src/usr.bin/diff/diff.1, branch releng/12.0

diff(1): Implement -B/--ignore-blank-lines

2018-08-19T03:57:20Z

As noted by cem in r338035, coccinelle invokes diff(1) with the -B flag. This was not previously implemented here, so one was forced to create a link for GNU diff to /usr/local/bin/diff Implement the -B flag and add some primitive tests for it. It is implemented in the same fashion that -I is implemented; each chunk's lines are scanned, and if a non-blank line is encountered then the chunk will be output. Otherwise, it's skipped. MFC after: 2 weeks

Cross reference pr(1) which diff might call with -l option

2017-04-20T19:14:52Z

Document all long options

2017-04-20T19:05:43Z

Implement a basic --changed-group-format

2017-04-20T14:22:33Z

etcupdate(8) requires that option, while GNU diff supports many more variation of that options, their behaviour beside the simple verion implemented here are quite inconsistent as such I do not plan to implement those. The only special keyword supported by this implementation are: %< and %> %= is not implemented as the documentation of GNU diff says: common lines, but it actually when tested print the changes from the first file

add a stub --speed-large-files for compatibility with GNU diff

2017-04-08T08:46:02Z

There is no intention to implement it, but lots of scripts/tools using diff(1) passes GNU diff option

diff(1): document remaining long options

2017-03-23T04:35:52Z

While here, try and tie together some of the short options with their long option equivalents, where possible. Sponsored by: Dell EMC Isilon

diff(1): fix SYNOPSIS section noting non-existent option, --no-ignore-case

2017-03-22T18:13:14Z

`--no-ignore-case` should be `--no-ignore-file-name-case` per code for compatibility with [g]diff(1). Sponsored by: Dell EMC Isilon

diff(1): add --strip-trailing-cr to last example in the SYNOPSIS

2017-03-19T21:49:15Z

This syncs the last example in the SYNOPSIS with the other examples. Reviewed by: bapt Sponsored by: Dell EMC Isilon Differential Revision: D10017

diff(1): sort long options under -D example in SYNOPSYS

2017-03-15T17:54:47Z

Fix wrong date in diff(1)

2017-03-12T03:36:33Z

Reported by: rgrimes