I am having a file like this 
Firstline
         secondline
Firstline
         secondline 
          thirdline
firstline

[download]
i want to append the lines which are starting with space to the previous line so that the file is like 
Firstlinesecondline
Firstlinesecondlinethirdline
firstline

[download]
can any one help but the problem is if there is if it is like this 
firstline54324563213612531436436463246324634
         secondlidfndsfdsfdsfd
         thirdlinedsfsdf

[download]
then the o/p is like 

firstline54324563213612531436436463246324634secondlidfndsfdsfdsfd
thirdlinedsfsdf

[download]
but i want it in one line like 

firstline54324563213612531436436463246324634secondlidfndsfdsfdsfdthird
+linedsfsdf

[download]
is it possible?

In reply to Appending lines starting with white space to the previous line by ashok13123

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