Replaced string statements by char array for backward compatibility.

lib/+artoa/+load/tomlini.m

@@ -195,11 +195,11 @@ end
                 columnCount = length(lineAsDouble);
             else
                 if (length(lineAsDouble) ~= columnCount)
-                    warning( ...
-                        "Expecting " + num2str(columnCount) + " columns in line " + ...
-                        num2str(i) + " of section " + pTitle + ", but found " + ...
-                        num2str(length(lineAsDouble)) + " columns. Line is being skipped!" ...
-                    );
+                    warning([ mfilename ...
+                        'Expecting ' num2str(columnCount) ' columns in line ' ...
+                        num2str(i) ' of section ' pTitle ', but found ' ...
+                        num2str(length(lineAsDouble)) ' columns. Line is being skipped!' ...
+                    ]);
                     continue;
                 end
                 matrix = [matrix; lineAsDouble];

lib/+artoa/+save/rfc.m

@@ -17,7 +17,6 @@ function [ success ] = rfc(pFilename, pFloatDetails, pData, pTrajectory)
 success = false;
 
 %% Initialize variables required for processing
-headerLineIndicator = "** ";
 headerString = '';
 dataString = '';
 

lib/+artoa/+save/trj4.m

@@ -15,7 +15,7 @@ function [ success ] = trj4(pFilename, pHeader, pData)
 success = false;
 
 %% Initialize variables required for processing
-headerLineIndicator = "# ";
+headerLineIndicator = '# ';
 
 %% Parameter check
 
@@ -55,7 +55,7 @@ preparedHeader = splitlines(pHeader);
 
 fileString = '';
 for i = 1:length(preparedHeader)
-    fileString = fileString + headerLineIndicator + preparedHeader{i} + newline;
+    fileString = [fileString headerLineIndicator preparedHeader{i} newline];
 end
 
 
@@ -71,7 +71,7 @@ for i = 1:size(pData, 1)
         num2str(pData(i, 6), '%8.3f'),
         num2str(pData(i, 7), '%8.3f'),
     };
-    fileString = fileString + strjoin(line) + newline;
+    fileString = [fileString strjoin(line) newline];
 end
 
 %% Save to file