lib/sh/util.sh: errors, debugging: moved after datatype sections so their functions can use these

bugfix: lib/sh/util.sh: canon_rel_path() stub: proper no-op requires passing through original path

lib/sh/util.sh: canon_rel_path(): fall back to original path if can't resolve, instead of errexiting

bugfix: lib/sh/util.sh: canon_rel_path(): don't re-localize $path because this clears it

lib/sh/util.sh: canon_rel_path(): import $1 to $path before function body, so that the function body can be moved to a nested function

lib/sh/util.sh: added canon_rel_path() stub for use by debugging functions

lib/sh/util.sh: moved func_loc() to before debugging section so it can be used by debugging functions

bugfix: lib/sh/util.sh: command__exec(): need to restore $verbosity before calling die_e

lib/sh/util.sh: echo_vars(): merge repeated flags so there aren't flags in between the vars (which is also not valid declare syntax)

lib/sh/util.sh: echo_vars(): put all the vars on the same line so they don't clutter up the call graph generated at the default verbosity

lib/sh/util.sh: cd(): use echo_run instead of a manual echo_cmd call

fix: lib/sh/util.sh: cd(): indent after running cd rather than before

lib/sh/util.sh: cd(): support rebasing path vars for the new dir

bugfix: lib/sh/util.sh: str2varname(): need to lowercase str because on case-insensitive filesystems, paths sometimes canonicalize to a different capitalization than the original

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

bugfix: lib/sh/util.sh: die(): need stub since this is invoked before it's defined

bugfix: lib/sh/util.sh: setup_log_fd(): don't change $log_fd to stdlog until stdlog is set up, to avoid "Bad file descriptor" errors

lib/sh/util.sh: func_override(), copy_func(): added echo_func to facilitate debugging

bugfix: lib/sh/util.sh: stubs: log++ alias also needs to be moved to stub section

lib/sh/util.sh: import_vars: documented that it's idempotent

bugfix: lib/sh/util.sh: stderr_matches(): support $benign_error properly, by handling exit status logging in this func instead

bugfix: lib/sh/util.sh: stderr_matches(): need to separately display errors that were incorrectly suppressed due to $benign_error

bugfix: lib/sh/util.sh: is_err(): rethrow must be inverted (rethrow->false if error)

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

fix: lib/sh/util.sh: stderr_matches(): usage: documented that this may require benign_error=1

bugfix: lib/sh/util.sh: highlight_log_msg(): when not can_highlight_log_msg, need to remove any surrounding formatting

fix: lib/sh/util.sh: die_error_hidden(): always log local vars at same log_level as echo_func

lib/sh/util.sh: split_lines(): usage: matched up and synced different syntaxes

bugfix: lib/sh/util.sh: log_msg!(): split_lines does not support being invoked by wrapper; need to use `declare lines; wrapper "split_lines" str` instead

fix: lib/sh/util.sh: split_lines(): usage: documented different syntax for when using wrapper

bugfix: lib/sh/util.sh: die_error_hidden(): echo_func to assist debugging

bugfix: lib/sh/util.sh: split(): need to limit the effects of IFS to just the splitting, so it doesn't cause strange errors in other functions

bugfix: stderr2stdout(): fd 2 must be redirected back to fd 2, not log-filtered, in case there are other errors in addition to the benign error. this fixes a bug in pg_schema_exists(), where errors about the DB being down were not displayed because they were log-filtered out.

bugfix: lib/sh/util.sh: `type` calls: need -- before cmd in case it starts with -

lib/sh/util.sh: cmd2rel_path: use is_extern()

lib/sh/util.sh: try: usage: added location of finally block

bugfix: lib/sh/util.sh: type(): need to handle options before command name

lib/sh/util.sh: added 1st_non_opt()

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

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

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/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

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