Mercurial > vim
annotate src/README.md @ 34627:5071d4c3ff2e v9.1.0202
patch 9.1.0202: leaking memory in add_user() on failure
Commit: https://github.com/vim/vim/commit/7a2f217988afa1c35b9c093a9d3477198ea250b9
Author: Christian Brabandt <cb@256bit.org>
Date: Sun Mar 24 09:50:03 2024 +0100
patch 9.1.0202: leaking memory in add_user() on failure
Problem: leaking memory in add_user() (LuMingYinDetect)
Solution: free user_copy pointer instead of the user ptr
add_user() is called with a user pointer and the user pointer comes
from these functions:
- return value from the getpwent() function (Unix).
- return value from the getpwnam() function (Unix).
- return value from the NetUserEnum() function (MS Windows).
For the first 2 callers, the man page for those functions directly says,
one should not free the returned pointer (since it comes from static
memory).
For the third caller (on MS Windows), the returned buffer is already
freed directly after calling the add_user() function in
NetApiBufferFree(), so this would lead to a double free().
This all indicates, the user ptr is wrongly freed in the add_user()
function and the intention was to free the user_copy pointer instead in
case of an error.
So let's just use that now.
fixes: #14250
closes: #14260
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Sun, 24 Mar 2024 10:00:09 +0100 |
parents | 4635e43f2c6f |
children | 500731fe8161 |
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 --------------- | ----------- |
25529
bb1097899693
patch 8.2.3301: memory allocation functions don't have their own place
Bram Moolenaar <Bram@vim.org>
parents:
25206
diff
changeset
|
26 alloc.c | memory management |
17744
4a3dca734d36
patch 8.1.1869: code for the argument list is spread out
Bram Moolenaar <Bram@vim.org>
parents:
17652
diff
changeset
|
27 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
|
28 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
|
29 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
|
30 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
|
31 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
|
32 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
|
33 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
|
34 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
|
35 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
|
36 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
|
37 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
|
38 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
|
39 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
|
40 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
|
41 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
|
42 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
|
43 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
|
44 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
|
45 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
|
46 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
|
47 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
|
48 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
|
49 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
|
50 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
|
51 getchar.c | getting characters and key mapping |
21423
5db63c2c6929
patch 8.2.1262: src/ex_cmds.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
21054
diff
changeset
|
52 help.c | vim help related functions |
17389
635d7f5010b8
patch 8.1.1693: syntax coloring and highlighting is in one big file
Bram Moolenaar <Bram@vim.org>
parents:
17377
diff
changeset
|
53 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
|
54 indent.c | text indentation |
16186
e12336bb8ced
patch 8.1.1098: quickfix code duplication
Bram Moolenaar <Bram@vim.org>
parents:
16129
diff
changeset
|
55 insexpand.c | Insert mode completion |
21437
b32b67a108f2
patch 8.2.1269: language and locale code spread out
Bram Moolenaar <Bram@vim.org>
parents:
21423
diff
changeset
|
56 locale.c | locale/language handling |
21054
b1fac55cf8a3
patch 8.2.1078: highlight and match functionality together in one file
Bram Moolenaar <Bram@vim.org>
parents:
20587
diff
changeset
|
57 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
|
58 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
|
59 match.c | highlight matching |
24780
7bc92a651472
patch 8.2.2928: the evalfunc.c file is too big
Bram Moolenaar <Bram@vim.org>
parents:
21437
diff
changeset
|
60 float.c | floating point functions |
16129
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
61 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
|
62 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
|
63 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
|
64 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
|
65 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
|
66 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
|
67 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
|
68 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
|
69 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
|
70 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
|
71 popupwin.c | popup window |
17370
ba06a1c42274
patch 8.1.1684: profiling functionality is spread out
Bram Moolenaar <Bram@vim.org>
parents:
16632
diff
changeset
|
72 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
|
73 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
|
74 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
|
75 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
|
76 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
|
77 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
|
78 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
|
79 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
|
80 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
|
81 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
|
82 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
|
83 spellsuggest.c | spell correction suggestions |
25206
dc66d0284518
patch 8.2.3139: functions for string manipulation are spread out
Bram Moolenaar <Bram@vim.org>
parents:
24780
diff
changeset
|
84 strings.c | string manipulation functions |
17370
ba06a1c42274
patch 8.1.1684: profiling functionality is spread out
Bram Moolenaar <Bram@vim.org>
parents:
16632
diff
changeset
|
85 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
|
86 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
|
87 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
|
88 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
|
89 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
|
90 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
|
91 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
|
92 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
|
93 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
|
94 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
|
95 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
|
96 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
|
97 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
|
98 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
|
99 |
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 ## Debugging ## |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
102 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
103 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
|
104 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
|
105 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
106 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
|
107 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
|
108 this: |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
109 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
110 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
|
111 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
112 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
|
113 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
114 :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
|
115 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
116 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
|
117 `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
|
118 |
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 ## Important Variables ## |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
121 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
122 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
|
123 `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
|
124 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
125 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
|
126 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
|
127 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
|
128 [`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
|
129 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
130 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
|
131 [`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
|
132 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
133 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
134 ## 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
|
135 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
136 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
|
137 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
|
138 finished. |
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 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
|
141 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
|
142 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
|
143 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
|
144 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
145 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
|
146 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
|
147 `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
|
148 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
|
149 [`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
|
150 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
|
151 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
152 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
153 ## 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 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
|
156 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
|
157 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
|
158 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
|
159 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
160 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
161 ## Ex commands ## |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
162 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
163 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
|
164 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
|
165 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
|
166 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
167 `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
|
168 `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
|
169 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
170 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
|
171 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
|
172 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
|
173 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
174 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
175 ## 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
|
176 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
177 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
|
178 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
|
179 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
|
180 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
181 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
|
182 [`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
|
183 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
|
184 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
|
185 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
186 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
187 ## 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
|
188 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
189 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
|
190 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
|
191 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
|
192 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
193 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
194 ## Options ## |
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 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
|
197 [`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
|
198 called `options[]`. |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
199 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
200 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
201 ## The GUI ## |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
202 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
203 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
|
204 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
|
205 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
|
206 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
|
207 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
|
208 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
|
209 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
|
210 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
|
211 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
212 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
|
213 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
|
214 `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
|
215 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
|
216 |
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 ## 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
|
219 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
220 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
|
221 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
|
222 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
223 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
|
224 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
|
225 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
|
226 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
227 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
228 ## Contributing ## |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
229 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
230 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
|
231 [`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
|
232 file. |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
233 |
52ae47071830
patch 8.1.1069: source README file doesn't look nice on github
Bram Moolenaar <Bram@vim.org>
parents:
diff
changeset
|
234 |
34057
4635e43f2c6f
patch 9.1.0000: Vim 9.1 release
Christian Brabandt <cb@256bit.org>
parents:
29314
diff
changeset
|
235 This is `README.md` for version 9.1 of the Vim source code. |