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Diffstat (limited to 'Documentation/CodingGuidelines')
| -rw-r--r-- | Documentation/CodingGuidelines | 56 |
1 files changed, 48 insertions, 8 deletions
diff --git a/Documentation/CodingGuidelines b/Documentation/CodingGuidelines index c6e536f..a4191aa 100644 --- a/Documentation/CodingGuidelines +++ b/Documentation/CodingGuidelines @@ -171,6 +171,11 @@ For C programs: - We try to keep to at most 80 characters per line. + - As a Git developer we assume you have a reasonably modern compiler + and we recommend you to enable the DEVELOPER makefile knob to + ensure your patch is clear of all compiler warnings we care about, + by e.g. "echo DEVELOPER=1 >>config.mak". + - We try to support a wide range of C compilers to compile Git with, including old ones. That means that you should not use C99 initializers, even if a lot of compilers grok it. @@ -201,11 +206,38 @@ For C programs: x = 1; } - is frowned upon. A gray area is when the statement extends - over a few lines, and/or you have a lengthy comment atop of - it. Also, like in the Linux kernel, if there is a long list - of "else if" statements, it can make sense to add braces to - single line blocks. + is frowned upon. But there are a few exceptions: + + - When the statement extends over a few lines (e.g., a while loop + with an embedded conditional, or a comment). E.g.: + + while (foo) { + if (x) + one(); + else + two(); + } + + if (foo) { + /* + * This one requires some explanation, + * so we're better off with braces to make + * it obvious that the indentation is correct. + */ + doit(); + } + + - When there are multiple arms to a conditional and some of them + require braces, enclose even a single line block in braces for + consistency. E.g.: + + if (foo) { + doit(); + } else { + one(); + two(); + three(); + } - We try to avoid assignments in the condition of an "if" statement. @@ -521,12 +553,20 @@ Writing Documentation: modifying paragraphs or option/command explanations that contain options or commands: - Literal examples (e.g. use of command-line options, command names, and - configuration variables) are typeset in monospace, and if you can use - `backticks around word phrases`, do so. + Literal examples (e.g. use of command-line options, command names, + branch names, configuration and environment variables) must be + typeset in monospace (i.e. wrapped with backticks): `--pretty=oneline` `git rev-list` `remote.pushDefault` + `GIT_DIR` + `HEAD` + + An environment variable must be prefixed with "$" only when referring to its + value and not when referring to the variable itself, in this case there is + nothing to add except the backticks: + `GIT_DIR` is specified + `$GIT_DIR/hooks/pre-receive` Word phrases enclosed in `backtick characters` are rendered literally and will not be further expanded. The use of `backticks` to achieve the |