bashrc.txt

# ~/.bashrc: executed by bash(1) for non-login shells.

### Terminal tweaks

## If not running interactively, don't do anything
[ -z "$PS1" ] && return

## For debugging scripts, use bash -x, then for each line of a script show:
export PS4='# [\D{%Y-%m-%d_%H:%M:%S}] ${BASH_SOURCE} line ${LINENO} (in: ${FUNCNAME[0]})\n\r# '

## Protect against ^O exec attack on bracketed paste handling
bind 'set enable-bracketed-paste on'
bind -r "\C-o"

## After each command check window size to update LINES and COLUMNS if needed
shopt -s checkwinsize

## Treat the same way echo \n and \013 
shopt -s xpg_echo

## Complex completion
#shopt -s extglob progcomp
#complete -d pushd
#complete -d rmdir
#complete -d cd

## Remap ctrl-c to ctrl-x to copy/paste with ctrl-c and ctrl-v, and disable ctrl-s/ctrl-q
stty intr ^X stop undef start undef rprnt undef discard undef swtch undef -ixoff -ixon
# The above doesn't show ^S,^Q,^R and ^O anymore in stty -a
# rprnt is an old function to reprint line on ^R, swtch is another old function of ^Z
# sigquit ctrl-\ is partially supported by windows-terminal
# ^R is mapped to reverse search, ^S to forward-kill-word
# the following are free for bash/inputrc: ^Q ^O ; keep for GUIs: ^space ^enter

## Speed up dircolors processing by avoiding stat
#eval $(cat $HOME/.dircolors.solarized_256 | perl -pe 's/^((CAP|S[ET]|O[TR]|M|E)\w+).*/$1 00/' | SHELL=/usr/bin/bash dircolors -)

### Functions

## Function to protect sixels sequence if not using a proper sixel-aware multiplexer
# Like old versions of tmux which requires unrecognized OSC sequences to be wrapped
# with:
# DCS tmux; <sequence> ST
#  also all ESCs in <sequence> to be replaced with ESC ESC.
#  also tmux only accepts ESC backslash for ST.
# Better use a sixel-tmux than having to do:
#       cat image.six | __tmux_guard()
# This is because even with __tmux_guard, regular a tmux sometimes eats text
# when data outstanding gets too large (width * height * 8 bytes)
__tmux_guard() { printf "\u1bPtmux;" ; sed 's:\x1b:\x1b\x1b:g' ; printf "\u1b\\"; }

## Function to detect the bottom of the screen without stty
function __notbottom() {
  local pos
  # Detect the cursor position
  IFS='[;' read -p $'\e[6n' -d R -a pos -rs || echo "failed with error: $? ; ${pos[*]}"
  if [ -z $1 ] ; then
  ## add one to the 0-initiated x-pos (+ no offset), to give an error code at the bottom
    CURLN=$((${pos[1]} +1 ))
  else
  ## same but add the parameter as well, for the comparison that follows
    CURLN=$((${pos[1]} +1 +$1 ))
  fi
  if [ "$CURLN" -ge "$LINES" ] ; then return -1 ; fi
}

## Function for SQLite logging by DEBUG trap
function sqliteaddstart {
  [[ $BASH_COMMAND =~ "^logout$" ]] && return

  # get the command from history then strip the command number
  local numandwhat="$(history 1)"
  # remove leading spaces
  numandwhat="${numandwhat#"${numandwhat%%[![:space:]]*}"}"
  # read the sequence number
  local num="${numandwhat%%' '*}"
  # to avoid having to unset the trap in PROMPT_COMMAND and to deal with pipes
  [[ $SEEN -eq $num ]] && return
  # remove the number and the leading spaces
  numandwhat="${numandwhat#*' '}"
  what="${numandwhat#"${numandwhat%%[![:space:]]*}"}"

  # avoid adding empty commands
  [[ -z $what ]] && return
  # IGNORE to avoid failing the UNIQUE constaint on pipes
  sqlite3 "$SQLITEFILE" "
   INSERT OR IGNORE INTO commands (ssid, seq, what, path) VALUES (
    '${SID//\'/''}', '${num//\'/''}', '${what//\'/''}', '${PWD//\'/''}'
    );"

# PROMPT_COMMAND contains several commands, only run once to optimize
  export SEEN=$num
}

# SQLite logging:

# upon starting a command, log it
trap sqliteaddstart DEBUG

# once done, complete with the error code and stop timestamp through PROMPT_COMMAND
function sqliteaddstop {
 local ERR=$1
 [[ -z $ERR ]] && ERR=0
 # get the command from history then strip the command number
 local numandwhat="$(history 1)"
 # remove leading spaces
 numandwhat="${numandwhat#"${numandwhat%%[![:space:]]*}"}"
 # read the sequence number
 local num="${numandwhat%%' '*}"
 # don't do anything right after login
 [[ $num <1 ]] && return
 sqlite3 "$SQLITEFILE" "
   UPDATE commands 
    SET err='${ERR//\'/''}', stop=current_timestamp
    WHERE seq =${num//\'/''} AND ssid =${SID//\'/''}
   ;"
 }


## SQLite search
# map ^R to the custom search using sqlite and fzy on current path
bind -x '"\C-r": sqlitehistorysearchpath'
# map ^T to the custom search using sqlite and fzy on everything
bind -x '"\C-t": sqlitehistorysearch'

# SQLite searching and logging
function sqlitehistorysearch { # Ctrl-T
  # First, check if we are within 20 lines off the bottom that will be used by
  # fzy to display completion entries, and cause it to scroll the display
  __notbottom 20 || export overwritecursorposition=y
  # With no argument, blind search, just based on date
  [[ -z $READLINE_LINE ]] && INITSEARCH="" || INITSEARCH="--query=$READLINE_LINE"
  selected=`sqlite3 ~/.bash_history-$HOST.db "select distinct what from commands where err=0 order by stop desc limit 10000;" | fzy -l 20 $INITSEARCH`
  # With argument, change bash prompt and jump to the entry end
  [[ -n "$selected" ]] && export READLINE_LINE="$selected" && READLINE_POINT=${#READLINE_LINE}
  # And if fzy caused a scroll, do a SCP up there to overwrite the RCP at the bottom
  [[ -n "$overwritecursorposition" ]] && echo "\e[1A\e7" && unset overwritecursorposition     }

function sqlitehistorysearchpath { # Ctrl-R
  # First, check if we are within 20 lines off the bottom that will be used by
  # fzy to display completion entries, and cause it to scroll the display
  __notbottom 20 || export overwritecursorposition=y
  # With no argument, blind search, just based on path and date
  [[ -z $READLINE_LINE ]] && INITSEARCH="" || INITSEARCH="--query=$READLINE_LINE"
  selected=`sqlite3 ~/.bash_history-$HOST.db "select distinct what from commands where err=0 and path is \"$PWD\" order by stop desc limit 10000;" | fzy -l 20 $INITSEARCH`
  # With argument, change bash prompt and jump to the entry end
  [[ -n "$selected" ]] && export READLINE_LINE="$selected" && READLINE_POINT=${#READLINE_LINE}
  # And if fzy caused a scroll, do a SCP up there to overwrite the RCP at the bottom
  [[ -n "$overwritecursorposition" ]] && echo "\e[1A\e7" && unset overwritecursorposition     
}

## Color manpages
man() {
 LESS_TERMCAP_md=$'\e[01;31m' \
 LESS_TERMCAP_me=$'\e[0m' \
 LESS_TERMCAP_se=$'\e[0m' \
 LESS_TERMCAP_so=$'\e[01;44;33m' \
 LESS_TERMCAP_ue=$'\e[0m' \
 LESS_TERMCAP_us=$'\e[01;32m' \
 command man "$@"
}

#### Environment exports

## With the prompt after the timestamp
#PS1='`RETURN=$?; if [ $RETURN != 0 ]; then \
PS1='`RETURN=$?; sqliteaddstop "$RETURN" 2>/dev/null ; if [ $RETURN != 0 ]; then \
printf "\e[3m\e[2m\e[31m#!%03d\e[39m\e[49m" $RETURN ; else \
printf "\e[3m\e[2m\e[39m#    \e[49m" ; fi ; \
printf "\e[39m\e[12m[\D{%Y-%m-%d_%H:%M:%S}\e7\e[20C]\e[1m (\u@\h:\w)\e[22m\n\[\e[10m\e[3m\e[2m\]#\[\e[0m\] "`'

# WARNING: for multiline prompts, \n must be outside the \[ \] non-printable indicator

## PS0 is executed before the command
#  WONTFIX: \033[u (RCP) is not supported by mosh,
#  so instead use ESC 7 for RCP, ESC 8 for SCP

## PROMPT_COMMAND is eval() before printing PS1

## PS0 is executed right after the command, not before the display of the output
# so it is not possible to know if the command may reach the bottom of the screen.
# So instead of PS0, PROMPT_COMMAND check for the bottom and sets PS0 accordingly
# when the output reaches the bottom:

PROMPT_COMMAND='__notbottom && export PS0="\e8\r\e[0m\e[39m\e[2m\e[3m\e[5C\e[0m\e[20C\e[12m\e[2m\e[3m\D{,%Y-%m-%d_%H:%M:%S}\e[0m\e[2E" \
                       || export PS0="\e8\e[2A\r\e[0m\e[39m\e[2m\e[3m\e[5C\e[0m\e[20C\e[12m\e[2m\e[3m\D{,%Y-%m-%d_%H:%M:%S}\e[0m\e[2E" ; \
 printf "⏎%$((COLUMNS-1))s\\r\\033[K"'

## WONTFIX: for the old msys2 in windows-terminal, off by 1:
# [ TERM=="cygwin" ] && printf "⏎%$((COLUMNS-2))s\\r\\033[K" || printf "⏎%$((COLUMNS-1))s\\r\\033[K"'

## NB: in windows-terminal, you can enable 24bit color by turning ANSI VT processing by default:
# [HKEY_CURRENT_USER\Console]
#"VirtualTerminalLevel"=dword:00000001

CLICOLOR=yes
GNUTERM="sixelgd size  1280,720 truecolor font arial 16"
PAGER="less -iMSx4 -FX"
LESS=-RX
LS_OPTIONS='--color=auto'
LANG=C.UTF-8
LC_ALL=C.UTF-8
export PS1 CLICOLOR GNUTERM PAGER LESS LS_OPTIONS LANG LC_ALL

## Aliases
alias sixel-test="echo 'G1BxIjE7MTs5MzsxNCMwOzI7NjA7MDswIzE7MjswOzY2OzAjMjsyOzU2OzYwOzAjMzsyOzQ3OzM4\nOzk3IzQ7Mjs3MjswOzY5IzU7MjswOzY2OzcyIzY7Mjs3Mjs3Mjs3MiM3OzI7MDswOzAjMCExMX4j\nMSExMn4jMiExMn4jMyExMn4jNCExMn4jNSExMn4jNiExMn4jNyExMH4tIzAhMTF+IzEhMTJ+IzIh\nMTJ+IzMhMTJ+IzQhMTJ+IzUhMTJ+IzYhMTJ+IzchMTB+LSMwITExQiMxITEyQiMyITEyQiMzITEy\nQiM0ITEyQiM1ITEyQiM2ITEyQiM3ITEwQhtc' | base64 -d"
alias sixel-test-tmux="sixel-test | __tmux_guard"
alias n="nnn -JoUdeE"
alias ll="ls -lhaF --time-style=long-iso --show-control-chars"
alias l="ls -lhart --color --time-style=long-iso"
alias d="ls --color"

## msys2
#alias ifconfig="/c/Windows/System32/ipconfig.exe | grep [0-9][\.:]|grep '^ '"
#alias lsix="PATH=$PATH:/mingw64/bin ~/bin/lsix"
#alias adb=~/bin/adb.sh
#alias mlterm="~/bin/mlterm -u=true"
#alias dig="/usr/local/win64/dig"
#alias traceroute="/c/Windows/system32/TRACERT"
#alias ping="/c/Windows/System32/ping"
#alias gnuplot='/c/Program\ Files/gnuplot/bin/gnuplot'
#alias lf="winpty /usr/local/win64/lf.exe"

## Record all output to a file?
# if the parent process doesn't have script, start it not quietly (no -q)
# WONTFIX: for MacOSX, replace script -f by script -F
# cf https://unix.stackexchange.com/questions/25639/how-to-automatically-record-all-your-terminal-sessions-with-script-utility

#(ps -p $PPID | grep script) || (script -a -f $HOME/.bash_record_$(date +"%Y-%m-%d_%H-%M-%S")_$RANDOM.log)

## Source global definitions
#if [ -f /etc/bashrc ]; then
#        . /etc/bashrc
#fi