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# $NetBSD: modts.mk,v 1.8 2020/11/03 18:42:33 rillig Exp $
LIST= one two three four five six
FU_mod-ts= a / b / cool
AAA= a a a
B.aaa= Baaa
all: mod-ts mod-ts-space
# Use print or printf iff they are builtin.
# XXX note that this causes problems, when make decides
# there is no need to use a shell, so avoid where possible.
.if ${(type print) 2> /dev/null || echo:L:sh:Mbuiltin} != ""
PRINT= print -r --
.elif ${(type printf) 2> /dev/null || echo:L:sh:Mbuiltin} != ""
PRINT= printf '%s\n'
.else
PRINT= echo
.endif
mod-ts:
@${PRINT} 'LIST:tx="${LIST:tx}"'
@${PRINT} 'LIST:ts/x:tu="${LIST:ts\X:tu}"'
@${PRINT} 'FU_$@="${FU_${@:ts}:ts}"'
@${PRINT} 'FU_$@:ts:T="${FU_${@:ts}:ts:T}" == cool?'
@${PRINT} 'B.$${AAA:ts}="${B.${AAA:ts}}" == Baaa?'
mod-ts-space:
# After the :ts modifier, the whole string is interpreted as a single
# word since all spaces have been replaced with x.
@${PRINT} ':ts :S => '${aa bb aa bb aa bb:L:tsx:S,b,B,:Q}
# The :ts modifier also applies to word separators that are added
# afterwards.
@${PRINT} ':ts :S space => '${a ababa c:L:tsx:S,b, ,g:Q}
@${PRINT} ':ts :S space :M => '${a ababa c:L:tsx:S,b, ,g:M*:Q}
# Not all modifiers behave this way though. Some of them always use
# a space as word separator instead of the :ts separator.
# This seems like an oversight during implementation.
@${PRINT} ':ts :S => '${a ababa c:L:tsx:S,b, ,g:Q}
@${PRINT} ':ts :S :@ => '${a ababa c:L:tsx:S,b, ,g:@v@${v}@:Q}
# A final :M* modifier applies the :ts separator again, though.
@${PRINT} ':ts :S :@ :M => '${a ababa c:L:tsx:S,b, ,g:@v@${v}@:M*:Q}
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