vim: src/README.md annotate

annotate src/README.md @ 21417:53ff4dfe6e11 v8.2.1259

patch 8.2.1259: empty group in 'tabline' may cause using an invalid pointer Commit: https://github.com/vim/vim/commit/f56c95fdad5af521887f8cd7bc15729b5355231d Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jul 21 19:25:18 2020 +0200 patch 8.2.1259: empty group in 'tabline' may cause using an invalid pointer Problem: Empty group in 'tabline' may cause using an invalid pointer. Solution: Set the group start position. (closes https://github.com/vim/vim/issues/6505)

author	Bram Moolenaar <Bram@vim.org>
date	Tue, 21 Jul 2020 19:30:04 +0200
parents	b1fac55cf8a3
children	5db63c2c6929

rev	line source
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	1 ![Vim Logo](https://github.com/vim/vim/blob/master/runtime/vimlogo.gif)
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	2
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	3 # Vim source code #
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	4
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	5 Here are a few hints for finding your way around the source code. This
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	6 doesn't make it less complex than it is, but it gets you started.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	7
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	8 You might also want to read
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	9 [`:help development`](http://vimdoc.sourceforge.net/htmldoc/develop.html#development).
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	10
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	11
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	12 ## Jumping around ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	13
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	14 First of all, use `:make tags` to generate a tags file, so that you can jump
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	15 around in the source code.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	16
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	17 To jump to a function or variable definition, move the cursor on the name and
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	18 use the `CTRL-]` command. Use `CTRL-T` or `CTRL-O` to jump back.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	19
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	20 To jump to a file, move the cursor on its name and use the `gf` command.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	21
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	22 Most code can be found in a file with an obvious name (incomplete list):
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	23
17377 cb008de2a6ec patch 8.1.1687: the evalfunc.c file is too big Bram Moolenaar <Bram@vim.org> parents: 17370 diff changeset	24 File name \| Description
cb008de2a6ec patch 8.1.1687: the evalfunc.c file is too big Bram Moolenaar <Bram@vim.org> parents: 17370 diff changeset	25 --------------- \| -----------
17744 4a3dca734d36 patch 8.1.1869: code for the argument list is spread out Bram Moolenaar <Bram@vim.org> parents: 17652 diff changeset	26 arglist.c \| handling argument list
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	27 autocmd.c \| autocommands
17652 9efb4dda9720 patch 8.1.1823: command line history code is spread out Bram Moolenaar <Bram@vim.org> parents: 17576 diff changeset	28 blob.c \| blob data type
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	29 buffer.c \| manipulating buffers (loaded files)
18199 e2be5a6485f5 patch 8.1.2094: the fileio.c file is too big Bram Moolenaar <Bram@vim.org> parents: 18174 diff changeset	30 bufwrite.c \| writing a buffer to file
16632 30de89c1d090 patch 8.1.1318: code for text changes is in a "misc" file Bram Moolenaar <Bram@vim.org> parents: 16411 diff changeset	31 change.c \| handling changes to text
18265 fe5afdc03bd2 patch 8.1.2127: the indent.c file is a bit big Bram Moolenaar <Bram@vim.org> parents: 18199 diff changeset	32 cindent.c \| C and Lisp indentation
19920 5e41b2e63c73 patch 8.2.0516: client-server code is spread out Bram Moolenaar <Bram@vim.org> parents: 19774 diff changeset	33 clientserver.c \| client server functionality
19774 00a1b89256ea patch 8.2.0443: clipboard code is spread out Bram Moolenaar <Bram@vim.org> parents: 19396 diff changeset	34 clipboard.c \| handling the clipboard
17779 87a8760babec patch 8.1.1886: command line expansion code is spread out Bram Moolenaar <Bram@vim.org> parents: 17744 diff changeset	35 cmdexpand.c \| command-line completion
17652 9efb4dda9720 patch 8.1.1823: command line history code is spread out Bram Moolenaar <Bram@vim.org> parents: 17576 diff changeset	36 cmdhist.c \| command-line history
16391 3fc956fc63b6 patch 8.1.1200: old style comments in debugger source Bram Moolenaar <Bram@vim.org> parents: 16186 diff changeset	37 debugger.c \| vim script debugger
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	38 diff.c \| diff mode (vimdiff)
18124 2a806e3c39f6 patch 8.1.2057: the screen.c file is much too big Bram Moolenaar <Bram@vim.org> parents: 18100 diff changeset	39 drawline.c \| drawing a window line
2a806e3c39f6 patch 8.1.2057: the screen.c file is much too big Bram Moolenaar <Bram@vim.org> parents: 18100 diff changeset	40 drawscreen.c \| drawing the windows
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	41 eval.c \| expression evaluation
18010 cf8e0c7e0cb9 patch 8.1.2001: some source files are too big Bram Moolenaar <Bram@vim.org> parents: 17966 diff changeset	42 evalbuffer.c \| buffer related built-in functions
16411 5b5c5daf57de patch 8.1.1210: support for user commands is spread out Bram Moolenaar <Bram@vim.org> parents: 16407 diff changeset	43 evalfunc.c \| built-in functions
17873 d50a5faa75bd patch 8.1.1933: the eval.c file is too big Bram Moolenaar <Bram@vim.org> parents: 17861 diff changeset	44 evalvars.c \| vim variables
18010 cf8e0c7e0cb9 patch 8.1.2001: some source files are too big Bram Moolenaar <Bram@vim.org> parents: 17966 diff changeset	45 evalwindow.c \| window related built-in functions
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	46 fileio.c \| reading and writing files
17966 46f95606b9ec patch 8.1.1979: code for handling file names is spread out Bram Moolenaar <Bram@vim.org> parents: 17873 diff changeset	47 filepath.c \| dealing with file names and paths
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	48 findfile.c \| search for files in 'path'
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	49 fold.c \| folding
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	50 getchar.c \| getting characters and key mapping
17389 635d7f5010b8 patch 8.1.1693: syntax coloring and highlighting is in one big file Bram Moolenaar <Bram@vim.org> parents: 17377 diff changeset	51 highlight.c \| syntax highlighting
18265 fe5afdc03bd2 patch 8.1.2127: the indent.c file is a bit big Bram Moolenaar <Bram@vim.org> parents: 18199 diff changeset	52 indent.c \| text indentation
16186 e12336bb8ced patch 8.1.1098: quickfix code duplication Bram Moolenaar <Bram@vim.org> parents: 16129 diff changeset	53 insexpand.c \| Insert mode completion
21054 b1fac55cf8a3 patch 8.2.1078: highlight and match functionality together in one file Bram Moolenaar <Bram@vim.org> parents: 20587 diff changeset	54 map.c \| mapping and abbreviations
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	55 mark.c \| marks
21054 b1fac55cf8a3 patch 8.2.1078: highlight and match functionality together in one file Bram Moolenaar <Bram@vim.org> parents: 20587 diff changeset	56 match.c \| highlight matching
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	57 mbyte.c \| multi-byte character handling
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	58 memfile.c \| storing lines for buffers in a swapfile
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	59 memline.c \| storing lines for buffers in memory
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	60 menu.c \| menus
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	61 message.c \| (error) messages
18135 1868ec23360e patch 8.1.2062: the mouse code is spread out Bram Moolenaar <Bram@vim.org> parents: 18124 diff changeset	62 mouse.c \| handling the mouse
16411 5b5c5daf57de patch 8.1.1210: support for user commands is spread out Bram Moolenaar <Bram@vim.org> parents: 16407 diff changeset	63 ops.c \| handling operators ("d", "y", "p")
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	64 option.c \| options
18100 df5778d73320 patch 8.1.2045: the option.c file is too big Bram Moolenaar <Bram@vim.org> parents: 18010 diff changeset	65 optionstr.c \| handling string options
18174 1ec6539cef68 patch 8.1.2082: some files have a weird name to fit in 8.3 characters Bram Moolenaar <Bram@vim.org> parents: 18172 diff changeset	66 popupmenu.c \| popup menu
17377 cb008de2a6ec patch 8.1.1687: the evalfunc.c file is too big Bram Moolenaar <Bram@vim.org> parents: 17370 diff changeset	67 popupwin.c \| popup window
17370 ba06a1c42274 patch 8.1.1684: profiling functionality is spread out Bram Moolenaar <Bram@vim.org> parents: 16632 diff changeset	68 profiler.c \| vim script profiler
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	69 quickfix.c \| quickfix commands (":make", ":cn")
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	70 regexp.c \| pattern matching
18164 f57481564f2c patch 8.1.2077: the ops.c file is too big Bram Moolenaar <Bram@vim.org> parents: 18135 diff changeset	71 register.c \| handling registers
17861 0a5c615cd949 patch 8.1.1927: code for dealing with script files is spread out Bram Moolenaar <Bram@vim.org> parents: 17779 diff changeset	72 scriptfile.c \| runtime directory handling and sourcing scripts
18135 1868ec23360e patch 8.1.2062: the mouse code is spread out Bram Moolenaar <Bram@vim.org> parents: 18124 diff changeset	73 screen.c \| lower level screen functions
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	74 search.c \| pattern searching
17536 e00d12c085a5 patch 8.1.1766: code for writing session file is spread out Bram Moolenaar <Bram@vim.org> parents: 17464 diff changeset	75 session.c \| sessions and views
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	76 sign.c \| signs
18172 6e53d83e021d patch 8.1.2081: the spell.c file is too big Bram Moolenaar <Bram@vim.org> parents: 18164 diff changeset	77 spell.c \| spell checking core
6e53d83e021d patch 8.1.2081: the spell.c file is too big Bram Moolenaar <Bram@vim.org> parents: 18164 diff changeset	78 spellfile.c \| spell file handling
6e53d83e021d patch 8.1.2081: the spell.c file is too big Bram Moolenaar <Bram@vim.org> parents: 18164 diff changeset	79 spellsuggest.c \| spell correction suggestions
17370 ba06a1c42274 patch 8.1.1684: profiling functionality is spread out Bram Moolenaar <Bram@vim.org> parents: 16632 diff changeset	80 syntax.c \| syntax and other highlighting
16411 5b5c5daf57de patch 8.1.1210: support for user commands is spread out Bram Moolenaar <Bram@vim.org> parents: 16407 diff changeset	81 tag.c \| tags
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	82 term.c \| terminal handling, termcap codes
17377 cb008de2a6ec patch 8.1.1687: the evalfunc.c file is too big Bram Moolenaar <Bram@vim.org> parents: 17370 diff changeset	83 testing.c \| testing: assert and test functions
20237 918245588b50 patch 8.2.0674: some source files are too big Bram Moolenaar <Bram@vim.org> parents: 20209 diff changeset	84 textformat.c \| text formatting
20209 6ca6a372fef6 patch 8.2.0660: the search.c file is a bit big Bram Moolenaar <Bram@vim.org> parents: 19920 diff changeset	85 textobject.c \| text objects
17377 cb008de2a6ec patch 8.1.1687: the evalfunc.c file is too big Bram Moolenaar <Bram@vim.org> parents: 17370 diff changeset	86 textprop.c \| text properties
19396 a961efb326e5 patch 8.2.0256: time and timer related code is spread out Bram Moolenaar <Bram@vim.org> parents: 18879 diff changeset	87 time.c \| time and timer functions
20587 f502455965c0 patch 8.2.0847: typval related code is spread out Bram Moolenaar <Bram@vim.org> parents: 20237 diff changeset	88 typval.c \| vim script type/value functions
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	89 undo.c \| undo and redo
16411 5b5c5daf57de patch 8.1.1210: support for user commands is spread out Bram Moolenaar <Bram@vim.org> parents: 16407 diff changeset	90 usercmd.c \| user defined commands
5b5c5daf57de patch 8.1.1210: support for user commands is spread out Bram Moolenaar <Bram@vim.org> parents: 16407 diff changeset	91 userfunc.c \| user defined functions
17464 3e708b5c0509 patch 8.1.1730: wrong place for mark viminfo support Bram Moolenaar <Bram@vim.org> parents: 17389 diff changeset	92 viminfo.c \| viminfo handling
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	93 window.c \| handling split windows
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	94
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	95
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	96 ## Debugging ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	97
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	98 If you have a reasonable recent version of gdb, you can use the `:Termdebug`
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	99 command to debug Vim. See `:help :Termdebug`.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	100
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	101 When something is time critical or stepping through code is a hassle, use the
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	102 channel logging to create a time-stamped log file. Add lines to the code like
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	103 this:
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	104
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	105 ch_log(NULL, "Value is now %02x", value);
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	106
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	107 After compiling and starting Vim, do:
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	108
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	109 :call ch_logfile('debuglog', 'w')
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	110
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	111 And edit `debuglog` to see what happens. The channel functions already have
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	112 `ch_log()` calls, thus you always see that in the log.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	113
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	114
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	115 ## Important Variables ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	116
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	117 The current mode is stored in `State`. The values it can have are `NORMAL`,
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	118 `INSERT`, `CMDLINE`, and a few others.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	119
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	120 The current window is `curwin`. The current buffer is `curbuf`. These point
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	121 to structures with the cursor position in the window, option values, the file
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	122 name, etc. These are defined in
16407 cbb6e28af4cb patch 8.1.1208: links to repository use wrong file name Bram Moolenaar <Bram@vim.org> parents: 16391 diff changeset	123 [`structs.h`](https://github.com/vim/vim/blob/master/src/structs.h).
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	124
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	125 All the global variables are declared in
16407 cbb6e28af4cb patch 8.1.1208: links to repository use wrong file name Bram Moolenaar <Bram@vim.org> parents: 16391 diff changeset	126 [`globals.h`](https://github.com/vim/vim/blob/master/src/globals.h).
16129 52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	127
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	128
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	129 ## The main loop ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	130
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	131 This is conveniently called `main_loop()`. It updates a few things and then
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	132 calls `normal_cmd()` to process a command. This returns when the command is
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	133 finished.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	134
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	135 The basic idea is that Vim waits for the user to type a character and
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	136 processes it until another character is needed. Thus there are several places
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	137 where Vim waits for a character to be typed. The `vgetc()` function is used
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	138 for this. It also handles mapping.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	139
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	140 Updating the screen is mostly postponed until a command or a sequence of
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	141 commands has finished. The work is done by `update_screen()`, which calls
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	142 `win_update()` for every window, which calls `win_line()` for every line.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	143 See the start of
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	144 [`screen.c`](https://github.com/vim/vim/blob/master/src/screen.c)
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	145 for more explanations.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	146
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	147
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	148 ## Command-line mode ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	149
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	150 When typing a `:`, `normal_cmd()` will call `getcmdline()` to obtain a line
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	151 with an Ex command. `getcmdline()` contains a loop that will handle each typed
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	152 character. It returns when hitting `CR` or `Esc` or some other character that
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	153 ends the command line mode.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	154
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	155
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	156 ## Ex commands ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	157
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	158 Ex commands are handled by the function `do_cmdline()`. It does the generic
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	159 parsing of the `:` command line and calls `do_one_cmd()` for each separate
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	160 command. It also takes care of while loops.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	161
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	162 `do_one_cmd()` parses the range and generic arguments and puts them in the
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	163 `exarg_t` and passes it to the function that handles the command.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	164
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	165 The `:` commands are listed in `ex_cmds.h`. The third entry of each item is
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	166 the name of the function that handles the command. The last entry are the
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	167 flags that are used for the command.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	168
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	169
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	170 ## Normal mode commands ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	171
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	172 The Normal mode commands are handled by the `normal_cmd()` function. It also
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	173 handles the optional count and an extra character for some commands. These
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	174 are passed in a `cmdarg_t` to the function that handles the command.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	175
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	176 There is a table `nv_cmds` in
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	177 [`normal.c`](https://github.com/vim/vim/blob/master/src/normal.c)
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	178 which lists the first character of every command. The second entry of each
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	179 item is the name of the function that handles the command.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	180
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	181
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	182 ## Insert mode commands ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	183
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	184 When doing an `i` or `a` command, `normal_cmd()` will call the `edit()`
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	185 function. It contains a loop that waits for the next character and handles it.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	186 It returns when leaving Insert mode.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	187
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	188
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	189 ## Options ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	190
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	191 There is a list with all option names in
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	192 [`option.c`](https://github.com/vim/vim/blob/master/src/option.c),
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	193 called `options[]`.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	194
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	195
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	196 ## The GUI ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	197
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	198 Most of the GUI code is implemented like it was a clever terminal. Typing a
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	199 character, moving a scrollbar, clicking the mouse, etc. are all translated
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	200 into events which are written in the input buffer. These are read by the
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	201 main code, just like reading from a terminal. The code for this is scattered
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	202 through [`gui.c`](https://github.com/vim/vim/blob/master/src/gui.c).
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	203 For example, `gui_send_mouse_event()` for a mouse click and `gui_menu_cb()` for
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	204 a menu action. Key hits are handled by the system-specific GUI code, which
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	205 calls `add_to_input_buf()` to send the key code.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	206
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	207 Updating the GUI window is done by writing codes in the output buffer, just
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	208 like writing to a terminal. When the buffer gets full or is flushed,
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	209 `gui_write()` will parse the codes and draw the appropriate items. Finally the
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	210 system-specific GUI code will be called to do the work.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	211
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	212
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	213 ## Debugging the GUI ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	214
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	215 Remember to prevent that gvim forks and the debugger thinks Vim has exited,
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	216 add the `-f` argument. In gdb: `run -f -g`.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	217
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	218 When stepping through display updating code, the focus event is triggered
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	219 when going from the debugger to Vim and back. To avoid this, recompile with
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	220 some code in `gui_focus_change()` disabled.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	221
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	222
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	223 ## Contributing ##
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	224
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	225 If you would like to help making Vim better, see the
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	226 [`CONTRIBUTING.md`](https://github.com/vim/vim/blob/master/CONTRIBUTING.md)
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	227 file.
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	228
52ae47071830 patch 8.1.1069: source README file doesn't look nice on github Bram Moolenaar <Bram@vim.org> parents: diff changeset	229
18879 af69c9335223 Vim 8.2 release Bram Moolenaar <Bram@vim.org> parents: 18265 diff changeset	230 This is `README.md` for version 8.2 of the Vim source code.

Mercurial > vim

annotate src/README.md @ 21417:53ff4dfe6e11 v8.2.1259