MATLAB: Help to solve a regexp problem

MATLABregular expression

I'm trying to capture comment block in a string (char array). Regular expression '%.*(\n|$)' captures string from % to the end of the line.
regexp(sprintf('  %%this is a comment'),'%.*(\n|$)','match')
    ans =
      cell
        '% this is a comment'
However, what I want to do is to capture multiple incidence of comment blocks in a char array. The above expression only captures the first one, failing to match '% and this'.
regexp(sprintf('  %%this is a comment\n    %%and this\n'),'%.*(\n|$)','match')
ans =
    cell
      '% this is a comment…'
Could somebody help me about this?

Best Answer

Test this
>> str = sprintf('  %%this is a comment\n    %%and this\n');
>> cac = regexp( str, '[ ]*%[^\n]+', 'match' )
cac = 
    '  % this is a comment'    '    % and this'
>> whos cac
  Name      Size            Bytes  Class    Attributes
  cac       1x2               294  cell
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