Fix #81 *WIP*

autoload/gista/util/prompt.vim

@@ -1,5 +1,5 @@
 let s:V = gista#vital()
-let s:Prompt = s:V.import('Vim.Prompt')
+let s:Console = s:V.import('Vim.Console')
 
 function! s:is_debug() abort
   return g:gista#debug
@@ -9,25 +9,25 @@ function! s:is_batch() abort
 endfunction
 
 function! gista#util#prompt#debug(...) abort
-  call call(s:Prompt.debug, a:000, s:Prompt)
+  call call(s:Console.debug, a:000, s:Console)
 endfunction
 function! gista#util#prompt#info(...) abort
-  call call(s:Prompt.info, a:000, s:Prompt)
+  call call(s:Console.info, a:000, s:Console)
 endfunction
 function! gista#util#prompt#warn(...) abort
-  call call(s:Prompt.warn, a:000, s:Prompt)
+  call call(s:Console.warn, a:000, s:Console)
 endfunction
 function! gista#util#prompt#error(...) abort
-  call call(s:Prompt.error, a:000, s:Prompt)
+  call call(s:Console.error, a:000, s:Console)
 endfunction
 function! gista#util#prompt#ask(...) abort
-  return call(s:Prompt.ask, a:000, s:Prompt)
+  return call(s:Console.ask, a:000, s:Console)
 endfunction
 function! gista#util#prompt#select(...) abort
-  return call(s:Prompt.select, a:000, s:Prompt)
+  return call(s:Console.select, a:000, s:Console)
 endfunction
 function! gista#util#prompt#confirm(...) abort
-  return call(s:Prompt.confirm, a:000, s:Prompt)
+  return call(s:Console.confirm, a:000, s:Console)
 endfunction
 
 function! gista#util#prompt#indicate(options, message) abort
@@ -36,7 +36,7 @@ function! gista#util#prompt#indicate(options, message) abort
   endif
 endfunction
 
-call s:Prompt.set_config({
+call s:Console.set_config({
       \ 'debug': function('s:is_debug'),
       \ 'batch': function('s:is_batch'),
       \})

autoload/vital/_vim_gista/Data/List.vim

@@ -3,13 +3,13 @@
 " Do not mofidify the code nor insert new lines before '" ___vital___'
 if v:version > 703 || v:version == 703 && has('patch1170')
   function! vital#_vim_gista#Data#List#import() abort
-    return map({'combinations': '', 'and': '', 'sort_by': '', 'foldr1': '', 'sort': '', 'flatten': '', 'has_index': '', 'find_indices': '', 'any': '', 'unshift': '', 'span': '', 'pop': '', 'binary_search': '', 'uniq_by': '', 'or': '', 'all': '', 'zip': '', 'find_last_index': '', 'find': '', 'partition': '', 'map_accum': '', 'permutations': '', 'break': '', 'max_by': '', 'foldl': '', 'foldr': '', 'find_index': '', 'group_by': '', 'take_while': '', 'conj': '', 'push': '', 'char_range': '', 'cons': '', 'foldl1': '', 'intersect': '', 'concat': '', 'shift': '', 'clear': '', 'has_common_items': '', 'product': '', 'zip_fill': '', 'uniq': '', 'has': '', 'min_by': '', 'with_index': ''},  'function("s:" . v:key)')
+    return map({'combinations': '', 'and': '', 'sort_by': '', 'foldr1': '', 'sort': '', 'flatten': '', 'has_index': '', 'find_indices': '', 'any': '', 'unshift': '', 'span': '', 'pop': '', 'binary_search': '', 'uniq_by': '', 'or': '', 'all': '', 'zip': '', 'find_last_index': '', 'find': '', 'partition': '', 'shift': '', 'permutations': '', 'break': '', 'max_by': '', 'foldl': '', 'foldr': '', 'find_index': '', 'drop_while': '', 'group_by': '', 'take_while': '', 'conj': '', 'push': '', 'char_range': '', 'cons': '', 'foldl1': '', 'intersect': '', 'concat': '', 'map_accum': '', 'clear': '', 'has_common_items': '', 'product': '', 'zip_fill': '', 'uniq': '', 'has': '', 'min_by': '', 'with_index': ''},  'function("s:" . v:key)')
   endfunction
 else
   function! s:_SID() abort
     return matchstr(expand('<sfile>'), '<SNR>\zs\d\+\ze__SID$')
   endfunction
-  execute join(['function! vital#_vim_gista#Data#List#import() abort', printf("return map({'combinations': '', 'and': '', 'sort_by': '', 'foldr1': '', 'sort': '', 'flatten': '', 'has_index': '', 'find_indices': '', 'any': '', 'unshift': '', 'span': '', 'pop': '', 'binary_search': '', 'uniq_by': '', 'or': '', 'all': '', 'zip': '', 'find_last_index': '', 'find': '', 'partition': '', 'map_accum': '', 'permutations': '', 'break': '', 'max_by': '', 'foldl': '', 'foldr': '', 'find_index': '', 'group_by': '', 'take_while': '', 'conj': '', 'push': '', 'char_range': '', 'cons': '', 'foldl1': '', 'intersect': '', 'concat': '', 'shift': '', 'clear': '', 'has_common_items': '', 'product': '', 'zip_fill': '', 'uniq': '', 'has': '', 'min_by': '', 'with_index': ''}, \"function('<SNR>%s_' . v:key)\")", s:_SID()), 'endfunction'], "\n")
+  execute join(['function! vital#_vim_gista#Data#List#import() abort', printf("return map({'combinations': '', 'and': '', 'sort_by': '', 'foldr1': '', 'sort': '', 'flatten': '', 'has_index': '', 'find_indices': '', 'any': '', 'unshift': '', 'span': '', 'pop': '', 'binary_search': '', 'uniq_by': '', 'or': '', 'all': '', 'zip': '', 'find_last_index': '', 'find': '', 'partition': '', 'shift': '', 'permutations': '', 'break': '', 'max_by': '', 'foldl': '', 'foldr': '', 'find_index': '', 'drop_while': '', 'group_by': '', 'take_while': '', 'conj': '', 'push': '', 'char_range': '', 'cons': '', 'foldl1': '', 'intersect': '', 'concat': '', 'map_accum': '', 'clear': '', 'has_common_items': '', 'product': '', 'zip_fill': '', 'uniq': '', 'has': '', 'min_by': '', 'with_index': ''}, \"function('<SNR>%s_' . v:key)\")", s:_SID()), 'endfunction'], "\n")
   delfunction s:_SID
 endif
 " ___vital___
@@ -188,6 +188,11 @@ function! s:take_while(f, xs) abort
   return s:span(a:f, a:xs)[0]
 endfunction
 
+" similar to Haskell's Data.List.dropWhile
+function! s:drop_while(f, xs) abort
+  return s:span(a:f, a:xs)[1]
+endfunction
+
 " similar to Haskell's Data.List.partition
 function! s:partition(f, xs) abort
   return [filter(copy(a:xs), a:f), filter(copy(a:xs), '!(' . a:f . ')')]
@@ -439,7 +444,7 @@ function! s:combinations(list, r) abort
   if a:r > len(a:list)
     return []
   elseif a:r < 0
-    throw 'vital: Data:List: {r} must be non-negative integer'
+    throw 'vital: Data.List: {r} must be non-negative integer'
   endif
   let n = len(a:list)
   let result = []

autoload/vital/_vim_gista/Data/String.vim

@@ -3,13 +3,13 @@
 " Do not mofidify the code nor insert new lines before '" ___vital___'
 if v:version > 703 || v:version == 703 && has('patch1170')
   function! vital#_vim_gista#Data#String#import() abort
-    return map({'starts_with': '', 'split3': '', 'chop': '', 'unescape': '', 'split_posix_text': '', 'replace': '', 'scan': '', 'strchars': '', 'strwidthpart': '', 'common_head': '', 'reverse': '', 'escape_pattern': '', 'trim_end': '', '_vital_depends': '', 'wrap': '', 'join_posix_lines': '', 'contains_multibyte': '', 'truncate_skipping': '', 'split_leftright': '', 'ends_with': '', 'nsplit': '', 'substitute_last': '', 'strwidthpart_reverse': '', 'unescape_pattern': '', 'levenshtein_distance': '', 'trim_start': '', 'nr2hex': '', 'remove_ansi_sequences': '', 'iconv': '', 'pad_left': '', 'nr2enc_char': '', 'lines': '', 'repair_posix_text': '', 'nr2byte': '', 'trim': '', 'diffidx': '', 'truncate': '', 'split_by_displaywidth': '', 'padding_by_displaywidth': '', 'hash': '', 'chomp': '', 'pad_between_letters': '', 'wcswidth': '', 'dstring': '', 'pad_both_sides': '', 'justify_equal_spacing': '', 'pad_right': '', 'replace_first': '', '_vital_loaded': ''},  'function("s:" . v:key)')
+    return map({'starts_with': '', 'split3': '', 'replace_first': '', 'chop': '', 'unescape': '', 'split_posix_text': '', 'replace': '', 'scan': '', 'strwidthpart': '', 'common_head': '', 'reverse': '', 'escape_pattern': '', 'trim_end': '', '_vital_depends': '', 'wrap': '', 'join_posix_lines': '', 'contains_multibyte': '', 'truncate_skipping': '', 'split_leftright': '', 'ends_with': '', 'nsplit': '', 'strwidthpart_reverse': '', 'unescape_pattern': '', 'levenshtein_distance': '', 'trim_start': '', 'justify_equal_spacing': '', 'nr2hex': '', 'iconv': '', 'pad_left': '', 'nr2enc_char': '', 'lines': '', 'repair_posix_text': '', 'nr2byte': '', 'trim': '', 'diffidx': '', 'truncate': '', 'split_by_displaywidth': '', '_vital_created': '', 'padding_by_displaywidth': '', 'hash': '', 'chomp': '', 'pad_between_letters': '', 'dstring': '', 'pad_both_sides': '', 'substitute_last': '', 'pad_right': '', 'remove_ansi_sequences': '', '_vital_loaded': ''},  'function("s:" . v:key)')
   endfunction
 else
   function! s:_SID() abort
     return matchstr(expand('<sfile>'), '<SNR>\zs\d\+\ze__SID$')
   endfunction
-  execute join(['function! vital#_vim_gista#Data#String#import() abort', printf("return map({'starts_with': '', 'split3': '', 'chop': '', 'unescape': '', 'split_posix_text': '', 'replace': '', 'scan': '', 'strchars': '', 'strwidthpart': '', 'common_head': '', 'reverse': '', 'escape_pattern': '', 'trim_end': '', '_vital_depends': '', 'wrap': '', 'join_posix_lines': '', 'contains_multibyte': '', 'truncate_skipping': '', 'split_leftright': '', 'ends_with': '', 'nsplit': '', 'substitute_last': '', 'strwidthpart_reverse': '', 'unescape_pattern': '', 'levenshtein_distance': '', 'trim_start': '', 'nr2hex': '', 'remove_ansi_sequences': '', 'iconv': '', 'pad_left': '', 'nr2enc_char': '', 'lines': '', 'repair_posix_text': '', 'nr2byte': '', 'trim': '', 'diffidx': '', 'truncate': '', 'split_by_displaywidth': '', 'padding_by_displaywidth': '', 'hash': '', 'chomp': '', 'pad_between_letters': '', 'wcswidth': '', 'dstring': '', 'pad_both_sides': '', 'justify_equal_spacing': '', 'pad_right': '', 'replace_first': '', '_vital_loaded': ''}, \"function('<SNR>%s_' . v:key)\")", s:_SID()), 'endfunction'], "\n")
+  execute join(['function! vital#_vim_gista#Data#String#import() abort', printf("return map({'starts_with': '', 'split3': '', 'replace_first': '', 'chop': '', 'unescape': '', 'split_posix_text': '', 'replace': '', 'scan': '', 'strwidthpart': '', 'common_head': '', 'reverse': '', 'escape_pattern': '', 'trim_end': '', '_vital_depends': '', 'wrap': '', 'join_posix_lines': '', 'contains_multibyte': '', 'truncate_skipping': '', 'split_leftright': '', 'ends_with': '', 'nsplit': '', 'strwidthpart_reverse': '', 'unescape_pattern': '', 'levenshtein_distance': '', 'trim_start': '', 'justify_equal_spacing': '', 'nr2hex': '', 'iconv': '', 'pad_left': '', 'nr2enc_char': '', 'lines': '', 'repair_posix_text': '', 'nr2byte': '', 'trim': '', 'diffidx': '', 'truncate': '', 'split_by_displaywidth': '', '_vital_created': '', 'padding_by_displaywidth': '', 'hash': '', 'chomp': '', 'pad_between_letters': '', 'dstring': '', 'pad_both_sides': '', 'substitute_last': '', 'pad_right': '', 'remove_ansi_sequences': '', '_vital_loaded': ''}, \"function('<SNR>%s_' . v:key)\")", s:_SID()), 'endfunction'], "\n")
   delfunction s:_SID
 endif
 " ___vital___
@@ -27,6 +27,16 @@ function! s:_vital_depends() abort
   return ['Data.List']
 endfunction
 
+function! s:_vital_created(module) abort
+  " Expose script-local funcref
+  if exists('s:strchars')
+    let a:module.strchars = s:strchars
+  endif
+  if exists('s:wcswidth')
+    let a:module.wcswidth = s:wcswidth
+  endif
+endfunction
+
 " Substitute a:from => a:to by string.
 " To substitute by pattern, use substitute() instead.
 function! s:replace(str, from, to) abort
@@ -142,9 +152,7 @@ endfunction
 " even if a:str contains multibyte character(s).
 " s:strchars(str) {{{
 if exists('*strchars')
-  function! s:strchars(str) abort
-    return strchars(a:str)
-  endfunction
+  let s:strchars = function('strchars')
 else
   function! s:strchars(str) abort
     return strlen(substitute(copy(a:str), '.', 'x', 'g'))
@@ -452,8 +460,9 @@ function! s:truncate(str, width) abort
   " http://github.com/mattn/googlereader-vim/tree/master
 
   if a:str =~# '^[\x00-\x7f]*$'
-    return len(a:str) < a:width ?
-          \ printf('%-'.a:width.'s', a:str) : strpart(a:str, 0, a:width)
+    return len(a:str) < a:width
+          \ ? printf('%-' . a:width . 's', a:str)
+          \ : strpart(a:str, 0, a:width)
   endif
 
   let ret = a:str
@@ -483,57 +492,20 @@ function! s:truncate_skipping(str, max, footer_width, separator) abort
 endfunction
 
 function! s:strwidthpart(str, width) abort
-  if a:width <= 0
-    return ''
-  endif
-  let strarr = split(a:str, '\zs')
-  let width = s:wcswidth(a:str)
-  let index = len(strarr)
-  let diff = (index + 1) / 2
-  let rightindex = index - 1
-  while width > a:width
-    let index = max([rightindex - diff + 1, 0])
-    let partwidth = s:wcswidth(join(strarr[(index):(rightindex)], ''))
-    if width - partwidth >= a:width || diff <= 1
-      let width -= partwidth
-      let rightindex = index - 1
-    endif
-    if diff > 1
-      let diff = diff / 2
-    endif
-  endwhile
-  return index ? join(strarr[:index - 1], '') : ''
+  let str = tr(a:str, "\t", ' ')
+  let vcol = a:width + 2
+  return matchstr(str, '.*\%<' . (vcol < 0 ? 0 : vcol) . 'v')
 endfunction
 
 function! s:strwidthpart_reverse(str, width) abort
-  if a:width <= 0
-    return ''
-  endif
-  let strarr = split(a:str, '\zs')
-  let width = s:wcswidth(a:str)
-  let strlen = len(strarr)
-  let diff = (strlen + 1) / 2
-  let leftindex = 0
-  let index = -1
-  while width > a:width
-    let index = min([leftindex + diff, strlen]) - 1
-    let partwidth = s:wcswidth(join(strarr[(leftindex):(index)], ''))
-    if width - partwidth >= a:width || diff <= 1
-      let width -= partwidth
-      let leftindex = index + 1
-    endif
-    if diff > 1
-      let diff = diff / 2
-    endif
-  endwhile
-  return index < strlen ? join(strarr[(index + 1):], '') : ''
+  let str = tr(a:str, "\t", ' ')
+  let vcol = s:wcswidth(str) - a:width
+  return matchstr(str, '\%>' . (vcol < 0 ? 0 : vcol) . 'v.*')
 endfunction
 
 if v:version >= 703
   " Use builtin function.
-  function! s:wcswidth(str) abort
-    return strwidth(a:str)
-  endfunction
+  let s:wcswidth = function('strwidth')
 else
   function! s:wcswidth(str) abort
     if a:str =~# '^[\x00-\x7f]*$'
@@ -577,7 +549,7 @@ else
 endif
 
 function! s:remove_ansi_sequences(text) abort
-  return substitute(a:text, '\e\[\%(\%(\d;\)\?\d\{1,2}\)\?[mK]', '', 'g')
+  return substitute(a:text, '\e\[\%(\%(\d\+;\)*\d\+\)\?[mK]', '', 'g')
 endfunction
 
 function! s:escape_pattern(str) abort

autoload/vital/_vim_gista/Prelude.vim

@@ -39,21 +39,37 @@ else
 endif
 
 " Wrapper functions for type().
-let [
-\   s:__TYPE_NUMBER,
-\   s:__TYPE_STRING,
-\   s:__TYPE_FUNCREF,
-\   s:__TYPE_LIST,
-\   s:__TYPE_DICT,
-\   s:__TYPE_FLOAT] = [
-      \   type(3),
-      \   type(''),
-      \   type(function('tr')),
-      \   type([]),
-      \   type({}),
-      \   has('float') ? type(str2float('0')) : -1]
-" __TYPE_FLOAT = -1 when -float
-" This doesn't match to anything.
+" NOTE: __TYPE_FLOAT = -1 when -float.
+" this doesn't match to anything.
+if has('patch-7.4.2071')
+  let [
+  \   s:__TYPE_NUMBER,
+  \   s:__TYPE_STRING,
+  \   s:__TYPE_FUNCREF,
+  \   s:__TYPE_LIST,
+  \   s:__TYPE_DICT,
+  \   s:__TYPE_FLOAT] = [
+        \   v:t_number,
+        \   v:t_string,
+        \   v:t_func,
+        \   v:t_list,
+        \   v:t_dict,
+        \   v:t_float]
+else
+  let [
+  \   s:__TYPE_NUMBER,
+  \   s:__TYPE_STRING,
+  \   s:__TYPE_FUNCREF,
+  \   s:__TYPE_LIST,
+  \   s:__TYPE_DICT,
+  \   s:__TYPE_FLOAT] = [
+        \   type(3),
+        \   type(''),
+        \   type(function('tr')),
+        \   type([]),
+        \   type({}),
+        \   has('float') ? type(str2float('0')) : -1]
+endif
 
 " Number or Float
 function! s:is_numeric(Value) abort
@@ -67,27 +83,32 @@ function! s:is_number(Value) abort
   return type(a:Value) ==# s:__TYPE_NUMBER
 endfunction
 
-" Float
-function! s:is_float(Value) abort
-  return type(a:Value) ==# s:__TYPE_FLOAT
-endfunction
 " String
 function! s:is_string(Value) abort
   return type(a:Value) ==# s:__TYPE_STRING
 endfunction
+
 " Funcref
 function! s:is_funcref(Value) abort
   return type(a:Value) ==# s:__TYPE_FUNCREF
 endfunction
+
 " List
 function! s:is_list(Value) abort
   return type(a:Value) ==# s:__TYPE_LIST
 endfunction
+
 " Dictionary
 function! s:is_dict(Value) abort
   return type(a:Value) ==# s:__TYPE_DICT
 endfunction
 
+" Float
+function! s:is_float(Value) abort
+  return type(a:Value) ==# s:__TYPE_FLOAT
+endfunction
+
+
 function! s:truncate_skipping(str, max, footer_width, separator) abort
   call s:_warn_deprecated('truncate_skipping', 'Data.String.truncate_skipping')
 

autoload/vital/_vim_gista/Process.vim

@@ -53,7 +53,7 @@ function! s:spawn(expr, ...) abort
         let cmdline = substitute(cmdline, '\([!%#]\|<[^<>]\+>\)', '\\\1', 'g')
       endif
     else
-      throw 'Process.spawn(): invalid argument (value type:'.type(a:expr).')'
+      throw 'vital: Process: invalid argument (value type:' . type(a:expr) . ')'
     endif
     if s:is_windows
       silent execute '!start' cmdline
@@ -126,7 +126,7 @@ function! s:system(str, ...) abort
     elseif type(a:1) is s:TYPE_STRING
       let args += [s:iconv(a:1, &encoding, 'char')]
     else
-      throw 'Process.system(): invalid argument (value type:'.type(a:1).')'
+      throw 'vital: Process: invalid argument (value type:' . type(a:1) . ')'
     endif
   elseif a:0 >= 2
     " {command} [, {input} [, {timeout}]]
@@ -143,13 +143,16 @@ function! s:system(str, ...) abort
   elseif type(a:str) is s:TYPE_STRING
     let command = a:str
   else
-    throw 'Process.system(): invalid argument (value type:'.type(a:str).')'
+    throw 'vital: Process: invalid argument (value type:' . type(a:str) . ')'
   endif
   if s:need_trans
     let command = s:iconv(command, &encoding, 'char')
   endif
   let args = [command] + args
   if background && (use_vimproc || !s:is_windows)
+    if has('nvim')
+      throw "vital: Process: neovim's system() doesn't support background(&) process (cmdline:" . a:str . ')'
+    endif
     let args[0] = args[0] . ' &'
   endif
 

autoload/vital/_vim_gista/System/Filepath.vim

@@ -129,7 +129,7 @@ endfunction
 " Check if the path is absolute path.
 if s:is_windows
   function! s:is_absolute(path) abort
-    return a:path =~? '^[a-z]:[/\\]'
+    return a:path =~# '^[a-zA-Z]:[/\\]'
   endfunction
 else
   function! s:is_absolute(path) abort