1# $NetBSD: varmod-exclam-shell.mk,v 1.2 2020/08/16 12:48:55 rillig Exp $ 2# 3# Tests for the :!cmd! variable modifier. 4 5.if ${:!echo hello | tr 'l' 'l'!} != "hello" 6.warning unexpected 7.endif 8 9# The output is truncated at the first null byte. 10# Cmd_Exec returns only a string pointer without length information. 11.if ${:!echo hello | tr 'l' '\0'!} != "he" 12.warning unexpected 13.endif 14 15.if ${:!echo!} != "" 16.warning A newline at the end of the output must be stripped. 17.endif 18 19.if ${:!echo;echo!} != " " 20.warning Only a single newline at the end of the output is stripped. 21.endif 22 23.if ${:!echo;echo;echo;echo!} != " " 24.warning Other newlines in the output are converted to spaces. 25.endif 26 27all: 28 @:; 29