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	Problem: Indenting text is a common task in plugins/scripts for presentation/formatting, yet vim has no way of doing it (especially "dedent", and especially non-buffer text). Solution: Introduce `vim.text.indent()`. It sets the *exact* indentation because that's a more difficult (and thus more useful) task than merely "increasing the current indent" (which is somewhat easy with a `gsub()` one-liner).
		
			
				
	
	
		
			195 lines
		
	
	
		
			7.8 KiB
		
	
	
	
		
			Lua
		
	
	
	
	
	
			
		
		
	
	
			195 lines
		
	
	
		
			7.8 KiB
		
	
	
	
		
			Lua
		
	
	
	
	
	
-- Tests for 'listchars' display with 'list' and :list.
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local n = require('test.functional.testnvim')()
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local Screen = require('test.functional.ui.screen')
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local feed, insert, exec = n.feed, n.insert, n.exec
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local clear, feed_command, expect = n.clear, n.feed_command, n.expect
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-- luacheck: ignore 621 (Indentation)
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describe("'listchars'", function()
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  before_each(function()
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    clear()
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    feed_command('set listchars=eol:$')
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  end)
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  -- luacheck: ignore 613 (Trailing whitespace in a string)
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  it("works with 'list'", function()
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    exec([[
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      function GetScreenCharsForLine(lnum)
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        return join(map(range(1, virtcol('$')), 'nr2char(screenchar(a:lnum, v:val))'), '')
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      endfunction
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      nnoremap <expr> GG ":call add(g:lines, GetScreenCharsForLine(".screenrow()."))\<CR>"
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    ]])
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    insert([[
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      start:
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      	aa	
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        bb	  
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         cccc	 
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      dd        ee  	
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       ]])
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    feed_command('let g:lines = []')
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    -- Set up 'listchars', switch on 'list', and use the "GG" mapping to record
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    -- what the buffer lines look like.
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    feed_command('set listchars+=tab:>-,space:.,trail:<')
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    feed_command('set list')
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    feed_command('/^start:/')
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    feed_command('normal! jzt')
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    feed('GG<cr>')
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    feed('GG<cr>')
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    feed('GG<cr>')
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    feed('GG<cr>')
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    feed('GGH')
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    -- Repeat without displaying "trail" spaces.
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    feed_command('set listchars-=trail:<')
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    feed('GG<cr>')
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    feed('GG<cr>')
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    feed('GG<cr>')
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    feed('GG<cr>')
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    feed('GG')
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    -- Delete the buffer contents and :put the collected lines.
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    feed_command('%d')
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    feed_command('put =g:lines', '1d')
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    -- Assert buffer contents.
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    expect([[
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      >-------aa>-----$
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      ..bb>---<<$
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      ...cccc><$
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      dd........ee<<>-$
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      $
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      >-------aa>-----$
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      ..bb>---..$
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      ...cccc>.$
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      dd........ee..>-$
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      $]])
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  end)
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  it('works with :list', function()
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    insert([[
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      start:
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        fff	  
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      	gg	
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           h	
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      iii    	  ]])
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    -- Set up 'listchars', switch 'list' *off* (:list must show the 'listchars'
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    -- even when 'list' is off), then run :list and collect the output.
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    feed_command('set listchars+=tab:>-,space:.,trail:<')
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    feed_command('set nolist')
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    feed_command('/^start:/')
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    feed_command('redir! => g:lines')
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    feed_command('+1,$list')
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    feed_command('redir END')
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    -- Delete the buffer contents and :put the collected lines.
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    feed_command('%d')
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    feed_command('put =g:lines', '1d')
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    -- Assert buffer contents.
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    expect([[
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      ..fff>--<<$
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      >-------gg>-----$
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      .....h>-$
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      iii<<<<><<$]])
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  end)
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  it('"exceeds" character does not appear in foldcolumn vim-patch:8.2.3121', function()
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    local screen = Screen.new(60, 10)
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    exec([[
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      call setline(1, ['aaa', '', 'a', 'aaaaaa'])
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      vsplit
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      vsplit
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      windo set signcolumn=yes foldcolumn=1 winminwidth=0 nowrap list listchars=extends:>,precedes:<
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    ]])
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    feed('13<C-W>>')
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    screen:expect([[
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      {7:   }aaa              │{7:   }a{1:>}│{7:   }^aaa                           |
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      {7:   }                 │{7:   }  │{7:   }                              |
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      {7:   }a                │{7:   }a │{7:   }a                             |
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      {7:   }aaaaaa           │{7:   }a{1:>}│{7:   }aaaaaa                        |
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      {1:~                   }│{1:~    }│{1:~                                }|*4
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      {2:[No Name] [+]        <[+]  }{3:[No Name] [+]                    }|
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                                                                  |
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    ]])
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    feed('<C-W>>')
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    screen:expect([[
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      {7:   }aaa              │{7:   }{1:>}│{7:   }^aaa                            |
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      {7:   }                 │{7:   } │{7:   }                               |
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      {7:   }a                │{7:   }a│{7:   }a                              |
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      {7:   }aaaaaa           │{7:   }{1:>}│{7:   }aaaaaa                         |
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      {1:~                   }│{1:~   }│{1:~                                 }|*4
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      {2:[No Name] [+]        <+]  }{3:[No Name] [+]                     }|
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                                                                  |
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    ]])
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    feed('<C-W>>')
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    screen:expect([[
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      {7:   }aaa              │{7:   }│{7:   }^aaa                             |
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      {7:   }                 │{7:   }│{7:   }                                |
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      {7:   }a                │{7:   }│{7:   }a                               |
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      {7:   }aaaaaa           │{7:   }│{7:   }aaaaaa                          |
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      {1:~                   }│{1:~  }│{1:~                                  }|*4
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      {2:[No Name] [+]        <]  }{3:[No Name] [+]                      }|
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                                                                  |
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    ]])
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    feed('<C-W>>')
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    screen:expect([[
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      {7:   }aaa              │{7:  }│{7:   }^aaa                              |
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      {7:   }                 │{7:  }│{7:   }                                 |
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      {7:   }a                │{7:  }│{7:   }a                                |
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      {7:   }aaaaaa           │{7:  }│{7:   }aaaaaa                           |
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      {1:~                   }│{1:~ }│{1:~                                   }|*4
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      {2:[No Name] [+]        <  }{3:[No Name] [+]                       }|
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                                                                  |
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    ]])
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    feed('<C-W>>')
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    screen:expect([[
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      {7:   }aaa              │{7: }│{7:   }^aaa                               |
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      {7:   }                 │{7: }│{7:   }                                  |
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      {7:   }a                │{7: }│{7:   }a                                 |
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      {7:   }aaaaaa           │{7: }│{7:   }aaaaaa                            |
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      {1:~                   }│{1:~}│{1:~                                    }|*4
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      {2:[No Name] [+]        < }{3:[No Name] [+]                        }|
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                                                                  |
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    ]])
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    feed('<C-W>h')
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    feed_command('set nowrap foldcolumn=4')
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    screen:expect([[
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      {7:   }aaa              │{7:      }^aaa           │{7:   }aaa            |
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      {7:   }                 │{7:      }              │{7:   }               |
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      {7:   }a                │{7:      }a             │{7:   }a              |
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      {7:   }aaaaaa           │{7:      }aaaaaa        │{7:   }aaaaaa         |
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      {1:~                   }│{1:~                   }│{1:~                 }|*4
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      {2:[No Name] [+]        }{3:[No Name] [+]        }{2:[No Name] [+]     }|
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      :set nowrap foldcolumn=4                                    |
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    ]])
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    feed('15<C-W><lt>')
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    screen:expect([[
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      {7:   }aaa              │{7:     }│{7:   }aaa                           |
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      {7:   }                 │{7:     }│{7:   }                              |
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      {7:   }a                │{7:     }│{7:   }a                             |
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      {7:   }aaaaaa           │{7:    ^ }│{7:   }aaaaaa                        |
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      {1:~                   }│{1:~    }│{1:~                                }|*4
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      {2:[No Name] [+]        }{3:<[+]  }{2:[No Name] [+]                    }|
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      :set nowrap foldcolumn=4                                    |
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    ]])
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    feed('4<C-W><lt>')
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    screen:expect([[
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      {7:   }aaa              │{7: }│{7:   }aaa                               |
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      {7:   }                 │{7: }│{7:   }                                  |
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      {7:   }a                │{7: }│{7:   }a                                 |
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      {7:   }aaaaaa           │{7:^ }│{7:   }aaaaaa                            |
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      {1:~                   }│{1:~}│{1:~                                    }|*4
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      {2:[No Name] [+]        }{3:< }{2:[No Name] [+]                        }|
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      :set nowrap foldcolumn=4                                    |
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    ]])
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  end)
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end)
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