29 lines
696 B
Makefile
29 lines
696 B
Makefile
# $NetBSD: varmod-exclam-shell.mk,v 1.2 2020/08/16 12:48:55 rillig Exp $
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#
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# Tests for the :!cmd! variable modifier.
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.if ${:!echo hello | tr 'l' 'l'!} != "hello"
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.warning unexpected
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.endif
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# The output is truncated at the first null byte.
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# Cmd_Exec returns only a string pointer without length information.
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.if ${:!echo hello | tr 'l' '\0'!} != "he"
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.warning unexpected
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.endif
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.if ${:!echo!} != ""
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.warning A newline at the end of the output must be stripped.
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.endif
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.if ${:!echo;echo!} != " "
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.warning Only a single newline at the end of the output is stripped.
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.endif
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.if ${:!echo;echo;echo;echo!} != " "
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.warning Other newlines in the output are converted to spaces.
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.endif
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all:
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@:;
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