From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Mon, 25 Jan 2021 21:58:36 +0000 (-0700)
Subject: Nicely format exception texts.
X-Git-Tag: v9.3.0-rc1~544^2~2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01c12ce47049282e978c06980a54a3a216ac3534;p=dealii.git

Nicely format exception texts.
---

diff --git a/source/base/exceptions.cc b/source/base/exceptions.cc
index e3d1e2bb5a..336abc2dbf 100644
--- a/source/base/exceptions.cc
+++ b/source/base/exceptions.cc
@@ -321,10 +321,25 @@ ExceptionBase::generate_message() const
                 << "--------------------------------------------------------"
                 << std::endl;
 
-      // print out general data
+      // Print out general data
       print_exc_data(converter);
-      // print out exception specific data
-      print_info(converter);
+
+      // Print out exception specific data. Put this into another stringstream
+      // object for now so that we can break long lines and print them in a
+      // more easily read way
+      {
+        std::ostringstream message;
+        print_info(message);
+
+        const auto message_in_lines =
+          Utilities::break_text_into_lines(message.str(), 70);
+
+        // Put the message into the stream that will be output.
+        for (const auto &line : message_in_lines)
+          converter << "    " << line << '\n';
+      }
+
+
       print_stack_trace(converter);
 
       if (!deal_II_exceptions::internals::get_additional_assert_output()