fixes reported quote issue on $file in shel exec commands (MDL14325) backported
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@@ -34,7 +34,7 @@ function get_text_for_indexing_pdf(&$resource){
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else{
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$file = escapeshellarg($CFG->dataroot.'/'.$resource->course.'/'.$resource->reference);
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$command = trim($CFG->block_search_pdf_to_text_cmd);
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$text_converter_cmd = "{$moodleroot}{$command} \"$file\" -";
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$text_converter_cmd = "{$moodleroot}{$command} $file -";
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$result = shell_exec($text_converter_cmd);
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if ($result){
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return $result;
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