Better check against st_size == 0 instead of st_dev == -1

PR/57854: Richardo Branco: wc -c does not work on procfs/kernfs

Use __dead

Report the number of characters, not the number of bytes in the
longest line.

Problem pointed out by YAMAMOTO Takashi on "tech-userlevel" mailing list.

Add support for "-L" option (longest line) as present in the GNU and
FreeBSD version of "wc".

No objections on "tech-userlevel" mailing list.

Fix WARNS=4 issues (-Wshadow -Wcast-qual)

Remove the \n and tabs from the __COPYRIGHT() strings.
Tweak to use a consistent format.

de-__P, ANSIfy prototypes

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22365, verified by myself.

Mention -m in usage. bin/16594 by Ryan Younce.

Don't pass NULL to warn() etc. Instead, use "<stdin>" to warn about stdin.

Actually skip the first byte of invalid byte sequence.

One more; Don't put space before function call op.

- Remove unnecessary cast.
- Other misc. KNF changes.

Fix whitespace usage.

Don't include same file twice. Sort includes alphabetically.
Don't place sys/*.h and *.h mixed.

- implement -m.(count characters instead of bytes)
- use iswspace instead of isspace for -w.

Normalize usage string.

Don't print a trailing space when counting from stdin.

Make the output format match what it used to be.

Quad portability fixes:
- Use %llu instead of %qu
- Don't use quad types if NO_QUAD is defined
- Always cast to the appropriate type in printf.

Hopefully somebody better at this than I can correct this somewhat
iffy change. The problem with the last checkin is twofold- first %q
should refer to quad_t, not u_int64_r. Second, for the alpha com

Hopefully somebody better at this than I can correct this somewhat
iffy change. The problem with the last checkin is twofold- first %q
should refer to quad_t, not u_int64_r. Second, for the alpha compiler,
%q is taken to be 'long long'- which is definitely not the same as
u_int64_t. Take home lesson- didn't build on alpha.

I thought about an #ifdef __alpha__- but that's wrong, so I put in a runtime
determinant to set a constant format string. Like I said, I hope somebody
better than I can fix it right.

show more ...

use u_int64_t for line, word, and character counts. It bothers me to see wc -c
return -2146435072 characters for files > 2G.

Use unsigned long instead of ulong

WARNSify; deprecate register; clean up .Nm