Yet Another Shell

Version 2.49

Suppress compile-time warning from clang 8

Up version to 2.49

Update ja.po

Make nounset option effective in arithmetic expansion

The nounset option should reject unset variables in arithmetic expansion
as well so that the user can get an error when they mistakenly used a
misspelled variable.

This will be a next POSIX requirement:
http://austingroupbugs.net/view.php?id=559

completion/rsync: Complete local pathnames

completion/git: Complete remote refs correctly

Japanese documentation for for-local option (#39372)

completion/set: Complete the for-local option (#39372)

Reorganize tests for for-local option (#39372)

Document the forlocal option as for-local (#39372)

Add the forlocal option (#39372)

Patch contributed by Martijn Dekker.

Expand ""$* to an empty string (#39280)

The words ""$*, ""$@, $*"", and $@"" should expand to an empty string
rather than nothing when there are no positional parameters.

run-test: Don't use function before defined

The eprintf function should be used after it is defined.

Update test README (#38894)

run-test: Use symlink to invoke testee as sh

We now create a symlink named "sh" that resolves to the testee shell. By
invoking the shell via the symlink, we can invoke the shell as "sh"
without depending on the non-standard "-a" option of the "exec"
built-in.

run-test: Redirect stdin to /dev/null rather than closing

For standard utilities to work as specified in POSIX, stdin should be
open even if it is unused.

tests/input-p: Use testee to test input consumption

The "head" utility on FreeBSD seems to consume more lines than expected.

tests/umask-p: Don't use XSI extension of ls

The "-g" and "-o" options of the "ls" utility are XSI extensions. We
should be using the more portable "-l" option.

tests/summarize: Don't abort if no tests passed

The "grep" command returns an exit status of zero if there is no
successful test. This should not cause the "summarize.sh" script to
abort due to the "errexit" shell option.

tests/printf-y: Succeed on FreeBSD

On FreeBSD, the "wc -l" command prints blanks before the line count,
causing a false test failure.

We now use the "grep" command to ensure the line printed by "printf" is
not empty.

Seed $RANDOM more randomly

Now the $RANDOM variable is seeded with time as well as the process ID.

Expand $RANDOM to value less than 32768

The $RANDOM variable should expand to a value within the range
[0, 32767]. Previously, the variable was possibly expanding to a larger
value.

More stable test (#37560)

The dummy sleep commands should make it more likely for the SIGCHLD
signal to be caught early enough.

Split long tests (#38894)

By splitting test files, the "make check" command can run faster if the
"make" command supports parallel build and the machine has many CPU
cores.

historyx-y.tst -> history[1-2]-y.tst
signal1-y.tst -> signal[1-5]-y.tst
signal2-y.tst -> signal[6-9].y.tst
test-y.tst -> test[1-2]-y.tst

ptwrap: Remove unnecessary operations (#38894)

In our use case, ptwrap does not have to pass stdin or the window size
to the child process.

Parallelize tty-requiring tests (#38894)

Add ptwrap source (#38894)

The file is copied from:
https://github.com/magicant/pseudo-terminal-wrapper/blob/2f222cd8de9b04c3a510c896dfd76cadafe02bd0/ptwrap.c

Use %REQUIRETTY% instead of %SEQUENTIAL% (#38894)

We are going to run job-control-related tests in parallel. The keyword
"%REQUIRETTY%" will be inappropriate then.

completion/INIT: Consider $PATHEXT for Cygwin (#38878)