Side-by-side merge of differences between FILE1 and FILE2.
Mandatory arguments to long options are mandatory for short
options too.
-o, --output=FILE
operate interactively, sending output to FILE
-i, --ignore-case
consider upper- and lower-case to be the same
-E, --ignore-tab-expansion
ignore changes due to tab expansion
-Z, --ignore-trailing-space
ignore white space at line end
-b, --ignore-space-change
ignore changes in the amount of white space
-W, --ignore-all-space
ignore all white space
-B, --ignore-blank-lines
ignore changes whose lines are all blank
-I, --ignore-matching-lines=RE
ignore changes all whose lines match RE
--strip-trailing-cr
strip trailing carriage return on input
-a, --text
treat all files as text
-w, --width=NUM
output at most NUM (default 130) print columns
-l, --left-column
output only the left column of common lines
-s, --suppress-common-lines
do not output common lines
-t, --expand-tabs
expand tabs to spaces in output
--tabsize=NUM
tab stops at every NUM (default 8) print columns
-d, --minimal
try hard to find a smaller set of changes
-H, --speed-large-files
assume large files, many scattered small changes
--diff-program=PROGRAM
use PROGRAM to compare files
--help display this help and exit
-v, --version
output version information and exit
If a FILE is '-', read standard input. Exit status is 0 if
inputs are the same, 1 if different, 2 if trouble.
