# Bash

export SHELL=/bin/bash

# Implicitly export everything.

# OFF for now, because it breaks extglob (regex glob), as in the 'rc_push' function in

# the 'git' numbered script.

# set -a

# Print source lines as they are executed.

# set -x

# Color

# Colored GCC warnings and errors.

export TERM=xterm-256color

export COLORTERM=truecolor

eval "$(dircolors)"

# Misc global settings

# Enable regex glob.

# - Syntax (regex). E.g.: ls /tmp/file. ([0-9])

shopt -s extglob

# Enable recursive directory glob.

# - Syntax: `**` expands recursively to all matching nested paths.

# - E.g.:

# -- All files and dirs: printf '%s\n' **

# -- All dirs: printf '%s\n' **/

# -- All .myext files in all dirs: printf '%s\n' **/*.myext

# - I don't think there's a way to match all files without also matching all dirs?

# - `**` can be used with a partial dir name, but each parent dir must match the glob,

# so `x**` will not match `x1/x2/y/x3`. Instead, combine `**`, with regular `*` glob.

# - E.g.:

# -- All dirs with names starting with `x` (regardless of parent names):

# printf '%s\n'**/x*/

shopt -s globstar

# Enable glob that does not match anything to return an error instead of falling back to

# being interpreted as a literal dir or file name.

# - Fallback to literal name is confusing, and never what one wants, since wildcard

# characters (`*`, `?`) are avoided in dir and path names. Actually, they're pretty much

# only needed in literal context to fix errors caused by not using `failglob` :)

# - To pass globs and wildcard characters to commands without triggering the error,

# single quote them.

# - E.g.:

# - `vim *.py` returns an error if there are no `.py` files in the current dir instead

shopt -s failglob

# Enable glob that does match anything to fall back to zero arguments (an empty array)

# instead of a literal dir or file name.

# - Not enabled by default, as I think `failglob` is a much better way to handle

# non-matching globs.

# shopt -s nullglob

# Enable matching dot-files with `*`.

# - Not enabled by default, as it's often convenient to not have dot files (which are

# usually 'invisible'), included in globs. WITHOUT dotglob, use two globs to include

# dot files, and combine with brace expansion (which is done before globbing) to avoid

# repeating a directory path. E.g.,:

# WITHOUT dotglob: printf '%s\n' a/b/c/{.*,*}

# shopt -s dotglob

# Enable matching dot-files without matching '.' and '..'

# E.g.:

# All dot files in current dir (.config, .bashrc, etc), but not `.` (this dir itself) or

# `..` (parent dir):

# printf '%s\n' .*

GLOBIGNORE=.:..

# Check the window size after each command and, if necessary,

# update the values of LINES and COLUMNS.

shopt -s checkwinsize

# CD into a directory by typing just the name

shopt -s autocd

# History

# Don't put duplicate lines or lines starting with space in the history

HISTCONTROL=ignoreboth:erasedups

# Append to the history file, don't overwrite it

# The default HISTCONTROL setting normally includes "ignoreboth", which causes lines

# starting with one or more spaces not to be added to the history. Since leading spaces

# are often included accidentally when copy/pasting commands into the shell, it's

# removed here.

HISTCONTROL=erasedups

# Append to the history file, don't overwrite it.

shopt -s histappend

# History length

HISTSIZE=1000

HISTFILESIZE=2000

# Include timestamps

HISTTIMEFORMAT='%Y-%m-%d %H:%M:%s '

# Check the window size after each command and, if necessary,

# update the values of LINES and COLUMNS.

shopt -s checkwinsize

# The pattern "**" used in a pathname expansion context will match all files and zero or

# more directories and subdirectories.

# CD into a directory by typing just the name

shopt -s autocd

# set bash option

# https://www.gnu.org/software/bash/manual/html_node/The-Set-Builtin.html

declare -A set_opt=([exit_on_error]='e' [print_trace]='x')

set_opt() {

}