CVS log for src/usr.bin/seq/seq.c

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Default branch: MAIN

Bail if increment is too small for the precision to avoid an infinite loop.

Chose better number format.

seq.c: replace non-standard `\e` with standard compliant `\x1B`

Sync with HEAD

Sync with HEAD, resolve a few conflicts

- Default terminator to \n
- Don't print a trailing separator
Behavior now matches GNU seq (from Aram at tech-userlevel)

The sign is optional in an exponent

Treat numbers after [Ee] as a positive number rather than an invalid
numeric sequence.  (Taken from FreeBSD but done differently.)

Fix typos (from FreeBSD)

Drop main() prototype.

Rerun valid_format() both before and after unescaping the format
string, in case the format string contains printf conversions
assembled from escape sequences.

A better approach might be to adjust the unescape logic to avoid
generating printf conversions (e.g. convert \x25 to %% instead of %)
but that's somewhat problematic and it's not really worth taking the
trouble.

Running valid_format() only after unescaping would also be somewhat
tidier but makes printing the invalid format string problematic,
because the unescape logic runs in place.

None of these cases are really worth worrying about in detail, but now
at least they don't result in SIGSEGV.

Related to PR 43355.

Fix valid_format() to be more careful about allowing only valid printf
formats.

Also, accept %a and %A, which are new since this logic was last updated,
and also allow %F even though it's not functionally different from %f.
Document these additions and bump date of man page.

Fixes PR 43355.

Sync with wrstuden-revivesa-base-2.

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

sync with head.

Remove clause 3 and 4 from TNF licenses

sync with HEAD

Fix problem with handling escaped octal and hexadecimal sequences in the -f
format option.  The problem is that the next character after such an escape
was not copied to the output.

Sync usage with man page.

seq(1) - print sequences of numbers