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    revision 983 by niro, Fri Apr 24 18:33:46 2009 UTC revision 984 by niro, Sun May 30 11:32:42 2010 UTC
    # Line 15  choice Line 15  choice
    15  config FEATURE_SH_IS_ASH  config FEATURE_SH_IS_ASH
    16   select ASH   select ASH
    17   bool "ash"   bool "ash"
    18     depends on !NOMMU
    19    
    20  config FEATURE_SH_IS_HUSH  config FEATURE_SH_IS_HUSH
    21   select HUSH   select HUSH
    # Line 24  config FEATURE_SH_IS_HUSH Line 25  config FEATURE_SH_IS_HUSH
    25  #### select LASH  #### select LASH
    26  #### bool "lash"  #### bool "lash"
    27    
    28  config FEATURE_SH_IS_MSH  ####config FEATURE_SH_IS_MSH
    29   select MSH  #### select MSH
    30   bool "msh"  #### bool "msh"
    31    
    32  config FEATURE_SH_IS_NONE  config FEATURE_SH_IS_NONE
    33   bool "none"   bool "none"
    # Line 36  endchoice Line 37  endchoice
    37  config ASH  config ASH
    38   bool "ash"   bool "ash"
    39   default n   default n
    40     depends on !NOMMU
    41   help   help
    42    Tha 'ash' shell adds about 60k in the default configuration and is    Tha 'ash' shell adds about 60k in the default configuration and is
    43    the most complete and most pedantically correct shell included with    the most complete and most pedantically correct shell included with
    # Line 43  config ASH Line 45  config ASH
    45    shell (by Herbert Xu), which was created by porting the 'ash' shell    shell (by Herbert Xu), which was created by porting the 'ash' shell
    46    (written by Kenneth Almquist) from NetBSD.    (written by Kenneth Almquist) from NetBSD.
    47    
     comment "Ash Shell Options"  
      depends on ASH  
       
    48  config ASH_BASH_COMPAT  config ASH_BASH_COMPAT
    49   bool "bash-compatible extensions"   bool "bash-compatible extensions"
    50   default y   default y
    # Line 60  config ASH_JOB_CONTROL Line 59  config ASH_JOB_CONTROL
    59   help   help
    60    Enable job control in the ash shell.    Enable job control in the ash shell.
    61    
     config ASH_READ_NCHARS  
      bool "'read -n N' and 'read -s' support"  
      default n  
      depends on ASH  
      help  
       'read -n N' will return a value after N characters have been read.  
       'read -s' will read without echoing the user's input.  
       
     config ASH_READ_TIMEOUT  
      bool "'read -t S' support"  
      default n  
      depends on ASH  
      help  
       'read -t S' will return a value after S seconds have passed.  
       This implementation will allow fractional seconds, expressed  
       as a decimal fraction, e.g. 'read -t 2.5 foo'.  
       
    62  config ASH_ALIAS  config ASH_ALIAS
    63   bool "alias support"   bool "alias support"
    64   default y   default y
    # Line 84  config ASH_ALIAS Line 66  config ASH_ALIAS
    66   help   help
    67    Enable alias support in the ash shell.    Enable alias support in the ash shell.
    68    
     config ASH_MATH_SUPPORT  
      bool "Posix math support"  
      default y  
      depends on ASH  
      help  
       Enable math support in the ash shell.  
       
     config ASH_MATH_SUPPORT_64  
      bool "Extend Posix math support to 64 bit"  
      default n  
      depends on ASH_MATH_SUPPORT  
      help  
       Enable 64-bit math support in the ash shell. This will make  
       the shell slightly larger, but will allow computation with very  
       large numbers.  
       
    69  config ASH_GETOPTS  config ASH_GETOPTS
    70   bool "Builtin getopt to parse positional parameters"   bool "Builtin getopt to parse positional parameters"
    71   default n   default n
    # Line 152  config ASH_OPTIMIZE_FOR_SIZE Line 118  config ASH_OPTIMIZE_FOR_SIZE
    118    Compile ash for reduced size at the price of speed.    Compile ash for reduced size at the price of speed.
    119    
    120  config ASH_RANDOM_SUPPORT  config ASH_RANDOM_SUPPORT
    121   bool "Pseudorandom generator and variable $RANDOM"   bool "Pseudorandom generator and $RANDOM variable"
    122   default n   default n
    123   depends on ASH   depends on ASH
    124   help   help
    125    Enable pseudorandom generator and dynamic variable "$RANDOM".    Enable pseudorandom generator and dynamic variable "$RANDOM".
    126    Each read of "$RANDOM" will generate a new pseudorandom value.    Each read of "$RANDOM" will generate a new pseudorandom value.
    127    You can reset the generator by using a specified start value.    You can reset the generator by using a specified start value.
    128    After "unset RANDOM" then generator will switch off and this    After "unset RANDOM" the generator will switch off and this
    129    variable will no longer have special treatment.    variable will no longer have special treatment.
    130    
    131  config ASH_EXPAND_PRMT  config ASH_EXPAND_PRMT
    # Line 167  config ASH_EXPAND_PRMT Line 133  config ASH_EXPAND_PRMT
    133   default n   default n
    134   depends on ASH   depends on ASH
    135   help   help
    136    "PS#" may be contain volatile content, such as backquote commands.    "PS#" may contain volatile content, such as backquote commands.
    137    This option recreates the prompt string from the environment    This option recreates the prompt string from the environment
    138    variable each time it is displayed.    variable each time it is displayed.
    139    
    # Line 175  config HUSH Line 141  config HUSH
    141   bool "hush"   bool "hush"
    142   default n   default n
    143   help   help
    144    hush is a very small shell (just 18k) and it has fairly complete    hush is a small shell (22k). It handles the normal flow control
    145    Bourne shell grammar. It even handles all the normal flow control    constructs such as if/then/elif/else/fi, for/in/do/done, while loops,
    146    options such as if/then/elif/else/fi, for/in/do/done, while loops,    case/esac. Redirections, here documents, $((arithmetic))
    147    case/esac.    and functions are supported.
    148    
    149    It uses only vfork, so it can be used on uClinux systems.    It will compile and work on no-mmu systems.
    150    
    151    It does not handle select, functions, here documents ( <<    It does not handle select, aliases, brace expansion,
    152    word ), arithmetic expansion, aliases, brace expansion, tilde    tilde expansion, &>file and >&file redirection of stdout+stderr.
    153    expansion, &> and >& redirection of stdout+stderr, etc.  
    154    config HUSH_BASH_COMPAT
    155     bool "bash-compatible extensions"
    156     default y
    157     depends on HUSH
    158     help
    159      Enable bash-compatible extensions.
    160    
    161  config HUSH_HELP  config HUSH_HELP
    162   bool "help builtin"   bool "help builtin"
    # Line 200  config HUSH_INTERACTIVE Line 172  config HUSH_INTERACTIVE
    172   help   help
    173    Enable interactive mode (prompt and command editing).    Enable interactive mode (prompt and command editing).
    174    Without this, hush simply reads and executes commands    Without this, hush simply reads and executes commands
    175    from stdin just like a shell script from the file.    from stdin just like a shell script from a file.
    176    No prompt, no PS1/PS2 magic shell variables.    No prompt, no PS1/PS2 magic shell variables.
    177    
    178  config HUSH_JOB  config HUSH_JOB
    # Line 234  config HUSH_LOOPS Line 206  config HUSH_LOOPS
    206   depends on HUSH   depends on HUSH
    207   help   help
    208    Enable for, while and until loops in hush.    Enable for, while and until loops in hush.
       As of 2008-07, break and continue statements are not supported.  
    209    
    210  config HUSH_CASE  config HUSH_CASE
    211   bool "Support case ... esac statement"   bool "Support case ... esac statement"
    # Line 243  config HUSH_CASE Line 214  config HUSH_CASE
    214   help   help
    215    Enable case ... esac statement in hush. +400 bytes.    Enable case ... esac statement in hush. +400 bytes.
    216    
    217    config HUSH_FUNCTIONS
    218     bool "Support funcname() { commands; } syntax"
    219     default n
    220     depends on HUSH
    221     help
    222      Enable support for shell functions in hush. +800 bytes.
    223    
    224    config HUSH_LOCAL
    225     bool "Support local builtin"
    226     default n
    227     depends on HUSH_FUNCTIONS
    228     help
    229      Enable support for local variables in functions.
    230    
    231    config HUSH_EXPORT_N
    232     bool "Support export '-n' option"
    233     default n
    234     depends on HUSH
    235     help
    236      Enable support for export '-n' option in hush. It is a bash extension.
    237    
    238    config HUSH_RANDOM_SUPPORT
    239     bool "Pseudorandom generator and $RANDOM variable"
    240     default n
    241     depends on HUSH
    242     help
    243      Enable pseudorandom generator and dynamic variable "$RANDOM".
    244      Each read of "$RANDOM" will generate a new pseudorandom value.
    245    
    246  config LASH  config LASH
    247   bool "lash"   bool "lash (deprecated: aliased to hush)"
    248   default n   default n
    249   select HUSH   select HUSH
    250   help   help
    251    lash is deprecated and will be removed, please migrate to hush.    lash is deprecated and will be removed, please migrate to hush.
    252    
    253  config MSH  config MSH
    254   bool "msh"   bool "msh (deprecated: please use hush)"
    255   default n   default n
    256     select HUSH
    257     help
    258      msh is deprecated and will be removed, please migrate to hush.
    259      If there is a feature msh has but hush does not, please let us know.
    260    
    261    #  The minix shell (adds just 30k) is quite complete and handles things
    262    #  like for/do/done, case/esac and all the things you expect a Bourne
    263    #  shell to do. It is not always pedantically correct about Bourne
    264    #  shell grammar (try running the shell testscript "tests/sh.testcases"
    265    #  on it and compare vs bash) but for most things it works quite well.
    266    #  It uses only vfork, so it can be used on uClinux systems.
    267    
    268    
    269    config SH_MATH_SUPPORT
    270     bool "POSIX math support"
    271     default y
    272     depends on ASH || HUSH
    273   help   help
    274    The minix shell (adds just 30k) is quite complete and handles things    Enable math support in the shell via $((...)) syntax.
       like for/do/done, case/esac and all the things you expect a Bourne  
       shell to do. It is not always pedantically correct about Bourne  
       shell grammar (try running the shell testscript "tests/sh.testcases"  
       on it and compare vs bash) but for most things it works quite well.  
       It uses only vfork, so it can be used on uClinux systems.  
    275    
    276  comment "Bourne Shell Options"  config SH_MATH_SUPPORT_64
    277   depends on MSH || LASH || HUSH || ASH   bool "Extend POSIX math support to 64 bit"
    278     default n
    279     depends on SH_MATH_SUPPORT
    280     help
    281      Enable 64-bit math support in the shell. This will make the shell
    282      slightly larger, but will allow computation with very large numbers.
    283      This is not in POSIX, so do not rely on this in portable code.
    284    
    285  config FEATURE_SH_EXTRA_QUIET  config FEATURE_SH_EXTRA_QUIET
    286   bool "Hide message on interactive shell startup"   bool "Hide message on interactive shell startup"
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