Comparing and Merging Files
diff3 Merges Incomplete Lines
With `-m', incomplete lines (see section 3. Incomplete Lines) are simply
copied to the output as they are found; if the merged output ends in an
conflict and one of the input files ends in an incomplete
line, succeeding `|||||||', `=======' or `>>>>>>>'
brackets appear somewhere other than the start of a line because
they are appended to the incomplete line.
Without `-m', if an
ed script option is specified and an
incomplete line is found,
diff3 generates a warning and acts as
if a newline had been present.