lib/sh/util.sh: unalias(): use self_builtin, which is now defined before it

bugfix: lib/sh/util.sh: commands: `type` calls: need to account for the fact that any alias is already expanded

lib/sh/util.sh: functions: moved before commands since commands are more complex

lib/sh/sync.sh: db_copy() and callers: pass args as rsync options

fix: lib/sh/sync.sh: db_copy(): need to exclude files which prevent tape backup

lib/sh/db.sh: added pg_ctl(), pg_snapshot()

lib/sh/sync.sh: db_snapshot(): copy changes before stopping DB to minimize the time that it's shut down

lib/sh/sync.sh: db_snapshot(): factored copy operation out into separate db_copy() function

lib/sh/db.sh: mysql_snapshot(): use new db_snapshot()

lib/sh/sync.sh: added db_snapshot()

lib/sh/db.sh: mysql_snapshot(): for large files, don't re-copy entire file

lib/sh/db.sh: mysql_snapshot(): use live mode as the default

fix: lib/sh/db.sh: mysql_snapshot(): need to create dest dir if doesn't exist

bugfix: lib/sh/db.sh: mysql_snapshot(): try: need to use split syntax with prep_try instead, to work with prefix vars

bugfix: lib/sh/db.sh: mysql_snapshot(): try: need to use split syntax with prep_try instead, to work with prefix vars

fix: lib/sh/util.sh: try usage: documented that the split syntax with prep_try is meant to be used with vars before the cmd

fix: lib/sh/util.sh: echo_vars(): also need to print unset vars (including unset kw_params)

lib/sh/util.sh: echo_vars(): put loop var on same line as `for`

bugfix: lib/sh/util.sh: sudo(): need to preserve PATH separately because -E does not preserve this

lib/sh/util.sh: echo_redirs_cmd(): inline the function alias since it's only used in one place

bugfix: lib/sh/util.sh: redir(): need to load new aliases before it

lib/sh/util.sh: echo_redirs_cmd(): log $PATH to facilitate troubleshooting

lib/sh/util.sh: echo_redirs_cmd(): documented what the $(...) section does

lib/sh/util.sh: echo_redirs_cmd(): moved comment about <>file redirs to line that it applies to

lib/sh/util.sh: moved echo_redirs_cmd() to right before redir() which uses it

lib/sh/util.sh: catch(): log at higher log_level, since this is internal code

fix: lib/sh/util.sh: die_e(): treat SIGPIPE as benign error

lib/sh/util.sh: removed no longer used ignore_sig(). use ignore() instead, which now supports SIG*.

lib/sh/util.sh: piped_cmd(): use ignore, which now supports SIG*

lib/sh/util.sh: signals: catch(): added echo_func

lib/sh/util.sh: set_global_fds(): debug to global stderr in case stderr filtered

lib/sh/util.sh: debugging: use configurable debug_fd (set to $err_fd)

lib/sh/util.sh: signals: override catch() to support SIG* as exception type

lib/sh/util.sh: moved primitives sections before more complex sections that depend on them

lib/sh/util.sh: 2nd functions section: moved to 1st functions section

bugfix: lib/sh/util.sh: added workaround for bash bug where exit sometimes inxeplicably ignores $?

fix: lib/sh/util.sh: self_builtin: avoid $() so that $? isn't modified

lib/sh/util.sh: use new self_builtin

lib/sh/util.sh: added self_builtin

lib/sh/util.sh: pv(), pf(): moved to debugging section

bugfix: lib/sh/util.sh: stderr_matches(): also need to handle any filter error, such as caused by Ctrl+C

lib/sh/util.sh: stderr_matches(): echo_vars @PIPESTATUS_ to assist debugging

bugfix: lib/sh/util.sh: stderr2stdout(): use piped_cmd to ignore SIGPIPE since the output of this will piped to another command

lib/sh/util.sh: setup_log_fd(): $log_fd: use 3 (stdlog) since other scripts are likely to use this for logging as well

fix: lib/sh/util.sh: setup_log_fd(): fd_set_default(): use $log_fd instead of repeating the value of it

lib/sh/util.sh: die(): log at higher log_level, since this is logging code

lib/sh/util.sh: highlight_log_msg(): log at higher log_level, since this is logging code

bugfix: lib/sh/util.sh: stderr_matches(): only set benign_error=1 if the matched error occurred

lib/sh/util.sh: ignore_e(): also set benign_error=1

fix: lib/sh/util.sh: prep_try alias: removed inaccurate comment

bugfix: lib/sh/util.sh: stdout2fd(): moved after redir() which it depends on

fix: lib/sh/util.sh: command(): moved `|| die_e` to command__exec so it would be properly indented under the echoed command

lib/sh/util.sh: verbosity_compat(): log at higher log_level because it's logging code

lib/sh/util.sh: $benign_error: log at higher log_level because it's logging code

lib/sh/util.sh: $top_* vars, $is_outermost: log at higher log_level because it's startup code

lib/sh/util.sh: $top_script: echo_vars this like the other $top_* vars

lib/sh/util.sh: .(): log at higher log_level because it's startup code

lib/sh/util.sh: is_dot_script(): run with higher log_level since this is run at the beginning of the script

lib/sh/util.sh, runscripts/util.run: set_paths(): run with higher log_level to hide all the paths that are set at the beginning of the script

lib/sh/util.sh: added log++ stub

lib/sh/util.sh: added log_local stub

lib/sh/util.sh: added log() stub so internal commands can use it

fix: lib/sh/util.sh: echo_vars(): log at same log_level as echo_func so kw_params are displayed along with positional params

fix: lib/sh/util.sh: rel_path(): log this internal command at a higher log_level so it's normally hidden

fix: lib/sh/util.sh: log_msg!(): log split_lines at a higher log_level so it's normally hidden

bugfix: lib/sh/util.sh: stderr_matches(): `log_local; log++` should apply to just stdout_contains() and part of stderr2stdout() rather than all of stderr_matches()

lib/sh/util.sh: stderr_matches(): run at higher log_level because error-handling internals should not be logged by default

bugfix: lib/sh/db.sh: mysql_ctl(): need to ignore errors if not running

bugfix: lib/sh/util.sh: stderr_matches(): handle any error: only ignore_e if the error exit status was associated with the matched error message

bugfix: lib/sh/util.sh: stderr_matches(): handle any error: need force-exit with rethrow_exit() because caller's test of return status disables errexit

lib/sh/util.sh: added rethrow_exit(), which exits even where errexit is disabled

bugfix: lib/sh/db.sh: mysql_snapshot(): need to run `mysql_ctl start` even if there is an error

lib/sh/db.sh: mysql_snapshot(): $to: default to $from.bak

lib/sh/db.sh: added mysql_snapshot()

lib/sh/db.sh: added mysql_ctl()

lib/sh/db.sh: pg_cmd(): updated to use new sudo()

lib/sh/util.sh: sudo alias: use function instead so this can be overridden

lib/sh/util.sh: added is_intern()

lib/sh/util.sh: is_callable(): use just $1 because multiple args are not applicable

lib/sh/util.sh: added is_world_executable()

lib/sh/util.sh: added has_perms()

lib/sh/util.sh: esc_args(): renamed to just esc() because this can also be used on a single value

lib/sh/util.sh: added is_extern()

lib/sh/util.sh: added sudo alias to alias-expand command

lib/sh/db.sh: pg_cmd(): $as_root: use $sudo

lib/sh/util.sh: added $sudo

lib/sh/util.sh: added cp alias

lib/sh/db.sh: removed no longer used pg_as_root(), which was buggy anyway. use `as_root=1 ...` instead.

lib/sh/db.sh: mysql_ANSI: fixed comment

lib/sh/db.sh: pg_dump(): support dumping entire cluster, and cluster users

lib/sh/db.sh: pg_cmd(): added $as_root switch

lib/sh/db.sh pg_dump(), bin/pg_dump_vegbien: --format=plain: removed comment that this is the plain format, because this is now self-documenting

lib/sh/db.sh pg_dump(), bin/pg_dump_vegbien: --format: use the long form of the formats to make the code self-documenting

bugfix: lib/sh/util.sh: local_array/export_array: do need -a because that it's an array is apparently not autodetected by the () on Mac

lib/sh/util.sh: import_vars: documented that vars already set will not be overwritten

lib/sh/util.sh: removed end_try_subshell, which now does the same thing as end_try

fix: lib/sh/archives.sh: unzip(): support -p option, which pipes extracted data to stdout

fix: lib/sh/make.sh: direct the user to use begin_target instead of set_make_vars (set_make_vars is now used by begin_target)

bugfix: lib/sh/util.sh: die(): usage: documented that if msg uses $(...), save_e is needed

bugfix: lib/sh/util.sh: already_exists_msg(): need to save_e, because new $(mk_hint) call resets $?