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From: Jilles Tjoelker <jilles@FreeBSD.org>
Date: Tue, 8 Feb 2011 23:18:06 +0000 (UTC)
To: cvs-src-old@freebsd.org
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Subject: cvs commit: src/bin/sh Makefile arith.h arith.y arith_lex.l
 arith_yacc.c arith_yacc.h arith_yylex.c
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jilles      2011-02-08 23:18:06 UTC

  FreeBSD src repository

  Modified files:
    bin/sh               Makefile arith.h 
  Added files:
    bin/sh               arith_yacc.c arith_yacc.h arith_yylex.c 
  Removed files:
    bin/sh               arith.y arith_lex.l 
  Log:
  SVN rev 218466 on 2011-02-08 23:18:06Z by jilles
  
  sh: Import arithmetic expression code from dash.
  
  New features:
  * proper lazy evaluation of || and &&
  * ?: ternary operator
  * executable is considerably smaller (8K on i386) because lex and yacc are
    no longer used
  
  Differences from dash:
  * arith_t instead of intmax_t
  * imaxdiv() not used
  * unset or null variables default to 0
  * let/exp builtin (undocumented, will probably be removed later)
  
  Obtained from:  dash
  
  Revision  Changes    Path
  1.56      +5 -5      src/bin/sh/Makefile
  1.14      +0 -2      src/bin/sh/arith.h
  1.27      +0 -366    src/bin/sh/arith.y (dead)
  1.30      +0 -143    src/bin/sh/arith_lex.l (dead)
  1.1       +376 -0    src/bin/sh/arith_yacc.c (new)
  1.1       +91 -0     src/bin/sh/arith_yacc.h (new)
  1.1       +244 -0    src/bin/sh/arith_yylex.c (new)