Merge pull request #1527 from Heinrich-XIAO/master

feat: add underline support

Author: alainm23

core/Util/Util.vala

@@ -1101,10 +1101,15 @@ We hope you’ll enjoy using Planify!""");
             Regex mailto_regex = /(?P<mailto>[a-zA-Z0-9\._\%\+\-]+@[a-zA-Z0-9\-\.]+\.[a-zA-Z]+(\S*))/; // vala-lint=space-before-paren
             Regex url_regex = /(?P<url>(http|https)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]+(\/\S*))/; // vala-lint=space-before-paren
             Regex url_markdown = new Regex ("\\[([^\\]]+)\\]\\(([^\\)]+)\\)");
-                    
+
             Regex italic_bold_regex = /\*\*\*(.*?)\*\*\*/; // vala-lint=space-before-paren
             Regex bold_regex = /\*\*(.*?)\*\*/; // vala-lint=space-before-paren
             Regex italic_regex = /\*(.*?)\*/; // vala-lint=space-before-paren
+            Regex underline_regex = /_(.*?)_/; // vala-lint=space-before-paren
+
+            Regex italic_bold_underline_regex = /\*\*\*_([^*]+)_\*\*\*/; // vala-lint=space-before-paren
+            Regex bold_underline_regex = /\*\*_([^*]+)_\*\*/; // vala-lint=space-before-paren
+            Regex italic_underline_regex = /\*_(.*?)_\*/; // vala-lint=space-before-paren
 
             MatchInfo info;
 
@@ -1155,6 +1160,34 @@ We hope you’ll enjoy using Planify!""");
                 } while (info.next ());
             }
 
+            Gee.ArrayList<RegexMarkdown> italic_bold_underline = new Gee.ArrayList<RegexMarkdown> ();
+            if (italic_bold_underline_regex.match (text, 0, out info)) {
+                do {
+                    italic_bold_underline.add (new RegexMarkdown (info.fetch (0), info.fetch (1)));
+                } while (info.next ());
+            }
+
+            Gee.ArrayList<RegexMarkdown> bold_underline = new Gee.ArrayList<RegexMarkdown> ();
+            if (bold_underline_regex.match (text, 0, out info)) {
+                do {
+                    bold_underline.add (new RegexMarkdown (info.fetch (0), info.fetch (1)));
+                } while (info.next ());
+            }
+
+            Gee.ArrayList<RegexMarkdown> italic_underline = new Gee.ArrayList<RegexMarkdown> ();
+            if (italic_underline_regex.match (text, 0, out info)) {
+                do {
+                    italic_underline.add (new RegexMarkdown (info.fetch (0), info.fetch (1)));
+                } while (info.next ());
+            }
+
+            Gee.ArrayList<RegexMarkdown> underlines = new Gee.ArrayList<RegexMarkdown> ();
+            if (underline_regex.match (text, 0, out info)) {
+                do {
+                    underlines.add (new RegexMarkdown (info.fetch (0), info.fetch (1)));
+                } while (info.next ());
+            }
+
             string converted = text;
 
             foreach (RegexMarkdown m in markdown_urls) {
@@ -1173,6 +1206,22 @@ We hope you’ll enjoy using Planify!""");
                 converted = converted.replace (email, @"<a href=\"mailto:$email\">$email</a>");
             });
 
+            foreach (RegexMarkdown m in italic_bold_underline) {
+                converted = converted.replace (m.match, "<i><b><u>" + m.text + "</u></b></i>");
+            }
+
+            foreach (RegexMarkdown m in bold_underline) {
+                converted = converted.replace (m.match, "<b><u>" + m.text + "</u></b>");
+            }
+
+            foreach (RegexMarkdown m in italic_underline) {
+                converted = converted.replace (m.match, "<i><u>" + m.text + "</u></i>");
+            }
+
+            foreach (RegexMarkdown m in underlines) {
+                converted = converted.replace (m.match, "<u>" + m.text + "</u>");
+            }
+
             foreach (RegexMarkdown m in italic_bold) {
                 converted = converted.replace (m.match, "<i><b>" + m.text + "</b></i>");
             }