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Issue 29537634: Noissue - clang-format configuration file for C++
Patch Set: new version Created Sept. 15, 2017, 12:31 p.m.
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1 clang-format-eyeo
2 =================
3
4 A file containing style configuration for [`clang-format`][clang-format-docs]
5 that formats according to the
6 [Adblock Plus coding style guide][abp-coding-style-cpp] for C++.
7
8 Installation
9 ------------
10
11 When `clang-format` receives its style configuration from a file, it searches
12 for style configuration in the directory of each input file and then each parent
13 directory. Copy the format file to the parent directory of the working
14 directory. In this way it will `clang-format` will find the format file and
15 the version control system will not.
16
17 The configuration file must be named either "`.clang-format`" or
18 "`_clang-format`". At the present time there's no command line option to specify
19 the file name.
20
21 Usage
22 -----
23
24 clang-format -style=file [...]
25
26 The option "-style=file" (note that this is the word "file", not a file name)
27 says to perform a directory search for the configuration. For the rest of the
28 command line, see the `clang-format` documentation link above.
29
30 Notes
31 -----
32
33 `clang-format` is a complete reformatter; it largely ignores whitespace within
34 the input and reformats code according to its specified rules. Its treatment of
35 whitespace within comments, however, is different, within which it preserves
36 whitespace by default. If the automatically-formatted code is not acceptable,
37 interventions are available.
38
39 * Formatting can be turned on and off with explicit special comments.
40
41 ```
42 // clang-format off
43 // clang-format on
44 /* clang-format off */
45 /* clang-format on */
46 ```
47
48 * Line-end comments contain an embedded newline that `clang-format` will retain.
49 To prevent a manually-split line from unwrapping, add a `//`-comment at the end
50 of the line; it can be empty.
51
52 For more information, see the answer to this Stack Overflow question:
53 [Clang-format line breaks][SO-1]
54
55 Clang Version Support
56 ---------------------
57 The present version is for Clang 4. One option (`BreakConstructorInitializers`)
58 we're using has changed in Clang 5. If you want to use Clang 5, edit the file as
59 part of installation. Uncomment the new version and comment out the old one.
60
61
62 [clang-format-docs]: http://clang.llvm.org/docs/ClangFormat.html
63 [abp-coding-style-cpp]: https://adblockplus.org/coding-style#cpp
64 [SO-1]: https://stackoverflow.com/questions/33656800/clang-format-line-breaks#an swer-34362422
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