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Revision 9041

Added by Aaron Marcuse-Kubitza over 11 years ago

lib/sh/util.sh: let (): renamed to let! so that let can still be used to evaluate whether a numeric value is 0 (yes, an ! is allowed at the end of a command name)

View differences:

lib/sh/util.sh
96 96 

  		




  97
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#### integers


  		




  98
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let () { builtin let "$@" || true; }


  		




  
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let! () { let "$@" || true; } # always returns true; safe to use for setting


  		




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	# "If the last ARG evaluates to 0, let returns 1" (`help let`)


  		




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bool2int () { try test -z "$1"; echo "$e"; } # empty->0; non-empty->1


  		




  ......




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# usage: in func:      inc_log_level; ...


  		




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#        outside func: inc_log_level; ...; dec_log_level


  		




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alias inc_log_level='declare verbosity="$verbosity" PS4="$log_indent$PS4"


  		




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let verbosity--'


  		




  
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let! verbosity--'


  		




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alias dec_log_level='declare verbosity="$verbosity" PS4="${PS4#$log_indent}"


  		




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let verbosity++'


  		




  
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let! verbosity++'


  		




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fi # load new aliases


  		




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if self_being_included; then


  		












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