1bpkg-argument-grouping(1)   General Commands Manual  bpkg-argument-grouping(1)
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NAME

6       bpkg-argument-grouping - argument grouping facility
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SYNOPSIS

9       bpkg { options }+ argument +{ options }
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DESCRIPTION

12       For  certain commands certain options and command line variables can be
13       grouped to only apply to specific arguments. This help topic  describes
14       the argument grouping facility used for this purpose.
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16       Groups  can  be  specified before (leading) and/or after (trailing) the
17       argument they apply to. A leading group starts with '{' and  ends  with
18       '}+'  while  a  trailing  group starts with '+{' and ends with '}'. For
19       example:
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21       { --foo --bar }+ arg   # 'arg' with '--foo' '--bar'
22       arg +{ fox=1 baz=2 }   # 'arg' with 'fox=1' 'baz=2'
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24       Multiple leading and/or trailing groups can be specified for  the  same
25       argument. For example:
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27       { -f }+ { -b }+ arg +{ f=1 } +{ b=2 } # 'arg' with '-f' 'b' 'f=1' 'b=2'
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29       Note that the group applies to a single argument only. For example:
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31       { --foo }+ arg1  arg2 +{ --bar }  # 'arg1' with '--foo' and
32                                         # 'arg2' with '--bar'
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34       The  group  separators  ('{',  '}+', etc) must be separate command line
35       arguments. In particular, they must not be adjacent either to the argu‐
36       ments  inside  the  group  nor  to the argument they apply to. All such
37       cases will be treated as ordinary arguments. For example:
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39       {--foo}+ arg   # '{--foo}+' ...
40       arg+{ --foo }  # 'arg+{' ...
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42       If one of the group separators needs to be  specified  as  an  argument
43       verbatim, then it must be escaped with '\'. For example:
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45       }             # error: unexpected group separator
46       }x            # '}x'
47       \}            # '}'
48       { \}+ }+ arg  # 'arg' with '}+'
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BUGS

51       Send bug reports to the users@build2.org mailing list.
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54       Copyright (c) 2014-2019 Code Synthesis Ltd
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56       Permission  is  granted to copy, distribute and/or modify this document
57       under the terms of the MIT License.
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61bpkg 0.12.0                      November 2019       bpkg-argument-grouping(1)
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