I'm looking for a regexp which matches if the string is non-empty AND either empty or if the first non-space character in the string is not a digit. The string is guaranteed to contain no \n.

Of course I can do it with 

/^\s*[^\s\d]|^$/

[download]
but I wonder if there are simpler/more elegant solutions.

updated correction about handling of empty string
-- 
Ronald Fischer <ynnor@mm.st>

In reply to Ideas to improve this regexp? by rovf

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