Sam Doran 0fa56ed65d Add warning when using an empty regexp in lineinfile (#42013) (#42207) ... * Revert "Account for empty string regexp in lineinfile (#41451)" This reverts commit 4b5b4a760c. * Use context managers for interacting with files * Store line and regexp parameters in a variable * Add warning when regexp is an empty string * Remove '=' from error messages * Update warning message and add changelog * Add tests * Improve warning message Offer an equivalent regexp that won't trigger the warning. Update tests to match new warning. * Add porting guide entry for lineinfile change (cherry picked from commit fb55038d75)		2018-07-05 09:41:07 -07:00
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tasks	Add warning when using an empty regexp in lineinfile (#42013) (#42207)	2018-07-05 09:41:07 -07:00
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