Patdiff_lib.Comparison_resultval create :
Configuration.t ->
prev:Patdiff_core.diff_input ->
next:Patdiff_core.diff_input ->
compare_assuming_text:
(Configuration.t ->
prev:Patdiff_core.diff_input ->
next:Patdiff_core.diff_input ->
Patdiff_hunks.t) ->
tval has_no_diff : t -> bool