Use a mapping to add current line from preview to the file

[eyalk11]

let g:Lf_NormalMap ={ 
			\ 'Line':[['I','"zyt[:exec g:Lf_py "lineExplManager.quit()"<CR>"zp']],
			\ 'File':[['I','"zyy:exec g:Lf_py "lineExplManager.quit()"<CR>"zp']],
		\ 'History' :[['I','"zyy:exec g:Lf_py "lineExplManager.quit()"<CR>"zp']]
			\} 

In this case, pressing I does it of course