Issue_6456 Using # in links causes errors in PDF generation

- The # sign in an URL needs to be escaped as longtabu reads the table body as the argument to a command, so the self-escaping mechanism of \href cannot work (from https://tex.stackexchange.com/questions/447461/having-a-hash-sign-in-href-in-a-longtabu-cell)
- a regression regarding the change from `\tt` to `\texttt` (needed `{  ... }` as `\href` has 2 arguments )

1 files changed, 19 insertions, 0 deletions

diff --git a/src/util.cpp b/src/util.cpp
index b387a84..5fc8822 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -6964,6 +6964,25 @@ QCString latexEscapePDFString(const char *s)
   return result.data();
 }
 
+QCString latexFilterURL(const char *s)
+{
+  QGString result;
+  FTextStream t(&result);
+  const char *p=s;
+  char c;
+  while ((c=*p++))
+  {
+    switch (c)
+    {
+      case '#':  t << "\\#"; break;
+      default:
+        t << c;
+        break;
+    }
+  }
+  return result.data();
+}
+
 
 QCString rtfFormatBmkStr(const char *name)
 {