LIST= one two three LIST+= four five six FU_mod-ts = a / b / cool AAA= a a a B.aaa= Baaa all: mod-ts # 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 ${type printf 2> /dev/null || echo:L:sh:Mbuiltin} != "" PRINT= printf '%s\n' .else PRINT= echo .endif mod-ts: @echo 'LIST="${LIST}"' @echo 'LIST:ts,="${LIST:ts,}"' @echo 'LIST:ts/:tu="${LIST:ts/:tu}"' @echo 'LIST:ts::tu="${LIST:ts::tu}"' @echo 'LIST:ts:tu="${LIST:ts:tu}"' @echo 'LIST:tu:ts/="${LIST:tu:ts/}"' @echo 'LIST:ts:="${LIST:ts:}"' @echo 'LIST:ts="${LIST:ts}"' @echo 'LIST:ts:S/two/2/="${LIST:ts:S/two/2/}"' @echo 'LIST:S/two/2/:ts="${LIST:S/two/2/:ts}"' @echo 'LIST:ts/:S/two/2/="${LIST:ts/:S/two/2/}"' @echo "Pretend the '/' in '/n' etc. below are back-slashes." @${PRINT} 'LIST:ts/n="${LIST:ts\n}"' @${PRINT} 'LIST:ts/t="${LIST:ts\t}"' @${PRINT} 'LIST:ts/012:tu="${LIST:ts\012:tu}"' @${PRINT} 'LIST:ts/xa:tu="${LIST:ts\xa:tu}"' @${PRINT} 'LIST:tx="${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?'