Add Exit Codes to 'latexmlpost' and 'latexmlmath' (Fixes brucemiller#…

…1417) (brucemiller#1614)

* Add exit codes to latexmlpost

* Add exit code to latexmlmath

* latexml{post,math}: Exit 1 iff fatal

This commit updates the exit behavior of latexmlpost and latexmlmath to
only exit with code 1 if a fatal error occured.

Co-authored-by: Evgeny Epifanovsky <epif@q-chem.com>

bin/latexmlmath

@@ -240,12 +240,14 @@ if ($xmath) {
   outputXML($result->findnode('//ltx:XMath'), $xmath); }
 
 my $status = $latexml->getStatusMessage;
+my $code = $latexml->getStatusCode;
 # Should be combined with $post's status!
 # But better approach will be to manage all through LaTeXML.pm!!
 my $runtime = RunTime($starttime);
 NoteLog("Conversion complete: " . $status);
 NoteSTDERR("Conversion complete: " . $status . " (reqd. $runtime)");
 UseLog(undef);
+exit $code == 3 ? 1 : 0;
 
 #======================================================================
 # Helpers

bin/latexmlpost

@@ -474,6 +474,7 @@ NoteSTDERR("Postprocessing " . ($code == 3 ? 'failed' : 'complete') . " " . $sta
 UseLog(undef);
 CheckDebuggable();
 UseSTDERR(undef);
+exit $code == 3 ? 1 : 0;
 
 #======================================================================
 # helpers