
@@ -133,7 +133,7 @@
 			</return>
 			<argument index="0" name="b" type="Rect2">
 			</argument>
-			<argument index="1" name="include_borders" type="bool" default="False">
+			<argument index="1" name="include_borders" type="bool" default="false">
 			</argument>
 			<description>
 				Returns [code]true[/code] if the [Rect2] overlaps with [code]b[/code] (i.e. they have at least one point in common).
diff --git a/doc/classes/String.xml b/doc/classes/String.xml
index e0bb213912..fd44ae5ca3 100644
--- a/doc/classes/String.xml
+++ b/doc/classes/String.xml
@@ -366,7 +366,7 @@
 			</return>
 			<argument index="0" name="values" type="Variant">
 			</argument>
-			<argument index="1" name="placeholder" type="String" default="{_}">
+			<argument index="1" name="placeholder" type="String" default="&quot;{_}&quot;">
 			</argument>
 			<description>
 				Formats the string by replacing all occurrences of [code]placeholder[/code] with [code]values[/code].
@@ -512,7 +512,7 @@
 		<method name="is_valid_hex_number">
 			<return type="bool">
 			</return>
-			<argument index="0" name="with_prefix" type="bool" default="False">
+			<argument index="0" name="with_prefix" type="bool" default="false">
 			</argument>
 			<description>
 				Returns [code]true[/code] if this string contains a valid hexadecimal number. If [code]with_prefix[/code] is [code]true[/code], then a validity of the hexadecimal number is determined by [code]0x[/code] prefix, for instance: [code]0xDEADC0DE[/code].
@@ -736,7 +736,7 @@
 			</return>
 			<argument index="0" name="delimiter" type="String">
 			</argument>
-			<argument index="1" name="allow_empty" type="bool" default="True">
+			<argument index="1" name="allow_empty" type="bool" default="true">
 			</argument>
 			<argument index="2" name="maxsplit" type="int" default="0">
 			</argument>
@@ -805,7 +805,7 @@
 			</return>
 			<argument index="0" name="delimiter" type="String">
 			</argument>
-			<argument index="1" name="allow_empty" type="bool" default="True">
+			<argument index="1" name="allow_empty" type="bool" default="true">
 			</argument>
 			<argument index="2" name="maxsplit" type="int" default="0">
 			</argument>
@@ -827,7 +827,7 @@
 			</return>
 			<argument index="0" name="delimiter" type="String">
 			</argument>
-			<argument index="1" name="allow_empty" type="bool" default="True">
+			<argument index="1" name="allow_empty" type="bool" default="true">
 			</argument>
 			<description>
 				Splits the string in floats by using a delimiter string and returns an array of the substrings.
@@ -837,9 +837,9 @@
 		<method name="strip_edges">
 			<return type="String">
 			</return>
-			<argument index="0" name="left" type="bool" default="True">
+			<argument index="0" name="left" type="bool" default="true">
 			</argument>
-			<argument index="1" name="right" type="bool" default="True">
+			<argument index="1" name="right" type="bool" default="true">
 			</argument>
 			<description>
 				Returns a copy of the string stripped of any non-printable character (including tabulations, spaces and line breaks) at the beginning and the end. The optional arguments are used to toggle stripping on the left and right edges respectively.
diff --git a/editor/doc/doc_data.cpp b/editor/doc/doc_data.cpp
index 5bb5313d60..3e6f5f76dd 100644
--- a/editor/doc/doc_data.cpp
+++ b/editor/doc/doc_data.cpp
@@ -553,9 +553,11 @@ void DocData::generate(bool p_basic_types) {
 				argument_doc_from_arginfo(ad, mi.arguments[j]);
 				ad.name = arginfo.name;
 
-				int defarg = mi.default_arguments.size() - mi.arguments.size() + j;
-				if (defarg >= 0)
-					ad.default_value = mi.default_arguments[defarg];
+				int darg_idx = mi.default_arguments.size() - mi.arguments.size() + j;
+				if (darg_idx >= 0) {
+					Variant default_arg = mi.default_arguments[darg_idx];
+					ad.default_value = default_arg.get_construct_string();
+				}
 
 				method.arguments.push_back(ad);
 			}
@@ -671,7 +673,6 @@ void DocData::generate(bool p_basic_types) {
 					argument_doc_from_arginfo(ad, mi.arguments[j]);
 
 					int darg_idx = j - (mi.arguments.size() - mi.default_arguments.size());
-
 					if (darg_idx >= 0) {
 						Variant default_arg = E->get().default_arguments[darg_idx];
 						ad.default_value = default_arg.get_construct_string();