Path: csiph.com!goblin3!goblin1!goblin.stu.neva.ru!usenet.stanford.edu!not-for-mail From: Chet Ramey Newsgroups: gnu.bash.bug Subject: Re: Dashes in function names: Undocumented? 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envelope-from=chet.ramey@case.edu; helo=mpv3-2015.case.edu X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/13 10:02:27 X-ACL-Warn: Detected OS = Linux 2.4.x-2.6.x [generic] X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Mailman-Original-Message-ID: X-Mailman-Original-References: <9722.1597303965@jinx.noi.kre.to> Xref: csiph.com gnu.bash.bug:16751 On 8/13/20 3:32 AM, Robert Elz wrote: > Date: Wed, 12 Aug 2020 11:05:40 -0400 > From: Eli Schwartz > Message-ID: > > > | When in posix mode, fname must be a valid shell name and may not be the > | name of one of the POSIX special builtins. In default mode, a function > | name can be any unquoted shell word that does not contain $. > > There's no need for the posix mode test here, in posix mode a function > with the same name as a special builtin won't be found (the special builtin > is located first) but it doesn't need to be an error to define it (posix > does not require that). It's an application restriction that bash chooses to enforce: "the application shall ensure that it is a name (see XBD Name) and that it is not the name of a special built-in utility." It's a non-fatal error; some shells, like dash and ksh93, make it a fatal syntax error to define a function with the same name as a special builtin. Chet -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/