Editing Indentation style (section)

=== One True Brace ===
{{anchor|Variant: 1TBS}}
{{anchor|1TBS|OTBS|1TBF}}

The ''One True Brace Style'' <ref>{{cite book |url={{google books|id=vweTteq3OLQC|page=51|plain-url=yes}} |title=Checking C programs with Lint |first=Ian F. |last=Darwin |publisher=O'Reilly and Assosciates |location=California |page=51 |isbn=9780937175309|year=1988 }}</ref> (abbreviated 1TBS or OTBS<ref name="catb.org">{{Cite web|url=http://catb.org/jargon/html/0/one-TBS.html|title=1TBS}}</ref>) is like the K&R style, but functions are formatted like multi-statement blocks with the opening brace on the same line as the declaration, and braces are ''not'' omitted for a single-statement block.<ref name=onetruestyle>{{cite web |url=http://2ality.com/2013/01/brace-styles.html |title=Brace styles and JavaScript |date=7 January 2013 |access-date=8 November 2018}}</ref>

<syntaxhighlight lang="cpp">
bool is_negative(int x) {
    if (x < 0) {
        return true;
    } else {
        return false;
    }
}
</syntaxhighlight>

Although not required by languages such as C/C++, using braces for single-statement blocks ensures that inserting a statement does not result in control flow that disagrees with indenting, as seen for example in Apple's infamous [[Unreachable code#goto fail bug|goto fail bug]].

Cited advantages include shorter code (than K&R) since the starting brace needs no extra line, that the ending brace lines up with the statement it conceptually belongs to, and the perceived stylistic consistency of using the same brace style in both function bodies and multi-line statement blocks.<ref name="kernel.coding-style" />

Sources disagree as to the meaning of One True Brace Style. Some say that it is the variation specified here,<ref name=onetruestyle /> while others say it is "hacker jargon" for K&R.<ref name=jargon>{{cite web |url=http://www.catb.org/jargon/html/I/indent-style.html |title=The Jargon File |version=4.4.7 |date=29 December 2003 |access-date=18 August 2014}}</ref>