Merge branch 'topic/vadim/markdown' into 'master'

Process soft line break by HTML and ODF backends.

Closes #130

See merge request eng/ide/gnatdoc!184

Author: godunko

source/backend/gnatdoc-backend-html_markup.adb

@@ -43,7 +43,7 @@ package body GNATdoc.Backend.HTML_Markup is
       Text : VSS.Strings.Virtual_String);
 
    overriding procedure Visit_Soft_Line_Break
-     (Self : in out Annotated_Text_Builder) is null;
+     (Self : in out Annotated_Text_Builder);
 
    overriding procedure Enter_Emphasis
      (Self : in out Annotated_Text_Builder);
@@ -408,6 +408,18 @@ package body GNATdoc.Backend.HTML_Markup is
       Write_End_Element (Self.Stream, "em");
    end Leave_Emphasis;
 
+   ---------------------------
+   -- Visit_Soft_Line_Break --
+   ---------------------------
+
+   overriding procedure Visit_Soft_Line_Break
+     (Self : in out Annotated_Text_Builder) is
+   begin
+      --  Convert soft line break into space character.
+
+      Self.Visit_Text (" ");
+   end Visit_Soft_Line_Break;
+
    ----------------
    -- Visit_Text --
    ----------------

source/backend/odf/gnatdoc-backend-odf_markup.adb

@@ -81,7 +81,7 @@ package body GNATdoc.Backend.ODF_Markup is
       Text : VSS.Strings.Virtual_String);
 
    overriding procedure Visit_Soft_Line_Break
-     (Self : in out Annotated_Text_Builder) is null;
+     (Self : in out Annotated_Text_Builder);
 
    overriding procedure Enter_Emphasis
      (Self : in out Annotated_Text_Builder);
@@ -607,6 +607,18 @@ package body GNATdoc.Backend.ODF_Markup is
       Write_End_Element (Self.Stream, Text_Namespace, "span");
    end Leave_Strong;
 
+   ---------------------------
+   -- Visit_Soft_Line_Break --
+   ---------------------------
+
+   overriding procedure Visit_Soft_Line_Break
+     (Self : in out Annotated_Text_Builder) is
+   begin
+      --  Convert soft line break into space character.
+
+      Self.Visit_Text (" ");
+   end Visit_Soft_Line_Break;
+
    ----------------
    -- Visit_Text --
    ----------------