From 55fa988f6f8316918f8a1a5a901b0561467c1b77 Mon Sep 17 00:00:00 2001
From: Mitsuo Tokumori <mitsuo@tokumori.xyz>
Date: Wed, 4 Jun 2025 01:03:45 +0900
Subject: Create extra/ and minimal/

minimal/ should be a minimal subset of public/  to be used when
installing configuration files on a VPS or VM.

Move .git-prompt.sh to extra to be sym-linked both in public/ and
minimal/
---
 extra/.git-prompt.sh           | 589 ++++++++++++++++++++++++++++++++++++++++
 minimal/.bash_aliases          |  24 ++
 minimal/.bashrc                |  42 +++
 minimal/.config/nvim/init.vim  |  56 ++++
 minimal/.config/tmux/tmux.conf |  62 +++++
 minimal/.git-prompt.sh         |   1 +
 minimal/.inputrc               |  17 ++
 minimal_linking_example.sh     |  21 ++
 public/.config/tmux/tmux.conf  |   6 +-
 public/.git-prompt.sh          | 590 +----------------------------------------
 10 files changed, 814 insertions(+), 594 deletions(-)
 create mode 100644 extra/.git-prompt.sh
 create mode 100644 minimal/.bash_aliases
 create mode 100644 minimal/.bashrc
 create mode 100644 minimal/.config/nvim/init.vim
 create mode 100644 minimal/.config/tmux/tmux.conf
 create mode 120000 minimal/.git-prompt.sh
 create mode 100644 minimal/.inputrc
 create mode 100644 minimal_linking_example.sh
 mode change 100644 => 120000 public/.git-prompt.sh

diff --git a/extra/.git-prompt.sh b/extra/.git-prompt.sh
new file mode 100644
index 0000000..1435548
--- /dev/null
+++ b/extra/.git-prompt.sh
@@ -0,0 +1,589 @@
+# bash/zsh git prompt support
+#
+# Copyright (C) 2006,2007 Shawn O. Pearce <spearce@spearce.org>
+# Distributed under the GNU General Public License, version 2.0.
+#
+# This script allows you to see repository status in your prompt.
+#
+# To enable:
+#
+#    1) Copy this file to somewhere (e.g. ~/.git-prompt.sh).
+#    2) Add the following line to your .bashrc/.zshrc:
+#        source ~/.git-prompt.sh
+#    3a) Change your PS1 to call __git_ps1 as
+#        command-substitution:
+#        Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
+#        ZSH:  setopt PROMPT_SUBST ; PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
+#        the optional argument will be used as format string.
+#    3b) Alternatively, for a slightly faster prompt, __git_ps1 can
+#        be used for PROMPT_COMMAND in Bash or for precmd() in Zsh
+#        with two parameters, <pre> and <post>, which are strings
+#        you would put in $PS1 before and after the status string
+#        generated by the git-prompt machinery.  e.g.
+#        Bash: PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'
+#          will show username, at-sign, host, colon, cwd, then
+#          various status string, followed by dollar and SP, as
+#          your prompt.
+#        ZSH:  precmd () { __git_ps1 "%n" ":%~$ " "|%s" }
+#          will show username, pipe, then various status string,
+#          followed by colon, cwd, dollar and SP, as your prompt.
+#        Optionally, you can supply a third argument with a printf
+#        format string to finetune the output of the branch status
+#
+# The repository status will be displayed only if you are currently in a
+# git repository. The %s token is the placeholder for the shown status.
+#
+# The prompt status always includes the current branch name.
+#
+# In addition, if you set GIT_PS1_SHOWDIRTYSTATE to a nonempty value,
+# unstaged (*) and staged (+) changes will be shown next to the branch
+# name.  You can configure this per-repository with the
+# bash.showDirtyState variable, which defaults to true once
+# GIT_PS1_SHOWDIRTYSTATE is enabled.
+#
+# You can also see if currently something is stashed, by setting
+# GIT_PS1_SHOWSTASHSTATE to a nonempty value. If something is stashed,
+# then a '$' will be shown next to the branch name.
+#
+# If you would like to see if there're untracked files, then you can set
+# GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're untracked
+# files, then a '%' will be shown next to the branch name.  You can
+# configure this per-repository with the bash.showUntrackedFiles
+# variable, which defaults to true once GIT_PS1_SHOWUNTRACKEDFILES is
+# enabled.
+#
+# If you would like to see the difference between HEAD and its upstream,
+# set GIT_PS1_SHOWUPSTREAM="auto".  A "<" indicates you are behind, ">"
+# indicates you are ahead, "<>" indicates you have diverged and "="
+# indicates that there is no difference. You can further control
+# behaviour by setting GIT_PS1_SHOWUPSTREAM to a space-separated list
+# of values:
+#
+#     verbose       show number of commits ahead/behind (+/-) upstream
+#     name          if verbose, then also show the upstream abbrev name
+#     legacy        don't use the '--count' option available in recent
+#                   versions of git-rev-list
+#     git           always compare HEAD to @{upstream}
+#     svn           always compare HEAD to your SVN upstream
+#
+# By default, __git_ps1 will compare HEAD to your SVN upstream if it can
+# find one, or @{upstream} otherwise.  Once you have set
+# GIT_PS1_SHOWUPSTREAM, you can override it on a per-repository basis by
+# setting the bash.showUpstream config variable.
+#
+# You can change the separator between the branch name and the above
+# state symbols by setting GIT_PS1_STATESEPARATOR. The default separator
+# is SP.
+#
+# When there is an in-progress operation such as a merge, rebase,
+# revert, cherry-pick, or bisect, the prompt will include information
+# related to the operation, often in the form "|<OPERATION-NAME>".
+#
+# When the repository has a sparse-checkout, a notification of the form
+# "|SPARSE" will be included in the prompt.  This can be shortened to a
+# single '?' character by setting GIT_PS1_COMPRESSSPARSESTATE, or omitted
+# by setting GIT_PS1_OMITSPARSESTATE.
+#
+# If you would like to see more information about the identity of
+# commits checked out as a detached HEAD, set GIT_PS1_DESCRIBE_STYLE
+# to one of these values:
+#
+#     contains      relative to newer annotated tag (v1.6.3.2~35)
+#     branch        relative to newer tag or branch (master~4)
+#     describe      relative to older annotated tag (v1.6.3.1-13-gdd42c2f)
+#     tag           relative to any older tag (v1.6.3.1-13-gdd42c2f)
+#     default       exactly matching tag
+#
+# If you would like a colored hint about the current dirty state, set
+# GIT_PS1_SHOWCOLORHINTS to a nonempty value. The colors are based on
+# the colored output of "git status -sb" and are available only when
+# using __git_ps1 for PROMPT_COMMAND or precmd in Bash,
+# but always available in Zsh.
+#
+# If you would like __git_ps1 to do nothing in the case when the current
+# directory is set up to be ignored by git, then set
+# GIT_PS1_HIDE_IF_PWD_IGNORED to a nonempty value. Override this on the
+# repository level by setting bash.hideIfPwdIgnored to "false".
+
+# check whether printf supports -v
+__git_printf_supports_v=
+printf -v __git_printf_supports_v -- '%s' yes >/dev/null 2>&1
+
+# stores the divergence from upstream in $p
+# used by GIT_PS1_SHOWUPSTREAM
+__git_ps1_show_upstream ()
+{
+	local key value
+	local svn_remote svn_url_pattern count n
+	local upstream_type=git legacy="" verbose="" name=""
+
+	svn_remote=()
+	# get some config options from git-config
+	local output="$(git config -z --get-regexp '^(svn-remote\..*\.url|bash\.showupstream)$' 2>/dev/null | tr '\0\n' '\n ')"
+	while read -r key value; do
+		case "$key" in
+		bash.showupstream)
+			GIT_PS1_SHOWUPSTREAM="$value"
+			if [[ -z "${GIT_PS1_SHOWUPSTREAM}" ]]; then
+				p=""
+				return
+			fi
+			;;
+		svn-remote.*.url)
+			svn_remote[$((${#svn_remote[@]} + 1))]="$value"
+			svn_url_pattern="$svn_url_pattern\\|$value"
+			upstream_type=svn+git # default upstream type is SVN if available, else git
+			;;
+		esac
+	done <<< "$output"
+
+	# parse configuration values
+	local option
+	for option in ${GIT_PS1_SHOWUPSTREAM}; do
+		case "$option" in
+		git|svn) upstream_type="$option" ;;
+		verbose) verbose=1 ;;
+		legacy)  legacy=1  ;;
+		name)    name=1 ;;
+		esac
+	done
+
+	# Find our upstream type
+	case "$upstream_type" in
+	git)    upstream_type="@{upstream}" ;;
+	svn*)
+		# get the upstream from the "git-svn-id: ..." in a commit message
+		# (git-svn uses essentially the same procedure internally)
+		local -a svn_upstream
+		svn_upstream=($(git log --first-parent -1 \
+					--grep="^git-svn-id: \(${svn_url_pattern#??}\)" 2>/dev/null))
+		if [[ 0 -ne ${#svn_upstream[@]} ]]; then
+			svn_upstream=${svn_upstream[${#svn_upstream[@]} - 2]}
+			svn_upstream=${svn_upstream%@*}
+			local n_stop="${#svn_remote[@]}"
+			for ((n=1; n <= n_stop; n++)); do
+				svn_upstream=${svn_upstream#${svn_remote[$n]}}
+			done
+
+			if [[ -z "$svn_upstream" ]]; then
+				# default branch name for checkouts with no layout:
+				upstream_type=${GIT_SVN_ID:-git-svn}
+			else
+				upstream_type=${svn_upstream#/}
+			fi
+		elif [[ "svn+git" = "$upstream_type" ]]; then
+			upstream_type="@{upstream}"
+		fi
+		;;
+	esac
+
+	# Find how many commits we are ahead/behind our upstream
+	if [[ -z "$legacy" ]]; then
+		count="$(git rev-list --count --left-right \
+				"$upstream_type"...HEAD 2>/dev/null)"
+	else
+		# produce equivalent output to --count for older versions of git
+		local commits
+		if commits="$(git rev-list --left-right "$upstream_type"...HEAD 2>/dev/null)"
+		then
+			local commit behind=0 ahead=0
+			for commit in $commits
+			do
+				case "$commit" in
+				"<"*) ((behind++)) ;;
+				*)    ((ahead++))  ;;
+				esac
+			done
+			count="$behind	$ahead"
+		else
+			count=""
+		fi
+	fi
+
+	# calculate the result
+	if [[ -z "$verbose" ]]; then
+		case "$count" in
+		"") # no upstream
+			p="" ;;
+		"0	0") # equal to upstream
+			p="=" ;;
+		"0	"*) # ahead of upstream
+			p=">" ;;
+		*"	0") # behind upstream
+			p="<" ;;
+		*)	    # diverged from upstream
+			p="<>" ;;
+		esac
+	else # verbose, set upstream instead of p
+		case "$count" in
+		"") # no upstream
+			upstream="" ;;
+		"0	0") # equal to upstream
+			upstream="|u=" ;;
+		"0	"*) # ahead of upstream
+			upstream="|u+${count#0	}" ;;
+		*"	0") # behind upstream
+			upstream="|u-${count%	0}" ;;
+		*)	    # diverged from upstream
+			upstream="|u+${count#*	}-${count%	*}" ;;
+		esac
+		if [[ -n "$count" && -n "$name" ]]; then
+			__git_ps1_upstream_name=$(git rev-parse \
+				--abbrev-ref "$upstream_type" 2>/dev/null)
+			if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
+				upstream="$upstream \${__git_ps1_upstream_name}"
+			else
+				upstream="$upstream ${__git_ps1_upstream_name}"
+				# not needed anymore; keep user's
+				# environment clean
+				unset __git_ps1_upstream_name
+			fi
+		fi
+	fi
+
+}
+
+# Helper function that is meant to be called from __git_ps1.  It
+# injects color codes into the appropriate gitstring variables used
+# to build a gitstring. Colored variables are responsible for clearing
+# their own color.
+__git_ps1_colorize_gitstring ()
+{
+	if [[ -n ${ZSH_VERSION-} ]]; then
+		local c_red='%F{red}'
+		local c_green='%F{green}'
+		local c_lblue='%F{blue}'
+		local c_clear='%f'
+	else
+		# Using \[ and \] around colors is necessary to prevent
+		# issues with command line editing/browsing/completion!
+		local c_red='\[\e[31m\]'
+		local c_green='\[\e[32m\]'
+		local c_lblue='\[\e[1;34m\]'
+		local c_clear='\[\e[0m\]'
+	fi
+	local bad_color=$c_red
+	local ok_color=$c_green
+	local flags_color="$c_lblue"
+
+	local branch_color=""
+	if [ $detached = no ]; then
+		branch_color="$ok_color"
+	else
+		branch_color="$bad_color"
+	fi
+	if [ -n "$c" ]; then
+		c="$branch_color$c$c_clear"
+	fi
+	b="$branch_color$b$c_clear"
+
+	if [ -n "$w" ]; then
+		w="$bad_color$w$c_clear"
+	fi
+	if [ -n "$i" ]; then
+		i="$ok_color$i$c_clear"
+	fi
+	if [ -n "$s" ]; then
+		s="$flags_color$s$c_clear"
+	fi
+	if [ -n "$u" ]; then
+		u="$bad_color$u$c_clear"
+	fi
+}
+
+# Helper function to read the first line of a file into a variable.
+# __git_eread requires 2 arguments, the file path and the name of the
+# variable, in that order.
+__git_eread ()
+{
+	test -r "$1" && IFS=$'\r\n' read "$2" <"$1"
+}
+
+# see if a cherry-pick or revert is in progress, if the user has committed a
+# conflict resolution with 'git commit' in the middle of a sequence of picks or
+# reverts then CHERRY_PICK_HEAD/REVERT_HEAD will not exist so we have to read
+# the todo file.
+__git_sequencer_status ()
+{
+	local todo
+	if test -f "$g/CHERRY_PICK_HEAD"
+	then
+		r="|CHERRY-PICKING"
+		return 0;
+	elif test -f "$g/REVERT_HEAD"
+	then
+		r="|REVERTING"
+		return 0;
+	elif __git_eread "$g/sequencer/todo" todo
+	then
+		case "$todo" in
+		p[\ \	]|pick[\ \	]*)
+			r="|CHERRY-PICKING"
+			return 0
+		;;
+		revert[\ \	]*)
+			r="|REVERTING"
+			return 0
+		;;
+		esac
+	fi
+	return 1
+}
+
+# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
+# when called from PS1 using command substitution
+# in this mode it prints text to add to bash PS1 prompt (includes branch name)
+#
+# __git_ps1 requires 2 or 3 arguments when called from PROMPT_COMMAND (pc)
+# in that case it _sets_ PS1. The arguments are parts of a PS1 string.
+# when two arguments are given, the first is prepended and the second appended
+# to the state string when assigned to PS1.
+# The optional third parameter will be used as printf format string to further
+# customize the output of the git-status string.
+# In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
+__git_ps1 ()
+{
+	# preserve exit status
+	local exit=$?
+	local pcmode=no
+	local detached=no
+	local ps1pc_start='\u@\h:\w '
+	local ps1pc_end='\$ '
+	local printf_format=' (%s)'
+
+	case "$#" in
+		2|3)	pcmode=yes
+			ps1pc_start="$1"
+			ps1pc_end="$2"
+			printf_format="${3:-$printf_format}"
+			# set PS1 to a plain prompt so that we can
+			# simply return early if the prompt should not
+			# be decorated
+			PS1="$ps1pc_start$ps1pc_end"
+		;;
+		0|1)	printf_format="${1:-$printf_format}"
+		;;
+		*)	return $exit
+		;;
+	esac
+
+	# ps1_expanded:  This variable is set to 'yes' if the shell
+	# subjects the value of PS1 to parameter expansion:
+	#
+	#   * bash does unless the promptvars option is disabled
+	#   * zsh does not unless the PROMPT_SUBST option is set
+	#   * POSIX shells always do
+	#
+	# If the shell would expand the contents of PS1 when drawing
+	# the prompt, a raw ref name must not be included in PS1.
+	# This protects the user from arbitrary code execution via
+	# specially crafted ref names.  For example, a ref named
+	# 'refs/heads/$(IFS=_;cmd=sudo_rm_-rf_/;$cmd)' might cause the
+	# shell to execute 'sudo rm -rf /' when the prompt is drawn.
+	#
+	# Instead, the ref name should be placed in a separate global
+	# variable (in the __git_ps1_* namespace to avoid colliding
+	# with the user's environment) and that variable should be
+	# referenced from PS1.  For example:
+	#
+	#     __git_ps1_foo=$(do_something_to_get_ref_name)
+	#     PS1="...stuff...\${__git_ps1_foo}...stuff..."
+	#
+	# If the shell does not expand the contents of PS1, the raw
+	# ref name must be included in PS1.
+	#
+	# The value of this variable is only relevant when in pcmode.
+	#
+	# Assume that the shell follows the POSIX specification and
+	# expands PS1 unless determined otherwise.  (This is more
+	# likely to be correct if the user has a non-bash, non-zsh
+	# shell and safer than the alternative if the assumption is
+	# incorrect.)
+	#
+	local ps1_expanded=yes
+	[ -z "${ZSH_VERSION-}" ] || [[ -o PROMPT_SUBST ]] || ps1_expanded=no
+	[ -z "${BASH_VERSION-}" ] || shopt -q promptvars || ps1_expanded=no
+
+	local repo_info rev_parse_exit_code
+	repo_info="$(git rev-parse --git-dir --is-inside-git-dir \
+		--is-bare-repository --is-inside-work-tree \
+		--short HEAD 2>/dev/null)"
+	rev_parse_exit_code="$?"
+
+	if [ -z "$repo_info" ]; then
+		return $exit
+	fi
+
+	local short_sha=""
+	if [ "$rev_parse_exit_code" = "0" ]; then
+		short_sha="${repo_info##*$'\n'}"
+		repo_info="${repo_info%$'\n'*}"
+	fi
+	local inside_worktree="${repo_info##*$'\n'}"
+	repo_info="${repo_info%$'\n'*}"
+	local bare_repo="${repo_info##*$'\n'}"
+	repo_info="${repo_info%$'\n'*}"
+	local inside_gitdir="${repo_info##*$'\n'}"
+	local g="${repo_info%$'\n'*}"
+
+	if [ "true" = "$inside_worktree" ] &&
+	   [ -n "${GIT_PS1_HIDE_IF_PWD_IGNORED-}" ] &&
+	   [ "$(git config --bool bash.hideIfPwdIgnored)" != "false" ] &&
+	   git check-ignore -q .
+	then
+		return $exit
+	fi
+
+	local sparse=""
+	if [ -z "${GIT_PS1_COMPRESSSPARSESTATE-}" ] &&
+	   [ -z "${GIT_PS1_OMITSPARSESTATE-}" ] &&
+	   [ "$(git config --bool core.sparseCheckout)" = "true" ]; then
+		sparse="|SPARSE"
+	fi
+
+	local r=""
+	local b=""
+	local step=""
+	local total=""
+	if [ -d "$g/rebase-merge" ]; then
+		__git_eread "$g/rebase-merge/head-name" b
+		__git_eread "$g/rebase-merge/msgnum" step
+		__git_eread "$g/rebase-merge/end" total
+		r="|REBASE"
+	else
+		if [ -d "$g/rebase-apply" ]; then
+			__git_eread "$g/rebase-apply/next" step
+			__git_eread "$g/rebase-apply/last" total
+			if [ -f "$g/rebase-apply/rebasing" ]; then
+				__git_eread "$g/rebase-apply/head-name" b
+				r="|REBASE"
+			elif [ -f "$g/rebase-apply/applying" ]; then
+				r="|AM"
+			else
+				r="|AM/REBASE"
+			fi
+		elif [ -f "$g/MERGE_HEAD" ]; then
+			r="|MERGING"
+		elif __git_sequencer_status; then
+			:
+		elif [ -f "$g/BISECT_LOG" ]; then
+			r="|BISECTING"
+		fi
+
+		if [ -n "$b" ]; then
+			:
+		elif [ -h "$g/HEAD" ]; then
+			# symlink symbolic ref
+			b="$(git symbolic-ref HEAD 2>/dev/null)"
+		else
+			local head=""
+			if ! __git_eread "$g/HEAD" head; then
+				return $exit
+			fi
+			# is it a symbolic ref?
+			b="${head#ref: }"
+			if [ "$head" = "$b" ]; then
+				detached=yes
+				b="$(
+				case "${GIT_PS1_DESCRIBE_STYLE-}" in
+				(contains)
+					git describe --contains HEAD ;;
+				(branch)
+					git describe --contains --all HEAD ;;
+				(tag)
+					git describe --tags HEAD ;;
+				(describe)
+					git describe HEAD ;;
+				(* | default)
+					git describe --tags --exact-match HEAD ;;
+				esac 2>/dev/null)" ||
+
+				b="$short_sha..."
+				b="($b)"
+			fi
+		fi
+	fi
+
+	if [ -n "$step" ] && [ -n "$total" ]; then
+		r="$r $step/$total"
+	fi
+
+	local w=""
+	local i=""
+	local s=""
+	local u=""
+	local h=""
+	local c=""
+	local p="" # short version of upstream state indicator
+	local upstream="" # verbose version of upstream state indicator
+
+	if [ "true" = "$inside_gitdir" ]; then
+		if [ "true" = "$bare_repo" ]; then
+			c="BARE:"
+		else
+			b="GIT_DIR!"
+		fi
+	elif [ "true" = "$inside_worktree" ]; then
+		if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ] &&
+		   [ "$(git config --bool bash.showDirtyState)" != "false" ]
+		then
+			git diff --no-ext-diff --quiet || w="*"
+			git diff --no-ext-diff --cached --quiet || i="+"
+			if [ -z "$short_sha" ] && [ -z "$i" ]; then
+				i="#"
+			fi
+		fi
+		if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ] &&
+		   git rev-parse --verify --quiet refs/stash >/dev/null
+		then
+			s="$"
+		fi
+
+		if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ] &&
+		   [ "$(git config --bool bash.showUntrackedFiles)" != "false" ] &&
+		   git ls-files --others --exclude-standard --directory --no-empty-directory --error-unmatch -- ':/*' >/dev/null 2>/dev/null
+		then
+			u="%${ZSH_VERSION+%}"
+		fi
+
+		if [ -n "${GIT_PS1_COMPRESSSPARSESTATE-}" ] &&
+		   [ "$(git config --bool core.sparseCheckout)" = "true" ]; then
+			h="?"
+		fi
+
+		if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
+			__git_ps1_show_upstream
+		fi
+	fi
+
+	local z="${GIT_PS1_STATESEPARATOR-" "}"
+
+	b=${b##refs/heads/}
+	if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
+		__git_ps1_branch_name=$b
+		b="\${__git_ps1_branch_name}"
+	fi
+
+	# NO color option unless in PROMPT_COMMAND mode or it's Zsh
+	if [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then
+		if [ $pcmode = yes ] || [ -n "${ZSH_VERSION-}" ]; then
+			__git_ps1_colorize_gitstring
+		fi
+	fi
+
+	local f="$h$w$i$s$u$p"
+	local gitstring="$c$b${f:+$z$f}${sparse}$r${upstream}"
+
+	if [ $pcmode = yes ]; then
+		if [ "${__git_printf_supports_v-}" != yes ]; then
+			gitstring=$(printf -- "$printf_format" "$gitstring")
+		else
+			printf -v gitstring -- "$printf_format" "$gitstring"
+		fi
+		PS1="$ps1pc_start$gitstring$ps1pc_end"
+	else
+		printf -- "$printf_format" "$gitstring"
+	fi
+
+	return $exit
+}
diff --git a/minimal/.bash_aliases b/minimal/.bash_aliases
new file mode 100644
index 0000000..5fc24c5
--- /dev/null
+++ b/minimal/.bash_aliases
@@ -0,0 +1,24 @@
+alias e="$EDITOR"
+alias aliases="$EDITOR ~/.bash_aliases && source ~/.bash_aliases"
+
+# color
+alias diff='diff --color=always'
+alias dir='dir --color=auto'
+alias grep='grep --color=auto -i'       # color case-insensitive
+
+# Sort files by ASCII value (override current locale)
+alias ls='ls --color=auto --group-directories-first --classify'
+alias la='ls -A'
+alias ll='ls -l -h'
+alias lla='ll -A'
+alias ip='ip --color=auto'
+
+# https://missing.csail.mit.edu/2020/version-control/
+alias gitlogpretty='git log --all --graph --decorate --abbrev-commit'
+# https://stackoverflow.com/a/15606995/7498073
+alias gitshowtrackedfiles='git ls-tree -r master --name-only'
+
+# Precautionary (one shouldn't rely on this!)
+#alias rm='rm -I'          # Promt before removing more than 3 files
+#alias mv='mv -i'          # Promt before overwrite
+#alias cp='cp -i'          # same
diff --git a/minimal/.bashrc b/minimal/.bashrc
new file mode 100644
index 0000000..761e585
--- /dev/null
+++ b/minimal/.bashrc
@@ -0,0 +1,42 @@
+#
+# ~/.bashrc
+#
+
+# If not running interactively, don't do anything
+[[ $- != *i* ]] && return
+
+# Bash config
+#export EDITOR=nvim
+#HISTCONTROL=ignoreboth
+#shopt -s histappend
+#HISTSIZE=1000
+#HISTFILESIZE=2000
+#shopt -s checkwinsize
+
+# Alias definitions.
+if [ -f ~/.bash_aliases ]; then
+    . ~/.bash_aliases
+fi
+
+# Disable CTRL+S and CTRL+Q keybindings
+# (used to pause and resume output to terminal)
+# See: https://unix.stackexchange.com/a/137846/347754
+#      https://unix.stackexchange.com/a/73499/347754
+stty -ixon
+
+# Prompt
+# - user@host pwd (git prompt)
+# Ref.: https://stackoverflow.com/a/15398153/7498073
+source ~/.git-prompt.sh
+#PS1='[\u@\h \W]\$ '
+PS1='\[\033[32m\]\u@\h \[\033[35m\]$MSYSTEM \[\033[33m\]\w\[\033[36m\]`__git_ps1`\[\033[0m\]\n$ '
+
+# less
+LESS="-i"                       # ignore case
+LESS+=" -S"                     # don't chop long lines
+LESS+=" -j5"                    # Add 5 context lines
+LESS+=" --RAW-CONTROL-CHARS"
+export LESS
+
+# better `ls` (and other programs like `tree`) colors
+#eval "$(dircolors)"
diff --git a/minimal/.config/nvim/init.vim b/minimal/.config/nvim/init.vim
new file mode 100644
index 0000000..7451e7c
--- /dev/null
+++ b/minimal/.config/nvim/init.vim
@@ -0,0 +1,56 @@
+colorscheme industry
+filetype plugin on
+
+" Command line:
+set cmdheight=1
+set wildmenu
+set wildignore+=*.o,.git,*.class
+
+" Search
+set ignorecase
+set smartcase
+
+" Screen
+set nonumber
+set scrolloff=5         " show a few lines of context
+set colorcolumn=+1      " highlight column after 'textwidth'
+" Add buffer number to the default status line with ruler
+set statusline=%<%f\ %h%m%r%=b%02n\ \ %-14.(%l,%c%V%)\ %P
+
+" Indentation: 4 spaces
+" See also: autoindent, smartindent, cindent, indentexpr
+set tabstop=4           " Each '\t' takes 8 virtual (screen) columns
+set shiftwidth=0        " (Auto)indentation.  Also affects: >>, i_C-T, i_C-D
+set expandtab           " Expand inserted <Tab>s with <Space>
+set smartindent         " Smart indenting when starting a new line
+
+" Formatting: See fo-table
+set formatoptions+=t        " auto-wrap text (when inserting)
+set formatoptions+=c        " auto-wrap comments (when inserting)
+set formatoptions+=q        " Allow formatting of comments with "gq"
+set formatoptions+=j        " Removes comment leader when joining lines
+set formatoptions+=l        " Don't break long lines that are already typed
+set formatoptions+=r        " Insert current leader after <Enter> in Insert mode
+set formatoptions+=p        " Don't break honorifics like Prof. Smith
+set formatoptions+=n        " Recognize numbered lists
+set formatoptions+=o        " Automatically insert the current comment
+                            " leader after `o`.
+
+" Wrap: Auto-break lines longer than 80 colums
+set textwidth=80
+set wrap
+set linebreak       " Don't break words
+
+" Mouse
+set mouse=a         " Enable mouse for all modes
+
+" Buffers
+set hidden          " Allow for hidden modified buffers
+
+set splitbelow splitright
+
+" Mappings (F13 is <S-F1>, don't ask me why)
+map <F7> :tabp<CR>
+map <F8> :tabn<CR>
+map <F19> :bNext<LF>
+map <F20> :bnext<LF>
diff --git a/minimal/.config/tmux/tmux.conf b/minimal/.config/tmux/tmux.conf
new file mode 100644
index 0000000..be38e4c
--- /dev/null
+++ b/minimal/.config/tmux/tmux.conf
@@ -0,0 +1,62 @@
+# Minimal tmux config
+# Ref.: https://thevaluable.dev/tmux-config-mouseless/
+
+# remap prefix from 'C-b' to 'C-a'
+set-option -g prefix C-a
+bind-key C-a send-prefix
+unbind C-b
+
+# Start window numbering at 1
+set -g base-index 1
+setw -g pane-base-index 1
+
+# Navigate history with vi keybindings
+set-window-option -g mode-keys vi
+set -g history-limit 10000
+
+# From NeoVim advice:
+# Fix 'escape-time' from 500ms to 10ms  (better experience in Vim)
+set-option -sg escape-time 10
+# focus-events (idk what this does)
+set-option -g focus-events on
+
+# Vim friendly tmux config
+# Ref.: https://gist.github.com/Lartza/6a7a62466a8a3e436234412d9b1c5066
+
+setw -g monitor-activity on
+set -g visual-activity on
+
+# FIXME: https://unix.stackexchange.com/a/131187/347754
+# y and p as in vim
+bind Escape copy-mode
+unbind p
+bind p paste-buffer
+bind-key -T copy-mode-vi 'v' send -X begin-selection
+bind-key -T copy-mode-vi 'y' send -X copy-selection
+#bind-key -T copy-mode-vi 'Space' send -X halfpage-down
+#bind-key -T copy-mode-vi 'Bspace' send -X halfpage-up
+
+# extra commands for interacting with the ICCCM clipboard
+#bind C-c run "tmux save-buffer - | xclip -i -sel clipboard"
+#bind C-v run "tmux set-buffer \"$(xclip -o -sel clipboard)\"; tmux paste-buffer"
+
+# New panes in the same window maintain the current path
+# Thanks: https://unix.stackexchange.com/a/109255/347754
+bind  %  split-window -h -c "#{pane_current_path}"
+bind '"' split-window -v -c "#{pane_current_path}"
+
+# moving between panes with vim movement keys
+bind h select-pane -L
+bind j select-pane -D
+bind k select-pane -U
+bind l select-pane -R
+
+# moving between windows with vim movement keys
+bind -r C-h select-window -t :-
+bind -r C-l select-window -t :+
+
+# resize panes with vim movement keys
+bind -r H resize-pane -L 5
+bind -r J resize-pane -D 5
+bind -r K resize-pane -U 5
+bind -r L resize-pane -R 5
diff --git a/minimal/.git-prompt.sh b/minimal/.git-prompt.sh
new file mode 120000
index 0000000..2714012
--- /dev/null
+++ b/minimal/.git-prompt.sh
@@ -0,0 +1 @@
+../extra/.git-prompt.sh
\ No newline at end of file
diff --git a/minimal/.inputrc b/minimal/.inputrc
new file mode 100644
index 0000000..fdff05d
--- /dev/null
+++ b/minimal/.inputrc
@@ -0,0 +1,17 @@
+# Set up "vi input mode" in bash
+
+$include /etc/inputrc
+set editing-mode vi
+$if mode=vi
+
+set show-mode-in-prompt on
+set vi-ins-mode-string \1\e[6 q\2
+set vi-cmd-mode-string \1\e[2 q\2
+
+set keymap vi-command
+Control-l: clear-screen
+
+set keymap vi-insert
+Control-l: clear-screen
+
+$endif
diff --git a/minimal_linking_example.sh b/minimal_linking_example.sh
new file mode 100644
index 0000000..e28b4ad
--- /dev/null
+++ b/minimal_linking_example.sh
@@ -0,0 +1,21 @@
+# I don't maintain this file, use it ONLY AS REFERENCE
+#
+# WARNINGS:
+# * if $HOME contains spaces this breaks
+# * `ln -sf` overwrites the destination files
+#
+# you can play with ln options (e.g., `ln -siv`)
+
+target=$HOME/dotfiles/minimal
+dest=$HOME
+
+cd $dest
+ln -sf $target/.inputrc
+ln -sf $target/.git-prompt.sh
+ln -sf $target/.bashrc
+ln -sf $target/.bash_aliases
+cd $dest/.config
+ln -sf $target/.config/git
+ln -sf $target/.config/locale.conf
+ln -sf $target/.config/nvim
+ln -sf $target/.config/tmux
diff --git a/public/.config/tmux/tmux.conf b/public/.config/tmux/tmux.conf
index e5a3e66..be38e4c 100644
--- a/public/.config/tmux/tmux.conf
+++ b/public/.config/tmux/tmux.conf
@@ -40,11 +40,7 @@ bind-key -T copy-mode-vi 'y' send -X copy-selection
 #bind C-c run "tmux save-buffer - | xclip -i -sel clipboard"
 #bind C-v run "tmux set-buffer \"$(xclip -o -sel clipboard)\"; tmux paste-buffer"
 
-# easy-to-remember split pane commands
-#bind | split-window -h
-#bind - split-window -v
-#unbind '"'
-#unbind %
+# New panes in the same window maintain the current path
 # Thanks: https://unix.stackexchange.com/a/109255/347754
 bind  %  split-window -h -c "#{pane_current_path}"
 bind '"' split-window -v -c "#{pane_current_path}"
diff --git a/public/.git-prompt.sh b/public/.git-prompt.sh
deleted file mode 100644
index 1435548..0000000
--- a/public/.git-prompt.sh
+++ /dev/null
@@ -1,589 +0,0 @@
-# bash/zsh git prompt support
-#
-# Copyright (C) 2006,2007 Shawn O. Pearce <spearce@spearce.org>
-# Distributed under the GNU General Public License, version 2.0.
-#
-# This script allows you to see repository status in your prompt.
-#
-# To enable:
-#
-#    1) Copy this file to somewhere (e.g. ~/.git-prompt.sh).
-#    2) Add the following line to your .bashrc/.zshrc:
-#        source ~/.git-prompt.sh
-#    3a) Change your PS1 to call __git_ps1 as
-#        command-substitution:
-#        Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
-#        ZSH:  setopt PROMPT_SUBST ; PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
-#        the optional argument will be used as format string.
-#    3b) Alternatively, for a slightly faster prompt, __git_ps1 can
-#        be used for PROMPT_COMMAND in Bash or for precmd() in Zsh
-#        with two parameters, <pre> and <post>, which are strings
-#        you would put in $PS1 before and after the status string
-#        generated by the git-prompt machinery.  e.g.
-#        Bash: PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'
-#          will show username, at-sign, host, colon, cwd, then
-#          various status string, followed by dollar and SP, as
-#          your prompt.
-#        ZSH:  precmd () { __git_ps1 "%n" ":%~$ " "|%s" }
-#          will show username, pipe, then various status string,
-#          followed by colon, cwd, dollar and SP, as your prompt.
-#        Optionally, you can supply a third argument with a printf
-#        format string to finetune the output of the branch status
-#
-# The repository status will be displayed only if you are currently in a
-# git repository. The %s token is the placeholder for the shown status.
-#
-# The prompt status always includes the current branch name.
-#
-# In addition, if you set GIT_PS1_SHOWDIRTYSTATE to a nonempty value,
-# unstaged (*) and staged (+) changes will be shown next to the branch
-# name.  You can configure this per-repository with the
-# bash.showDirtyState variable, which defaults to true once
-# GIT_PS1_SHOWDIRTYSTATE is enabled.
-#
-# You can also see if currently something is stashed, by setting
-# GIT_PS1_SHOWSTASHSTATE to a nonempty value. If something is stashed,
-# then a '$' will be shown next to the branch name.
-#
-# If you would like to see if there're untracked files, then you can set
-# GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're untracked
-# files, then a '%' will be shown next to the branch name.  You can
-# configure this per-repository with the bash.showUntrackedFiles
-# variable, which defaults to true once GIT_PS1_SHOWUNTRACKEDFILES is
-# enabled.
-#
-# If you would like to see the difference between HEAD and its upstream,
-# set GIT_PS1_SHOWUPSTREAM="auto".  A "<" indicates you are behind, ">"
-# indicates you are ahead, "<>" indicates you have diverged and "="
-# indicates that there is no difference. You can further control
-# behaviour by setting GIT_PS1_SHOWUPSTREAM to a space-separated list
-# of values:
-#
-#     verbose       show number of commits ahead/behind (+/-) upstream
-#     name          if verbose, then also show the upstream abbrev name
-#     legacy        don't use the '--count' option available in recent
-#                   versions of git-rev-list
-#     git           always compare HEAD to @{upstream}
-#     svn           always compare HEAD to your SVN upstream
-#
-# By default, __git_ps1 will compare HEAD to your SVN upstream if it can
-# find one, or @{upstream} otherwise.  Once you have set
-# GIT_PS1_SHOWUPSTREAM, you can override it on a per-repository basis by
-# setting the bash.showUpstream config variable.
-#
-# You can change the separator between the branch name and the above
-# state symbols by setting GIT_PS1_STATESEPARATOR. The default separator
-# is SP.
-#
-# When there is an in-progress operation such as a merge, rebase,
-# revert, cherry-pick, or bisect, the prompt will include information
-# related to the operation, often in the form "|<OPERATION-NAME>".
-#
-# When the repository has a sparse-checkout, a notification of the form
-# "|SPARSE" will be included in the prompt.  This can be shortened to a
-# single '?' character by setting GIT_PS1_COMPRESSSPARSESTATE, or omitted
-# by setting GIT_PS1_OMITSPARSESTATE.
-#
-# If you would like to see more information about the identity of
-# commits checked out as a detached HEAD, set GIT_PS1_DESCRIBE_STYLE
-# to one of these values:
-#
-#     contains      relative to newer annotated tag (v1.6.3.2~35)
-#     branch        relative to newer tag or branch (master~4)
-#     describe      relative to older annotated tag (v1.6.3.1-13-gdd42c2f)
-#     tag           relative to any older tag (v1.6.3.1-13-gdd42c2f)
-#     default       exactly matching tag
-#
-# If you would like a colored hint about the current dirty state, set
-# GIT_PS1_SHOWCOLORHINTS to a nonempty value. The colors are based on
-# the colored output of "git status -sb" and are available only when
-# using __git_ps1 for PROMPT_COMMAND or precmd in Bash,
-# but always available in Zsh.
-#
-# If you would like __git_ps1 to do nothing in the case when the current
-# directory is set up to be ignored by git, then set
-# GIT_PS1_HIDE_IF_PWD_IGNORED to a nonempty value. Override this on the
-# repository level by setting bash.hideIfPwdIgnored to "false".
-
-# check whether printf supports -v
-__git_printf_supports_v=
-printf -v __git_printf_supports_v -- '%s' yes >/dev/null 2>&1
-
-# stores the divergence from upstream in $p
-# used by GIT_PS1_SHOWUPSTREAM
-__git_ps1_show_upstream ()
-{
-	local key value
-	local svn_remote svn_url_pattern count n
-	local upstream_type=git legacy="" verbose="" name=""
-
-	svn_remote=()
-	# get some config options from git-config
-	local output="$(git config -z --get-regexp '^(svn-remote\..*\.url|bash\.showupstream)$' 2>/dev/null | tr '\0\n' '\n ')"
-	while read -r key value; do
-		case "$key" in
-		bash.showupstream)
-			GIT_PS1_SHOWUPSTREAM="$value"
-			if [[ -z "${GIT_PS1_SHOWUPSTREAM}" ]]; then
-				p=""
-				return
-			fi
-			;;
-		svn-remote.*.url)
-			svn_remote[$((${#svn_remote[@]} + 1))]="$value"
-			svn_url_pattern="$svn_url_pattern\\|$value"
-			upstream_type=svn+git # default upstream type is SVN if available, else git
-			;;
-		esac
-	done <<< "$output"
-
-	# parse configuration values
-	local option
-	for option in ${GIT_PS1_SHOWUPSTREAM}; do
-		case "$option" in
-		git|svn) upstream_type="$option" ;;
-		verbose) verbose=1 ;;
-		legacy)  legacy=1  ;;
-		name)    name=1 ;;
-		esac
-	done
-
-	# Find our upstream type
-	case "$upstream_type" in
-	git)    upstream_type="@{upstream}" ;;
-	svn*)
-		# get the upstream from the "git-svn-id: ..." in a commit message
-		# (git-svn uses essentially the same procedure internally)
-		local -a svn_upstream
-		svn_upstream=($(git log --first-parent -1 \
-					--grep="^git-svn-id: \(${svn_url_pattern#??}\)" 2>/dev/null))
-		if [[ 0 -ne ${#svn_upstream[@]} ]]; then
-			svn_upstream=${svn_upstream[${#svn_upstream[@]} - 2]}
-			svn_upstream=${svn_upstream%@*}
-			local n_stop="${#svn_remote[@]}"
-			for ((n=1; n <= n_stop; n++)); do
-				svn_upstream=${svn_upstream#${svn_remote[$n]}}
-			done
-
-			if [[ -z "$svn_upstream" ]]; then
-				# default branch name for checkouts with no layout:
-				upstream_type=${GIT_SVN_ID:-git-svn}
-			else
-				upstream_type=${svn_upstream#/}
-			fi
-		elif [[ "svn+git" = "$upstream_type" ]]; then
-			upstream_type="@{upstream}"
-		fi
-		;;
-	esac
-
-	# Find how many commits we are ahead/behind our upstream
-	if [[ -z "$legacy" ]]; then
-		count="$(git rev-list --count --left-right \
-				"$upstream_type"...HEAD 2>/dev/null)"
-	else
-		# produce equivalent output to --count for older versions of git
-		local commits
-		if commits="$(git rev-list --left-right "$upstream_type"...HEAD 2>/dev/null)"
-		then
-			local commit behind=0 ahead=0
-			for commit in $commits
-			do
-				case "$commit" in
-				"<"*) ((behind++)) ;;
-				*)    ((ahead++))  ;;
-				esac
-			done
-			count="$behind	$ahead"
-		else
-			count=""
-		fi
-	fi
-
-	# calculate the result
-	if [[ -z "$verbose" ]]; then
-		case "$count" in
-		"") # no upstream
-			p="" ;;
-		"0	0") # equal to upstream
-			p="=" ;;
-		"0	"*) # ahead of upstream
-			p=">" ;;
-		*"	0") # behind upstream
-			p="<" ;;
-		*)	    # diverged from upstream
-			p="<>" ;;
-		esac
-	else # verbose, set upstream instead of p
-		case "$count" in
-		"") # no upstream
-			upstream="" ;;
-		"0	0") # equal to upstream
-			upstream="|u=" ;;
-		"0	"*) # ahead of upstream
-			upstream="|u+${count#0	}" ;;
-		*"	0") # behind upstream
-			upstream="|u-${count%	0}" ;;
-		*)	    # diverged from upstream
-			upstream="|u+${count#*	}-${count%	*}" ;;
-		esac
-		if [[ -n "$count" && -n "$name" ]]; then
-			__git_ps1_upstream_name=$(git rev-parse \
-				--abbrev-ref "$upstream_type" 2>/dev/null)
-			if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
-				upstream="$upstream \${__git_ps1_upstream_name}"
-			else
-				upstream="$upstream ${__git_ps1_upstream_name}"
-				# not needed anymore; keep user's
-				# environment clean
-				unset __git_ps1_upstream_name
-			fi
-		fi
-	fi
-
-}
-
-# Helper function that is meant to be called from __git_ps1.  It
-# injects color codes into the appropriate gitstring variables used
-# to build a gitstring. Colored variables are responsible for clearing
-# their own color.
-__git_ps1_colorize_gitstring ()
-{
-	if [[ -n ${ZSH_VERSION-} ]]; then
-		local c_red='%F{red}'
-		local c_green='%F{green}'
-		local c_lblue='%F{blue}'
-		local c_clear='%f'
-	else
-		# Using \[ and \] around colors is necessary to prevent
-		# issues with command line editing/browsing/completion!
-		local c_red='\[\e[31m\]'
-		local c_green='\[\e[32m\]'
-		local c_lblue='\[\e[1;34m\]'
-		local c_clear='\[\e[0m\]'
-	fi
-	local bad_color=$c_red
-	local ok_color=$c_green
-	local flags_color="$c_lblue"
-
-	local branch_color=""
-	if [ $detached = no ]; then
-		branch_color="$ok_color"
-	else
-		branch_color="$bad_color"
-	fi
-	if [ -n "$c" ]; then
-		c="$branch_color$c$c_clear"
-	fi
-	b="$branch_color$b$c_clear"
-
-	if [ -n "$w" ]; then
-		w="$bad_color$w$c_clear"
-	fi
-	if [ -n "$i" ]; then
-		i="$ok_color$i$c_clear"
-	fi
-	if [ -n "$s" ]; then
-		s="$flags_color$s$c_clear"
-	fi
-	if [ -n "$u" ]; then
-		u="$bad_color$u$c_clear"
-	fi
-}
-
-# Helper function to read the first line of a file into a variable.
-# __git_eread requires 2 arguments, the file path and the name of the
-# variable, in that order.
-__git_eread ()
-{
-	test -r "$1" && IFS=$'\r\n' read "$2" <"$1"
-}
-
-# see if a cherry-pick or revert is in progress, if the user has committed a
-# conflict resolution with 'git commit' in the middle of a sequence of picks or
-# reverts then CHERRY_PICK_HEAD/REVERT_HEAD will not exist so we have to read
-# the todo file.
-__git_sequencer_status ()
-{
-	local todo
-	if test -f "$g/CHERRY_PICK_HEAD"
-	then
-		r="|CHERRY-PICKING"
-		return 0;
-	elif test -f "$g/REVERT_HEAD"
-	then
-		r="|REVERTING"
-		return 0;
-	elif __git_eread "$g/sequencer/todo" todo
-	then
-		case "$todo" in
-		p[\ \	]|pick[\ \	]*)
-			r="|CHERRY-PICKING"
-			return 0
-		;;
-		revert[\ \	]*)
-			r="|REVERTING"
-			return 0
-		;;
-		esac
-	fi
-	return 1
-}
-
-# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
-# when called from PS1 using command substitution
-# in this mode it prints text to add to bash PS1 prompt (includes branch name)
-#
-# __git_ps1 requires 2 or 3 arguments when called from PROMPT_COMMAND (pc)
-# in that case it _sets_ PS1. The arguments are parts of a PS1 string.
-# when two arguments are given, the first is prepended and the second appended
-# to the state string when assigned to PS1.
-# The optional third parameter will be used as printf format string to further
-# customize the output of the git-status string.
-# In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
-__git_ps1 ()
-{
-	# preserve exit status
-	local exit=$?
-	local pcmode=no
-	local detached=no
-	local ps1pc_start='\u@\h:\w '
-	local ps1pc_end='\$ '
-	local printf_format=' (%s)'
-
-	case "$#" in
-		2|3)	pcmode=yes
-			ps1pc_start="$1"
-			ps1pc_end="$2"
-			printf_format="${3:-$printf_format}"
-			# set PS1 to a plain prompt so that we can
-			# simply return early if the prompt should not
-			# be decorated
-			PS1="$ps1pc_start$ps1pc_end"
-		;;
-		0|1)	printf_format="${1:-$printf_format}"
-		;;
-		*)	return $exit
-		;;
-	esac
-
-	# ps1_expanded:  This variable is set to 'yes' if the shell
-	# subjects the value of PS1 to parameter expansion:
-	#
-	#   * bash does unless the promptvars option is disabled
-	#   * zsh does not unless the PROMPT_SUBST option is set
-	#   * POSIX shells always do
-	#
-	# If the shell would expand the contents of PS1 when drawing
-	# the prompt, a raw ref name must not be included in PS1.
-	# This protects the user from arbitrary code execution via
-	# specially crafted ref names.  For example, a ref named
-	# 'refs/heads/$(IFS=_;cmd=sudo_rm_-rf_/;$cmd)' might cause the
-	# shell to execute 'sudo rm -rf /' when the prompt is drawn.
-	#
-	# Instead, the ref name should be placed in a separate global
-	# variable (in the __git_ps1_* namespace to avoid colliding
-	# with the user's environment) and that variable should be
-	# referenced from PS1.  For example:
-	#
-	#     __git_ps1_foo=$(do_something_to_get_ref_name)
-	#     PS1="...stuff...\${__git_ps1_foo}...stuff..."
-	#
-	# If the shell does not expand the contents of PS1, the raw
-	# ref name must be included in PS1.
-	#
-	# The value of this variable is only relevant when in pcmode.
-	#
-	# Assume that the shell follows the POSIX specification and
-	# expands PS1 unless determined otherwise.  (This is more
-	# likely to be correct if the user has a non-bash, non-zsh
-	# shell and safer than the alternative if the assumption is
-	# incorrect.)
-	#
-	local ps1_expanded=yes
-	[ -z "${ZSH_VERSION-}" ] || [[ -o PROMPT_SUBST ]] || ps1_expanded=no
-	[ -z "${BASH_VERSION-}" ] || shopt -q promptvars || ps1_expanded=no
-
-	local repo_info rev_parse_exit_code
-	repo_info="$(git rev-parse --git-dir --is-inside-git-dir \
-		--is-bare-repository --is-inside-work-tree \
-		--short HEAD 2>/dev/null)"
-	rev_parse_exit_code="$?"
-
-	if [ -z "$repo_info" ]; then
-		return $exit
-	fi
-
-	local short_sha=""
-	if [ "$rev_parse_exit_code" = "0" ]; then
-		short_sha="${repo_info##*$'\n'}"
-		repo_info="${repo_info%$'\n'*}"
-	fi
-	local inside_worktree="${repo_info##*$'\n'}"
-	repo_info="${repo_info%$'\n'*}"
-	local bare_repo="${repo_info##*$'\n'}"
-	repo_info="${repo_info%$'\n'*}"
-	local inside_gitdir="${repo_info##*$'\n'}"
-	local g="${repo_info%$'\n'*}"
-
-	if [ "true" = "$inside_worktree" ] &&
-	   [ -n "${GIT_PS1_HIDE_IF_PWD_IGNORED-}" ] &&
-	   [ "$(git config --bool bash.hideIfPwdIgnored)" != "false" ] &&
-	   git check-ignore -q .
-	then
-		return $exit
-	fi
-
-	local sparse=""
-	if [ -z "${GIT_PS1_COMPRESSSPARSESTATE-}" ] &&
-	   [ -z "${GIT_PS1_OMITSPARSESTATE-}" ] &&
-	   [ "$(git config --bool core.sparseCheckout)" = "true" ]; then
-		sparse="|SPARSE"
-	fi
-
-	local r=""
-	local b=""
-	local step=""
-	local total=""
-	if [ -d "$g/rebase-merge" ]; then
-		__git_eread "$g/rebase-merge/head-name" b
-		__git_eread "$g/rebase-merge/msgnum" step
-		__git_eread "$g/rebase-merge/end" total
-		r="|REBASE"
-	else
-		if [ -d "$g/rebase-apply" ]; then
-			__git_eread "$g/rebase-apply/next" step
-			__git_eread "$g/rebase-apply/last" total
-			if [ -f "$g/rebase-apply/rebasing" ]; then
-				__git_eread "$g/rebase-apply/head-name" b
-				r="|REBASE"
-			elif [ -f "$g/rebase-apply/applying" ]; then
-				r="|AM"
-			else
-				r="|AM/REBASE"
-			fi
-		elif [ -f "$g/MERGE_HEAD" ]; then
-			r="|MERGING"
-		elif __git_sequencer_status; then
-			:
-		elif [ -f "$g/BISECT_LOG" ]; then
-			r="|BISECTING"
-		fi
-
-		if [ -n "$b" ]; then
-			:
-		elif [ -h "$g/HEAD" ]; then
-			# symlink symbolic ref
-			b="$(git symbolic-ref HEAD 2>/dev/null)"
-		else
-			local head=""
-			if ! __git_eread "$g/HEAD" head; then
-				return $exit
-			fi
-			# is it a symbolic ref?
-			b="${head#ref: }"
-			if [ "$head" = "$b" ]; then
-				detached=yes
-				b="$(
-				case "${GIT_PS1_DESCRIBE_STYLE-}" in
-				(contains)
-					git describe --contains HEAD ;;
-				(branch)
-					git describe --contains --all HEAD ;;
-				(tag)
-					git describe --tags HEAD ;;
-				(describe)
-					git describe HEAD ;;
-				(* | default)
-					git describe --tags --exact-match HEAD ;;
-				esac 2>/dev/null)" ||
-
-				b="$short_sha..."
-				b="($b)"
-			fi
-		fi
-	fi
-
-	if [ -n "$step" ] && [ -n "$total" ]; then
-		r="$r $step/$total"
-	fi
-
-	local w=""
-	local i=""
-	local s=""
-	local u=""
-	local h=""
-	local c=""
-	local p="" # short version of upstream state indicator
-	local upstream="" # verbose version of upstream state indicator
-
-	if [ "true" = "$inside_gitdir" ]; then
-		if [ "true" = "$bare_repo" ]; then
-			c="BARE:"
-		else
-			b="GIT_DIR!"
-		fi
-	elif [ "true" = "$inside_worktree" ]; then
-		if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ] &&
-		   [ "$(git config --bool bash.showDirtyState)" != "false" ]
-		then
-			git diff --no-ext-diff --quiet || w="*"
-			git diff --no-ext-diff --cached --quiet || i="+"
-			if [ -z "$short_sha" ] && [ -z "$i" ]; then
-				i="#"
-			fi
-		fi
-		if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ] &&
-		   git rev-parse --verify --quiet refs/stash >/dev/null
-		then
-			s="$"
-		fi
-
-		if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ] &&
-		   [ "$(git config --bool bash.showUntrackedFiles)" != "false" ] &&
-		   git ls-files --others --exclude-standard --directory --no-empty-directory --error-unmatch -- ':/*' >/dev/null 2>/dev/null
-		then
-			u="%${ZSH_VERSION+%}"
-		fi
-
-		if [ -n "${GIT_PS1_COMPRESSSPARSESTATE-}" ] &&
-		   [ "$(git config --bool core.sparseCheckout)" = "true" ]; then
-			h="?"
-		fi
-
-		if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
-			__git_ps1_show_upstream
-		fi
-	fi
-
-	local z="${GIT_PS1_STATESEPARATOR-" "}"
-
-	b=${b##refs/heads/}
-	if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
-		__git_ps1_branch_name=$b
-		b="\${__git_ps1_branch_name}"
-	fi
-
-	# NO color option unless in PROMPT_COMMAND mode or it's Zsh
-	if [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then
-		if [ $pcmode = yes ] || [ -n "${ZSH_VERSION-}" ]; then
-			__git_ps1_colorize_gitstring
-		fi
-	fi
-
-	local f="$h$w$i$s$u$p"
-	local gitstring="$c$b${f:+$z$f}${sparse}$r${upstream}"
-
-	if [ $pcmode = yes ]; then
-		if [ "${__git_printf_supports_v-}" != yes ]; then
-			gitstring=$(printf -- "$printf_format" "$gitstring")
-		else
-			printf -v gitstring -- "$printf_format" "$gitstring"
-		fi
-		PS1="$ps1pc_start$gitstring$ps1pc_end"
-	else
-		printf -- "$printf_format" "$gitstring"
-	fi
-
-	return $exit
-}
diff --git a/public/.git-prompt.sh b/public/.git-prompt.sh
new file mode 120000
index 0000000..2714012
--- /dev/null
+++ b/public/.git-prompt.sh
@@ -0,0 +1 @@
+../extra/.git-prompt.sh
\ No newline at end of file
-- 
cgit v1.2.3