5133 - show instruction source in trace

It's a little hacky in some corner cases. In particular, if debug information
isn't available the trace will contain duplicated lines. This is because
I don't want the core trace lines all my tests rely on (introduced in the
'vm' layer) to have to know about debug info (introduced in the 'labels'
and 'debug' layers).

Thanks Charles Saternos for the feedback and suggestion!

1 files changed, 1 insertions, 0 deletions

diff --git a/subx/038---literal_strings.cc b/subx/038---literal_strings.cc
index a795ce23..65a7740b 100644
--- a/subx/038---literal_strings.cc
+++ b/subx/038---literal_strings.cc
@@ -104,6 +104,7 @@ void parse_instruction_character_by_character(const string& line_data, vector<li
   istringstream in(line_data);
   in >> std::noskipws;
   line result;
+  result.original = line_data;
   // add tokens (words or strings) one by one
   while (has_data(in)) {
     skip_whitespace(in);