Tuning format for special graph.

* e.g. tree

Signed-off-by: Eric Wang <skygragon@gmail.com>

Author: skygragon

lib/commands/show.js

@@ -53,7 +53,10 @@ cmd.handler = function(argv) {
       var filename = problem.id + '.' + problem.key + h.langToExt(argv.lang);
       var i = 0;
       while (fs.existsSync(filename)) {
-        filename = problem.key + '.' + (i++) + h.langToExt(argv.lang);
+        filename = problem.id + '.' +
+                   problem.key + '.' +
+                   (i++) +
+                   h.langToExt(argv.lang);
       }
 
       core.exportProblem(problem, filename, !argv.extra);

lib/core.js

@@ -130,8 +130,11 @@ core.exportProblem = function(problem, f, codeOnly) {
     // remove all '\r' in the raw string.
     // FIXME: while in template file we still use '\r\n' for the sake
     // of windows, is it really necessary?
+    var desc = input.desc.replace(/\r\n/g, '\n')
+                         .replace(/^ /mg, '⁠');
+
     var wrap = require('wordwrap')(79 - input.commentLine.length);
-    input.desc = wrap(input.desc.replace(/\r\n/g, '\n')).split('\n');
+    input.desc = wrap(desc).split('\n');
 
     var tpl = fs.readFileSync(path.resolve(__dirname, '../source.tpl'), 'utf-8');
     output = _.template(tpl)(input);