Automatic @vjt style Git commit messages

prepare-commit-msg.sh

#!/bin/sh

# Install this in your Git repo in .git/hooks/prepare-commit-msg. Git doesn't
# support global hooks, but you can work around it using templates, see:
#
# https://github.com/mroth/lolcommits/wiki/Enabling-Lolcommits-for-all-your-Git-Repositories.

ORIGINAL_COMMIT_MSG=$(cat "$1")

# from http://www.emoji-cheat-sheet.com/
EMOJIS=(
bowtie smile laughing blush smiley relaxed smirk heart_eyes kissing_heart
kissing_closed_eyes flushed relieved satisfied grin wink
stuck_out_tongue_winking_eye stuck_out_tongue_closed_eyes grinning kissing
kissing_smiling_eyes stuck_out_tongue sleeping worried frowning anguished
open_mouth grimacing confused hushed expressionless unamused sweat_smile sweat
disappointed_relieved weary pensive disappointed confounded fearful cold_sweat
persevere cry sob joy astonished scream neckbeard tired_face angry rage triumph
sleepy yum mask sunglasses dizzy_face imp smiling_imp neutral_face no_mouth
innocent alien yellow_heart blue_heart purple_heart heart green_heart
broken_heart heartbeat heartpulse two_hearts revolving_hearts cupid
sparkling_heart sparkles star star2 dizzy boom collision anger exclamation
question grey_exclamation grey_question zzz dash sweat_drops notes musical_note
fire hankey poop shit +1 thumbsup -1 thumbsdown ok_hand punch facepunch fist v
wave hand raised_hand open_hands point_up point_down point_left point_right
raised_hands pray point_up_2 clap muscle metal fu runner running couple family
two_men_holding_hands two_women_holding_hands dancer dancers ok_woman no_good
information_desk_person raising_hand bride_with_veil person_with_pouting_face
person_frowning bow couplekiss couple_with_heart massage haircut nail_care boy
girl woman man baby older_woman older_man person_with_blond_hair
man_with_gua_pi_mao man_with_turban construction_worker cop angel princess
smiley_cat smile_cat heart_eyes_cat kissing_cat smirk_cat scream_cat
crying_cat_face joy_cat pouting_cat japanese_ogre japanese_goblin see_no_evil
hear_no_evil speak_no_evil guardsman skull feet lips kiss droplet ear eyes nose
tongue love_letter bust_in_silhouette busts_in_silhouette speech_balloon
thought_balloon feelsgood finnadie goberserk godmode hurtrealbad rage1 rage2
rage3 rage4 suspect trollface sunny umbrella cloud snowflake snowman zap
cyclone foggy ocean cat dog mouse hamster rabbit wolf frog tiger koala bear pig
pig_nose cow boar monkey_face monkey horse racehorse camel sheep elephant
panda_face snake bird baby_chick hatched_chick hatching_chick chicken penguin
turtle bug honeybee ant beetle snail octopus tropical_fish fish whale whale2
dolphin cow2 ram rat water_buffalo tiger2 rabbit2 dragon goat rooster dog2 pig2
mouse2 ox dragon_face blowfish crocodile dromedary_camel leopard cat2 poodle
paw_prints bouquet cherry_blossom tulip four_leaf_clover rose sunflower
hibiscus maple_leaf leaves fallen_leaf herb mushroom cactus palm_tree
evergreen_tree deciduous_tree chestnut seedling blossom ear_of_rice shell
globe_with_meridians sun_with_face full_moon_with_face new_moon_with_face
new_moon waxing_crescent_moon first_quarter_moon waxing_gibbous_moon full_moon
waning_gibbous_moon last_quarter_moon waning_crescent_moon
last_quarter_moon_with_face first_quarter_moon_with_face crescent_moon
earth_africa earth_americas earth_asia volcano milky_way partly_sunny octocat
squirrel bamboo gift_heart dolls school_satchel mortar_board flags fireworks
sparkler wind_chime rice_scene jack_o_lantern ghost santa christmas_tree gift
bell no_bell tanabata_tree tada confetti_ball balloon crystal_ball cd dvd
floppy_disk camera video_camera movie_camera computer tv iphone phone telephone
telephone_receiver pager fax minidisc vhs sound speaker mute loudspeaker mega
hourglass hourglass_flowing_sand alarm_clock watch radio satellite loop mag
mag_right unlock lock lock_with_ink_pen closed_lock_with_key key bulb
flashlight high_brightness low_brightness electric_plug battery calling email
mailbox postbox bath bathtub shower toilet wrench nut_and_bolt hammer seat
moneybag yen dollar pound euro credit_card money_with_wings e-mail inbox_tray
outbox_tray envelope incoming_envelope postal_horn mailbox_closed
mailbox_with_mail mailbox_with_no_mail package door smoking bomb gun hocho pill
syringe page_facing_up page_with_curl bookmark_tabs bar_chart
chart_with_upwards_trend chart_with_downwards_trend scroll clipboard calendar
date card_index file_folder open_file_folder scissors pushpin paperclip
black_nib pencil2 straight_ruler triangular_ruler closed_book green_book
blue_book orange_book notebook notebook_with_decorative_cover ledger books
bookmark name_badge microscope telescope newspaper football basketball soccer
baseball tennis 8ball rugby_football bowling golf mountain_bicyclist bicyclist
horse_racing snowboarder swimmer surfer ski spades hearts clubs diamonds gem
ring trophy musical_score musical_keyboard violin space_invader video_game
black_joker flower_playing_cards game_die dart mahjong clapper memo pencil book
art microphone headphones trumpet saxophone guitar shoe sandal high_heel
lipstick boot shirt tshirt necktie womans_clothes dress running_shirt_with_sash
jeans kimono bikini ribbon tophat crown womans_hat mans_shoe closed_umbrella
briefcase handbag pouch purse eyeglasses fishing_pole_and_fish coffee tea sake
baby_bottle beer beers cocktail tropical_drink wine_glass fork_and_knife pizza
hamburger fries poultry_leg meat_on_bone spaghetti curry fried_shrimp bento
sushi fish_cake rice_ball rice_cracker rice ramen stew oden dango egg bread
doughnut custard icecream ice_cream shaved_ice birthday cake cookie
chocolate_bar candy lollipop honey_pot apple green_apple tangerine lemon
cherries grapes watermelon strawberry peach melon banana pear pineapple
sweet_potato eggplant tomato corn house house_with_garden school office
post_office hospital bank convenience_store love_hotel hotel wedding church
department_store european_post_office city_sunrise city_sunset japanese_castle
european_castle tent factory tokyo_tower japan mount_fuji
sunrise_over_mountains sunrise stars statue_of_liberty bridge_at_night
carousel_horse rainbow ferris_wheel fountain roller_coaster ship speedboat boat
sailboat rowboat anchor rocket airplane helicopter steam_locomotive tram
mountain_railway bike aerial_tramway suspension_railway mountain_cableway
tractor blue_car oncoming_automobile car red_car taxi oncoming_taxi
articulated_lorry bus oncoming_bus rotating_light police_car
oncoming_police_car fire_engine ambulance minibus truck train station train2
bullettrain_front bullettrain_side light_rail monorail railway_car trolleybus
ticket fuelpump vertical_traffic_light traffic_light warning construction
beginner atm slot_machine busstop barber hotsprings checkered_flag
crossed_flags izakaya_lantern moyai circus_tent performing_arts round_pushpin
triangular_flag_on_post jp kr cn us fr es it ru gb uk de one two three four
five six seven eight nine keycap_ten 1234 zero hash symbols arrow_backward
arrow_down arrow_forward arrow_left capital_abcd abcd abc arrow_lower_left
arrow_lower_right arrow_right arrow_up arrow_upper_left arrow_upper_right
arrow_double_down arrow_double_up arrow_down_small arrow_heading_down
arrow_heading_up leftwards_arrow_with_hook arrow_right_hook left_right_arrow
arrow_up_down arrow_up_small arrows_clockwise arrows_counterclockwise rewind
fast_forward information_source ok twisted_rightwards_arrows repeat repeat_one
new top up cool free ng cinema koko signal_strength u5272 u5408 u55b6 u6307
u6708 u6709 u6e80 u7121 u7533 u7a7a u7981 sa restroom mens womens baby_symbol
no_smoking parking wheelchair metro baggage_claim accept wc potable_water
put_litter_in_its_place secret congratulations m passport_control left_luggage
customs ideograph_advantage cl sos id no_entry_sign underage no_mobile_phones
do_not_litter non-potable_water no_bicycles no_pedestrians children_crossing
no_entry eight_spoked_asterisk sparkle eight_pointed_black_star
heart_decoration vs vibration_mode mobile_phone_off chart currency_exchange
aries taurus gemini cancer leo virgo libra scorpius sagittarius capricorn
aquarius pisces ophiuchus six_pointed_star negative_squared_cross_mark a b ab
o2 diamond_shape_with_a_dot_inside recycle end back on soon clock1 clock130
clock10 clock1030 clock11 clock1130 clock12 clock1230 clock2 clock230 clock3
clock330 clock4 clock430 clock5 clock530 clock6 clock630 clock7 clock730 clock8
clock830 clock9 clock930 heavy_dollar_sign copyright registered tm x
heavy_exclamation_mark bangbang interrobang o heavy_multiplication_x
heavy_plus_sign heavy_minus_sign heavy_division_sign white_flower 100
heavy_check_mark ballot_box_with_check radio_button link curly_loop wavy_dash
part_alternation_mark trident black_small_square white_small_square
black_medium_small_square white_medium_small_square black_medium_square
white_medium_square black_large_square white_large_square white_check_mark
black_square_button white_square_button black_circle white_circle red_circle
large_blue_circle large_blue_diamond large_orange_diamond small_blue_diamond
small_orange_diamond small_red_triangle small_red_triangle_down shipit
)

select_emoji ()
{
  echo "${EMOJIS[$RANDOM % ${#EMOJIS[@]} ]}"
}

# truncate the file
:> "$1"

# Only add emoji to the first line of the commit message
FIRST_LINE=true
while read -r LINE; do
  if [ "$FIRST_LINE" = true ]; then
    echo ":$(select_emoji): $LINE :$(select_emoji):" >> "$1"
    FIRST_LINE=false
  else
    echo "$LINE" >> "$1"
  fi
done <<< "$ORIGINAL_COMMIT_MSG"