.vimrc

" This is Gary Bernhardt's .vimrc file
" vim:set ts=2 sts=2 sw=2 expandtab:

" remove all existing autocmds
autocmd!

" initialize plugins
call plug#begin('~/.vim/plugged')
Plug 'vim-ruby/vim-ruby'
Plug 'slim-template/vim-slim'
" Plug 'zivyangll/git-blame.vim'
Plug 'romainl/vim-cool'

" JavaScript
" Plug 'pangloss/vim-javascript'
Plug 'MaxMEllon/vim-jsx-pretty'

" TypeScript highlighting/indent
Plug 'leafgarland/typescript-vim'
" Plug 'HerringtonDarkholme/yats.vim'
" Plug 'peitalin/vim-jsx-typescript'
" Plug 'ianks/vim-tsx'

" TypeScript semantic support
Plug 'Quramy/tsuquyomi'
Plug 'w0rp/ale'

" Color schemes
Plug 'jonathanfilip/vim-lucius'

call plug#end()

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" BASIC EDITING CONFIGURATION
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
set nocompatible
" allow unsaved background buffers and remember marks/undo for them
set hidden
" remember more commands and search history
set history=10000
set expandtab
set tabstop=2
set shiftwidth=2
set softtabstop=2
set autoindent
set laststatus=2
set showmatch
set incsearch
set hlsearch
" make searches case-sensitive only if they contain upper-case characters
set ignorecase smartcase
" highlight current line
set cursorline
set cmdheight=1
set switchbuf=useopen
" Always show tab bar at the top
set showtabline=2
set winwidth=79
" This makes RVM work inside Vim. I have no idea why.
set shell=bash
" Prevent Vim from clobbering the scrollback buffer. See
" http://www.shallowsky.com/linux/noaltscreen.html
" set t_ti= t_te=
" keep more context when scrolling off the end of a buffer
set scrolloff=3
" Don't make backups at all
set nobackup
set nowritebackup
set backupdir=~/.vim-tmp,~/.tmp,~/tmp,/var/tmp,/tmp
set directory=~/.vim-tmp,~/.tmp,~/tmp,/var/tmp,/tmp
" allow backspacing over everything in insert mode
set backspace=indent,eol,start
" display incomplete commands
set showcmd
" Enable highlighting for syntax
syntax on
" Enable file type detection.
" Use the default filetype settings, so that mail gets 'tw' set to 72,
" 'cindent' is on in C files, etc.
" Also load indent files, to automatically do language-dependent indenting.
filetype plugin indent on
" use emacs-style tab completion when selecting files, etc
set wildmode=longest,list
" make tab completion for files/buffers act like bash
set wildmenu
let mapleader=","
" Fix slow O inserts
:set timeout timeoutlen=1000 ttimeoutlen=100
" Normally, Vim messes with iskeyword when you open a shell file. This can
" leak out, polluting other file types even after a 'set ft=' change. This
" variable prevents the iskeyword change so it can't hurt anyone.
let g:sh_noisk=1
" Modelines (comments that set vim options on a per-file basis)
set modeline
set modelines=3
" Turn folding off for real, hopefully
set foldmethod=manual
set nofoldenable
" Insert only one space when joining lines that contain sentence-terminating
" punctuation like `.`.
set nojoinspaces
" If a file is changed outside of vim, automatically reload it without asking
set autoread
" Use the old vim regex engine (version 1, as opposed to version 2, which was
" introduced in Vim 7.3.969). The Ruby syntax highlighting is significantly
" slower with the new regex engine.
set re=1
" Stop SQL language files from doing unholy things to the C-c key
let g:omni_sql_no_default_maps = 1
" Diffs are shown side-by-side not above/below
set diffopt=vertical
" Always show the sign column
set signcolumn=no
" True color mode! (Requires a fancy modern terminal, but iTerm works.)
:set termguicolors
" Write swap files to disk and trigger CursorHold event faster (default is
" after 4000 ms of inactivity)
:set updatetime=200
" Completion options.
"   menu: use a popup menu
"   preview: show more info in menu
:set completeopt=menu,preview
:set statusline=%<%f\ (%{&ft})\ %-4(%m%)%=%-19(%3l,%02c%03V%)

" Use persistent undo history.
if !isdirectory("/tmp/.vim-undo-dir")
    call mkdir("/tmp/.vim-undo-dir", "", 0700)
endif
set undodir=/tmp/.vim-undo-dir
set undofile

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" VIM-RUBY CONFIGURATION
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Do this:
"   first
"     .second do |x|
"       something
"     end
" Not this:
"   first
"     .second do |x|
"     something
"   end
:let g:ruby_indent_block_style = 'do'
" Do this:
"     x = if condition
"       something
"     end
" Not this:
"     x = if condition
"           something
"         end
:let g:ruby_indent_assignment_style = 'variable'

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" CUSTOM AUTOCMDS
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
augroup vimrcEx
  " Clear all autocmds in the group
  autocmd!
  autocmd FileType text setlocal textwidth=78
  " Jump to last cursor position unless it's invalid or in an event handler
  autocmd BufReadPost *
    \ if line("'\"") > 0 && line("'\"") <= line("$") |
    \   exe "normal g`\"" |
    \ endif

  "for ruby, autoindent with two spaces, always expand tabs
  autocmd FileType ruby,haml,eruby,yaml,html,sass,cucumber set ai sw=2 sts=2 et
  autocmd FileType python set sw=4 sts=4 et

  autocmd! BufRead,BufNewFile *.sass setfiletype sass 

  autocmd BufRead *.mkd  set ai formatoptions=tcroqn2 comments=n:&gt;
  autocmd BufRead *.markdown  set ai formatoptions=tcroqn2 comments=n:&gt;

  " Indent p tags
  " autocmd FileType html,eruby if g:html_indent_tags !~ '\\|p\>' | let g:html_indent_tags .= '\|p\|li\|dt\|dd' | endif

  " Don't syntax highlight markdown because it's often wrong
  autocmd! FileType mkd setlocal syn=off

  " Leave the return key alone when in command line windows, since it's used
  " to run commands there.
  autocmd! CmdwinEnter * :unmap <cr>
  autocmd! CmdwinLeave * :call MapCR()

  " *.md is markdown
  autocmd! BufNewFile,BufRead *.md setlocal ft=

  " indent slim two spaces, not four
  autocmd! FileType slim set sw=2 sts=2 et

  " javascript
  autocmd! FileType javascript set sw=2 sts=2 expandtab

  " Expand tabs in Go. Was gofmt raised in a barn?!
  autocmd! FileType go set sw=4 sts=4 expandtab | retab

  " Two-space indents in json
  autocmd! FileType json set sw=2 sts=2 expandtab

  " Hitting K in a Ruby file opens rdoc, which completely breaks the terminal
  " to the point of having to kill vim and do `reset`. Unmap it entirely.
  nnoremap K <Nop>

  " Compute syntax highlighting from beginning of file. (By default, vim only
  " looks 200 lines back, which can make it highlight code incorrectly in some
  " long files.)
  autocmd BufEnter * :syntax sync fromstart

  " Vim 8.2 adds built-in JSX support which seems broken. Setting these
  " filetypes lets the installed plugins deal with JSX/TSX instead.
  autocmd bufnewfile,bufread *.tsx set filetype=typescript.tsx
  autocmd bufnewfile,bufread *.jsx set filetype=javascript.jsx
augroup END

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" COLOR
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" :set t_Co=256 " 256 colors
:color grb-lucius
GrbLuciusDarkHighContrast

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" VIM-ALE CONFIG
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
let g:ale_linters = {'javascript': [], 'typescript': ['tsserver', 'eslint'], 'typescript.tsx': ['tsserver', 'eslint']}
let g:ale_fixers = {'javascript': [], 'typescript': ['prettier'], 'typescript.tsx': ['prettier']}
let g:ale_lint_on_text_changed = 'normal'
let g:ale_lint_on_insert_leave = 1
let g:ale_lint_delay = 0
let g:ale_set_quickfix = 0
let g:ale_set_loclist = 0
let g:ale_javascript_eslint_executable = 'eslint --cache'
nnoremap gj :ALENextWrap<cr>
nnoremap gk :ALEPreviousWrap<cr>
nnoremap g1 :ALEFirst<cr>
" This mapping will kill all ALE-related processes (including tsserver). It's
" necessary when those processes get confused. E.g., tsserver will sometimes
" show type errors that don't actually exist. I don't know exactly why that
" happens yet, but I think that it's related to renaming files.
nnoremap g0 :ALEStopAllLSPs<cr>

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Tsuquyomi
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Vim-ale handles TypeScript quickfix, so tell Tsuquyomi not to do it.
let g:tsuquyomi_disable_quickfix = 1

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" MISC KEY MAPS
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
map <leader>y "*y
" Move around splits with <c-hjkl>
nnoremap <c-j> <c-w>j
nnoremap <c-k> <c-w>k
nnoremap <c-h> <c-w>h
nnoremap <c-l> <c-w>l
" Insert a hash rocket with <c-l>
imap <c-l> <space>=><space>
" Can't be bothered to understand ESC vs <c-c> in insert mode
inoremap <c-c> <esc>
" <leader><leader> is more convenient than <c-^>
nnoremap <leader><leader> <c-^>
" Align selected lines
vnoremap <leader>ib :!align<cr>
" Close all other splits
nnoremap <leader>o :only<cr>

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" MULTIPURPOSE TAB KEY
" Indent if we're at the beginning of a line. Else, do completion.
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
function! InsertTabWrapper()
    let col = col('.') - 1
    if !col
        return "\<tab>"
    endif

    let char = getline('.')[col - 1]
    if char =~ '\k'
        " There's an identifier before the cursor, so complete the identifier.
        return "\<c-p>"
    else
        return "\<tab>"
    endif
endfunction
inoremap <expr> <tab> InsertTabWrapper()
inoremap <s-tab> <c-n>

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" SHORTCUT TO REFERENCE CURRENT FILE'S PATH IN COMMAND LINE MODE
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
cnoremap <expr> %% expand('%:h').'/'

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" RENAME CURRENT FILE
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
function! RenameFile()
    let old_name = expand('%')
    let new_name = input('New file name: ', expand('%'), 'file')
    if new_name != '' && new_name != old_name
        exec ':saveas ' . new_name
        exec ':silent !rm ' . old_name
        redraw!
    endif
endfunction
map <leader>n :call RenameFile()<cr>

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" PROMOTE VARIABLE TO RSPEC LET
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
function! PromoteToLet()
  :normal! dd
  " :exec '?^\s*it\>'
  :normal! P
  :.s/\(\w\+\) = \(.*\)$/let(:\1) { \2 }/
  :normal ==
endfunction
:command! PromoteToLet :call PromoteToLet()
:map <leader>p :PromoteToLet<cr>

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" EXTRACT VARIABLE (SKETCHY)
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
function! ExtractVariable()
    let name = input("Variable name: ")
    if name == ''
        return
    endif
    " Enter visual mode (not sure why this is needed since we're already in
    " visual mode anyway)
    normal! gv

    " Replace selected text with the variable name
    exec "normal c" . name
    " Define the variable on the line above
    exec "normal! O" . name . " = "
    " Paste the original selected text to be the variable value
    normal! $p
endfunction

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" INLINE VARIABLE (SKETCHY)
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
function! InlineVariable()
    " Copy the variable under the cursor into the 'a' register
    :let l:tmp_a = @a
    :normal "ayiw
    " Delete variable and equals sign
    :normal 2daW
    " Delete the expression into the 'b' register
    :let l:tmp_b = @b
    :normal "bd$
    " Delete the remnants of the line
    :normal dd
    " Go to the end of the previous line so we can start our search for the
    " usage of the variable to replace. Doing '0' instead of 'k$' doesn't
    " work; I'm not sure why.
    normal k$
    " Find the next occurence of the variable
    exec '/\<' . @a . '\>'
    " Replace that occurence with the text we yanked
    exec ':.s/\<' . @a . '\>/' . escape(@b, "/")
    :let @a = l:tmp_a
    :let @b = l:tmp_b
endfunction

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Refactoring mappings
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
vnoremap <leader>rv :call ExtractVariable()<cr>
nnoremap <leader>ri :call InlineVariable()<cr>
nnoremap <leader>rn :TsuRenameSymbol<cr>

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" MAPS TO JUMP TO SPECIFIC COMMAND-T TARGETS AND FILES
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
map <leader>gr :topleft :split config/routes.rb<cr>
function! ShowRoutes()
  " Requires 'scratch' plugin
  :topleft 100 :split __Routes__
  " Make sure Vim doesn't write __Routes__ as a file
  :set buftype=nofile
  " Delete everything
  :normal 1GdG
  " Put routes output in buffer
  :0r! rake -s routes
  " Size window to number of lines (1 plus rake output length)
  :exec ":normal " . line("$") . "_ "
  " Move cursor to bottom
  :normal 1GG
  " Delete empty trailing line
  :normal dd
endfunction
map <leader>gR :call ShowRoutes()<cr>

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" SWITCH BETWEEN TEST AND PRODUCTION CODE
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
function! OpenTestAlternate()
  let new_file = AlternateForCurrentFile()
  exec ':e ' . new_file
endfunction
function! AlternateForCurrentFile()
  let current_file = expand("%")
  let new_file = current_file
  let in_spec = match(current_file, '^spec/') != -1
  let going_to_spec = !in_spec
  let in_app = match(current_file, '\<controllers\>') != -1 || match(current_file, '\<models\>') != -1 || match(current_file, '\<workers\>') != -1 || match(current_file, '\<views\>') != -1 || match(current_file, '\<helpers\>') != -1  || match(current_file, '\<services\>') != -1
  if going_to_spec
    if in_app
      let new_file = substitute(new_file, '^app/', '', '')
    end
    let new_file = substitute(new_file, '\.e\?rb$', '_spec.rb', '')
    let new_file = 'spec/' . new_file
  else
    let new_file = substitute(new_file, '_spec\.rb$', '.rb', '')
    let new_file = substitute(new_file, '^spec/', '', '')
    if in_app
      let new_file = 'app/' . new_file
    end
  endif
  return new_file
endfunction
nnoremap <leader>. :call OpenTestAlternate()<cr>

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" RUNNING TESTS
"
" Test running here is contextual in two different ways:
"
" 1. It will guess at how to run the tests. E.g., if there's a Gemfile
"    present, it will `bundle exec rspec` so the gems are respected.
"
" 2. It remembers which tests have been run. E.g., if I'm editing user_spec.rb
"    and hit enter, it will run rspec on user_spec.rb. If I then navigate to a
"    non-test file, like routes.rb, and hit return again, it will re-run
"    user_spec.rb. It will continue using user_spec.rb as my 'default' test
"    until I hit enter in some other test file, at which point that test file
"    is run immediately and becomes the default. This is complex to describe
"    fully, but simple to use in practice: always hit enter to run tests. It
"    will run either the test file you're in or the last test file you hit
"    enter in.
"
" 3. Sometimes you want to run just one test. For that, there's <leader>T,
"    which passes the current line number to the test runner. RSpec knows what
"    to do with this (it will run the first test it finds at or below the
"    given line number). It probably won't work with other test runners.
"    'Focusing' on a single test in this way will be remembered if you hit
"    enter from non-test files, as described above.
"
" 4. Sometimes you don't want contextual test running. In that case, there's
"    <leader>a, which runs everything.
"
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
function! MapCR()
  nnoremap <cr> :call RunTestFile()<cr>
endfunction
call MapCR()
nnoremap <leader>T :call RunNearestTest()<cr>
nnoremap <leader>a :call RunTests('')<cr>

function! RunTestFile(...)
    if a:0
        let command_suffix = a:1
    else
        let command_suffix = ""
    endif

    " Are we in a test file?
    let in_test_file = match(expand("%"), '\(_spec.rb\|_test.rb\|test_.*\.py\|_test.py\|.test.ts\|.test.ts\|.spec.ts\)$') != -1

    " Run the tests for the previously-marked file (or the current file if
    " it's a test).
    if in_test_file
        call SetTestFile(command_suffix)
    elseif !exists("t:grb_test_file")
        return
    end
    call RunTests(t:grb_test_file)
endfunction

function! RunNearestTest()
    let spec_line_number = line('.')
    call RunTestFile(":" . spec_line_number)
endfunction

function! SetTestFile(command_suffix)
    " Set the spec file that tests will be run for.
    let t:grb_test_file=@% . a:command_suffix
endfunction

function! RunTests(filename)
    " Write the file and run tests for the given filename
    if expand("%") != ""
      :w
    end
    " The file is executable; assume we should run
    if executable(a:filename)
      exec ":!./" . a:filename
    " Project-specific test script
    elseif filereadable("bin/test")
      exec ":!bin/test " . a:filename
    " Rspec binstub
    elseif filereadable("bin/rspec")
      exec ":!bin/rspec " . a:filename
    " Fall back to the .test-commands pipe if available, assuming someone
    " is reading the other side and running the commands
    elseif filewritable(".test-commands")
      let cmd = 'rspec --color --format progress --require "~/lib/vim_rspec_formatter" --format VimFormatter --out tmp/quickfix'
      exec ":!echo " . cmd . " " . a:filename . " > .test-commands"

      " Write an empty string to block until the command completes
      sleep 100m " milliseconds
      :!echo > .test-commands
      redraw!
    " Fall back to a blocking test run with Bundler
    elseif filereadable("bin/rspec")
      exec ":!bin/rspec --color " . a:filename
    elseif filereadable("Gemfile") && strlen(glob("spec/**/*.rb"))
      exec ":!bundle exec rspec --color " . a:filename
    elseif filereadable("Gemfile") && strlen(glob("test/**/*.rb"))
      exec ":!bin/rails test " . a:filename
    " If we see python-looking tests, assume they should be run with Nose
    elseif strlen(glob("test/**/*.py") . glob("tests/**/*.py"))
      exec "!nosetests " . a:filename
    end
endfunction


""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Md5 COMMAND
" Show the MD5 of the current buffer
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
command! -range Md5 :echo system('echo '.shellescape(join(getline(<line1>, <line2>), '\n')) . '| md5')

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" OpenChangedFiles COMMAND
" Open a split for each dirty file in git
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
function! OpenChangedFiles()
  only " Close all windows, unless they're modified
  let status = system('git status -s | grep "^ \?\(M\|A\|UU\)" | sed "s/^.\{3\}//"')
  let filenames = split(status, "\n")
  exec "edit " . filenames[0]
  for filename in filenames[1:]
    exec "sp " . filename
  endfor
endfunction
command! OpenChangedFiles :call OpenChangedFiles()

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" InsertTime COMMAND
" Insert the current time
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
command! InsertTime :normal a<c-r>=strftime('%F %H:%M:%S.0 %z')<cr>

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" FindConditionals COMMAND
" Start a search for conditional branches, both implicit and explicit
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
command! FindConditionals :normal /\<if\>\|\<unless\>\|\<and\>\|\<or\>\|||\|&&<cr>

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Test quickfix list management
"
" If the tests write a tmp/quickfix file, these mappings will navigate through
" it
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
function! GetBufferList()
  redir =>buflist
  silent! ls
  redir END
  return buflist
endfunction

function! BufferIsOpen(bufname)
  let buflist = GetBufferList()
  for bufnum in map(filter(split(buflist, '\n'), 'v:val =~ "'.a:bufname.'"'), 'str2nr(matchstr(v:val, "\\d\\+"))')
    if bufwinnr(bufnum) != -1
      return 1
    endif
  endfor
  return 0
endfunction

function! ToggleQuickfix()
  if BufferIsOpen("Quickfix List")
    cclose
  else
    call OpenQuickfix()
  endif
endfunction

function! OpenQuickfix()
  cgetfile tmp/quickfix
  topleft cwindow
  if &ft == "qf"
      cc
  endif
endfunction

nnoremap <leader>q :call ToggleQuickfix()<cr>
nnoremap <leader>Q :cc<cr>


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" RemoveFancyCharacters COMMAND
" Remove smart quotes, etc.
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function! RemoveFancyCharacters()
    let typo = {}
    let typo["“"] = '"'
    let typo["”"] = '"'
    let typo["‘"] = "'"
    let typo["’"] = "'"
    let typo["–"] = '--'
    let typo["—"] = '---'
    let typo["…"] = '...'
    :exe ":%s/".join(keys(typo), '\|').'/\=typo[submatch(0)]/ge'
endfunction
command! RemoveFancyCharacters :call RemoveFancyCharacters()

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" Selecta Mappings
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Run a given vim command on the results of fuzzy selecting from a given shell
" command. See usage below.
function! SelectaCommand(choice_command, selecta_args, vim_command)
  try
    exec a:vim_command . " " . SelectaOutput(a:choice_command, a:selecta_args)
  catch /Vim:Interrupt/
    " Swallow the ^C so that the redraw below happens; otherwise there will be
    " leftovers from selecta on the screen
    redraw!
    return
  endtry
endfunction

function! SelectaOutput(choice_command, selecta_args)
  let selection = system(a:choice_command . " | selecta " . a:selecta_args)
  " Escape spaces in the file name. That ensures that it's a single argument
  " when concatenated with vim_command and run with exec.
  let selection = substitute(selection, ' ', '\\ ', "g")
  redraw!
  return selection
endfunction

function! SelectaFile(path, glob, command)
  call SelectaCommand("fd -t f . " . a:path, "", a:command)
endfunction

function! SelectaFileContents()
  try
    let selection = SelectaOutput("ls src/**/*.ts* | while read fn; do nl -b a \"$fn\" | while read line; do echo \"$fn:$line\"; done; done", "| cut -d \"	\" -f 1")
  catch /Vim:Interrupt/
    " Swallow the ^C so that the redraw below happens; otherwise there will be
    " leftovers from selecta on the screen
    redraw!
    return
  endtry
  exec substitute(selection, "^\\([^:]\\+\\):\\([0-9]\\+\\).*$", ":e +\\2 \\1", "")
endfunction

nnoremap <leader>f :call SelectaFile(".", "*", ":edit")<cr>
nnoremap <leader>F :call SelectaFileContents()<cr>
nnoremap <leader>gv :call SelectaFile("app/views", "*", ":edit")<cr>
nnoremap <leader>gc :call SelectaFile("app/controllers", "*", ":edit")<cr>
nnoremap <leader>gm :call SelectaFile("app/models", "*", ":edit")<cr>
nnoremap <leader>gh :call SelectaFile("app/helpers", "*", ":edit")<cr>
nnoremap <leader>gl :call SelectaFile("lib", "*", ":edit")<cr>
nnoremap <leader>gp :call SelectaFile("public", "*", ":edit")<cr>
nnoremap <leader>gs :call SelectaFile("app/assets/stylesheets", "*.sass", ":edit")<cr>
nnoremap <leader>e :call SelectaFile(expand('%:h'), "*", ":edit")<cr>
nnoremap <leader>v :call SelectaFile(expand('%:h'), "*", ":view")<cr>

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" Typescript Mappings
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
nnoremap <leader>d :TsuDefinition<cr>
nnoremap <leader>D :TsuTypeDefinition<cr>

"Fuzzy select
function! SelectaIdentifier()
  " Yank the word under the cursor into the z register
  normal "zyiw
  " Fuzzy match files in the current directory, starting with the word under
  " the cursor
  call SelectaCommand("find * -type f", "-s " . @z, ":e")
endfunction
nnoremap <c-g> :call SelectaIdentifier()<cr>

" Show the vim highlight groups for whatever's under the cursor. This is only
" useful for debugging vim color schemes.
nnoremap <leader>h :echo "hi<" . synIDattr(synID(line("."),col("."),1),"name") . '> trans<' . synIDattr(synID(line("."),col("."),0),"name") ."> lo<" . synIDattr(synIDtrans(synID(line("."),col("."),1)),"name") . ">"<CR>

" These two functions are specific to Execute Program. You don't need them.
function! GenerateStepID()
  :r!bin/generate-step-id
  :normal k
  :normal J
  :normal x
endfunction
function! ReplaceStepID()
  " Delete the existing ID.
  normal diw
  " Move the cursor to the # that marked the ID.
  normal 0f#
  " Insert a newline, separating the part of the original line before the #
  " from the part after.
  execute "normal! a\n\<esc>"
  " Remove all whitespace before this line (the second one, containing what
  " was after the #).
  left
  " Move back up to the first half of the original line
  normal k
  " Generate a new step ID below this line
  :r!bin/generate-step-id
  " Move back up to the first half of the original line again
  normal k
  " Join with the new step ID
  normal gJ
  " Join with whatever was after the original step ID
  normal gJ
endfunction
nnoremap <leader>s :call GenerateStepID()<cr>
nnoremap <leader>S :call ReplaceStepID()<cr>