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* Document origins of expr & authorsSevan Janiyan2016-10-051-1/+17
| | | | | | | | | | | | http://minnie.tuhs.org/cgi-bin/utree.pl?file=PWB1/usr/man/man1/expr.1 PR: 173979 Approved by: bcr (mentor) MFC after: 5 days Differential Revision: https://reviews.freebsd.org/D8104 Notes: svn path=/head/; revision=306719
* Pet manlintBaptiste Daroussin2015-04-261-1/+1
| | | | Notes: svn path=/head/; revision=282002
* Use mdoc(7) macros for curly bracesBaptiste Daroussin2015-04-261-3/+3
| | | | Notes: svn path=/head/; revision=281998
* Minor mdoc nits.Joel Dahl2012-05-131-1/+1
| | | | Notes: svn path=/head/; revision=235400
* Whitespace cleanup:Glen Barber2012-02-251-2/+4
| | | | | | | | | | | | o Wrap sentences on to new lines o Cleanup trailing whitespace Found with: textproc/igor MFC after: 1 week X-MFC-With: r232157 Notes: svn path=/head/; revision=232158
* Fix various typos in manual pages.Glen Barber2012-02-251-3/+3
| | | | | | | | | Submitted by: amdmi3 PR: 165431 MFC after: 1 week Notes: svn path=/head/; revision=232157
* Make /bin/expr support 64bit numeric range and range checks by default,Stefan Eßer2011-07-091-25/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | again. This brings back the behaviour of expr in FreeBSD-4, which had been reverted due to an assumed incompatbility with POSIX.1 for FreeBSD-5. This issue has been discussed in the freebsd-standards list, and the consensus was, that POSIX.1 is in fact not violated by this extension, since it affects only cases of POSIX undefined behaviour (overflow of signed long). Other operating systems did upgrade their versions of expr to support 64bit range, after it had been initially brought to FreeBSD. They have used it for a decade without problems, meanwhile. The -e option is retained, but it will only select less strict checking of numeric parameters (leading white-space, leading "+" are allowed and skipped, an empty string is considered to represent 0 in numeric context.) The call of check_utility_compat() as a means of establishing backwards compatibility with FreeBSD-4 is considered obsolete, but preserved in this commit. It is expected to be removed in a later revision of this file. Reviewed by: bde, das, jilles MFC after: 2 month (those parts that do not violate POLA) Notes: svn path=/head/; revision=223881
* expr(1): Add sh(1) versions of examples, remove an incorrect example.Jilles Tjoelker2010-09-091-10/+21
| | | | | | | | | | | | | The three examples are better done using sh(1) itself these days. The example expr -- "$a" : ".*" is incorrect in the general case, as "$a" may be an operator. MFC after: 2 weeks Notes: svn path=/head/; revision=212390
* Fix markup.Ruslan Ermilov2007-03-041-5/+8
| | | | Notes: svn path=/head/; revision=167210
* Add the new standard EXIT STATUS section where appropriate.Ruslan Ermilov2005-01-161-12/+12
| | | | | | | Sort standard sections in the (documented) preferred order. Notes: svn path=/head/; revision=140353
* Removed harmful empty lines that crept in during the copyrightRuslan Ermilov2005-01-131-1/+0
| | | | | | | header update. Notes: svn path=/head/; revision=140169
* /*- or .\"- or #- to begin license clauses.Warner Losh2005-01-101-1/+2
| | | | Notes: svn path=/head/; revision=139969
* Remove BUGS section that talked about missing multibyte character support.Tim J. Robbins2004-07-121-5/+1
| | | | | | | We have support now that the regular expression routines do. Notes: svn path=/head/; revision=132029
* Document missing multibyte character handling in utilities specifiedTim J. Robbins2004-07-031-1/+5
| | | | | | | by POSIX. Notes: svn path=/head/; revision=131513
* mdoc(7) police:Ruslan Ermilov2002-11-261-1/+1
| | | | | | | | | | | Revert to using the .Tn POSIX and .Tn ANSI instead of \*[Px] and \*[Ai] strings; using these strings is unsafe in troff mode, as they include a change in a font size. Approved by: re Notes: svn path=/head/; revision=107282
* mdoc(7) police: markup fixes.Ruslan Ermilov2002-11-251-3/+3
| | | | | | | Approved by: re Notes: svn path=/head/; revision=107226
* Create a small library function, check_utility_compat(3), to determineGarrett Wollman2002-10-281-31/+32
| | | | | | | | | | | whether a named utility should behave in FreeBSD 4.x-compatible mode or in a standard mode (default standard). The configuration is done malloc(3)-style, with either an environment variable or a symlink. Update expr(1) to use this new interface. Notes: svn path=/head/; revision=106065
* mdoc(7) police: markup nits.Ruslan Ermilov2002-05-291-11/+11
| | | | Notes: svn path=/head/; revision=97464
* EXPR_COMPAT should imply -e, since there is no way to specify it otherwise,Garrett Wollman2002-05-111-1/+17
| | | | | | | and -e reflects the historic behavior of FreeBSD's expr. Notes: svn path=/head/; revision=96382
* The response to my POSIX interpretation request says that `expr'Garrett Wollman2002-05-101-16/+23
| | | | | | | | | is required to be oblivious to overflow and to use the data type `long'. (Division by zero is undefined in ISO C so it's still OK to check for it here.) Add a new `-e' flag to get the old, more useful behavior. Notes: svn path=/head/; revision=96367
* Provide an environment variabloe, EXPR_COMPAT, which disables optionGarrett Wollman2002-04-221-2/+16
| | | | | | | parsing for compatibility with old implementations. Notes: svn path=/head/; revision=95278
* Typo (if => of).Garrett Wollman2002-03-221-1/+1
| | | | Notes: svn path=/head/; revision=92984
* Add a word of caution about integer arithmetic range and overflow detection.Garrett Wollman2002-03-221-0/+6
| | | | Notes: svn path=/head/; revision=92983
* Fix a few formatting brainos and make the formatting of the EXAMPLESGarrett Wollman2002-03-221-6/+9
| | | | | | | section somewhat clearer. Notes: svn path=/head/; revision=92982
* Make expr POSIX-compliant, and fix some bugs. Specifically:Garrett Wollman2002-03-221-16/+97
| | | | | | | | | | | | | | | | - expr must conform to the Utility Syntax Guidelines, so use getopt() to eat the (non-existent) options. - Use the Standard type intmax_t for arithmetic. - If an argument cannot be *completely* converted to an integer, then it is a string. Additionally make some style cleanups near the modified lines. This utility is still not completely style-compliant. Notes: svn path=/head/; revision=92979
* Remove whitespace at EOL.Dima Dorfman2001-07-151-14/+14
| | | | Notes: svn path=/head/; revision=79754
* Prepare for mdoc(7)NG.Ruslan Ermilov2000-12-151-1/+1
| | | | Notes: svn path=/head/; revision=70056
* mdoc(7) police: use the new features of the Nm macro.Ruslan Ermilov2000-11-201-1/+1
| | | | Notes: svn path=/head/; revision=68935
* $Id$ -> $FreeBSD$Peter Wemm1999-08-271-1/+1
| | | | Notes: svn path=/head/; revision=50471
* Add cross-references to test(1) and expr(1) respectively.Joseph Koshy1998-12-181-1/+4
| | | | | | | | PR: docs/9111 Submitted by: Josh Gilliam <josh@quick.net> Notes: svn path=/head/; revision=41915
* Correct use of .Nm.Philippe Charnier1998-05-131-11/+11
| | | | Notes: svn path=/head/; revision=36011
* Revert $FreeBSD$ to $Id$Peter Wemm1997-02-221-1/+1
| | | | Notes: svn path=/head/; revision=22988
* Make the long-awaited change from $Id$ to $FreeBSD$Jordan K. Hubbard1997-01-141-1/+1
| | | | | | | | | | | This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise. Notes: svn path=/head/; revision=21673
* Fix some spelling errors.Mike Pritchard1996-01-291-5/+5
| | | | Notes: svn path=/head/; revision=13719
* Fix gross spelling and typographical errors pointed out by Keith Bostic.Jordan K. Hubbard1994-04-241-2/+2
| | | | Notes: svn path=/head/; revision=1411
* Document the new, less restrictive, behavior of the matching operator.J.T. Conklin1993-10-041-14/+15
| | | | Notes: svn path=/head/; revision=540
* Update to my latest expr (fixes bugs with comparison and matching operators)J.T. Conklin1993-07-211-0/+131
Add man page I wrote. Notes: svn path=/head/; revision=181
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