|-BINary||This option may be used to compare binary files on a byte[hy]for[hy]byte basis. (Each byte is treated as a [lq]line[rq] by the algorithm.) Byte values are displayed in hexadecimal, as are the addresses. Note: this is different behaviour to the fhist(1) option of the same name.|
|-No_BINary||This option may be used to avoid comparing binary files. A warnign will be prointed on the standard error, but the program will report success without printing andy other output.|
|-Blank||Ignore blank lines in the input files.|
|This specifies the number of lines of "context" which is displayed. This shows the specified number of lines before and after the actual lines being changed. This is useful to locate and identify the line which is actually being changed, when there are many identical copies of the line in the file.|
|-Edit||Output an edit script which is machine readable.|
This stops the comparison if the number of changes exceeds the
Each change is a delete or insert of a single line.
This is useful when you are not interested in the results
when the files are totally different.
Another use is a quick check to see if two files are identical,
by using a value of zero.
|This merges together lines which have changed, if they are separated by up to the specified number of unchanged lines. This makes a change look bigger, but reduces the "choppiness" of the output by showing fewer regions being changed. This is particularly effective to suppress worthless matchings of single blank lines or comment beginning and ending lines. A useful value for this option is 3 or so.|
|-Matching||Output matching lines, rather then changed lines.|
|-Number||This outputs the line numbers at the left edge of the output. This isnt normally needed, since the line numbers are displayed in the comment line preceding the lines being displayed. Not outputting the line numbers prevents the terminal from needlessly scrolling for long lines.|
|Send the output to this file, rather than the standard output.|
|-Quiet||Output only a quick summary of changes needed.|
|-Spaces||This option ignores differences in the number of spaces in the two lines. That is, two or more adjacent spaces are handled as a single space. Spaces at the beginning or end of a line are totally ignored.|
Uppercase lines before comparing.
This outputs all of both files together,
showing what happened to each line of the first file in order
to change to the line in the second file.
This output is in "change bar" format,
where inserted lines begin with
|+, deleted lines begin with
|[mi], and unchanged lines begin with spaces.
The presence of the vertical bar makes it easy to search for the
|Reference Manual||*(N) (1)||FHist|