| @@ -1,12 +1,20 @@ | | | @@ -1,12 +1,20 @@ |
| 1 | # $NetBSD: varmod-remember.mk,v 1.3 2020/08/23 15:18:43 rillig Exp $ | | 1 | # $NetBSD: varmod-remember.mk,v 1.4 2021/03/14 17:07:11 rillig Exp $ |
| 2 | # | | 2 | # |
| 3 | # Tests for the :_ modifier, which saves the current variable value | | 3 | # Tests for the :_ modifier, which saves the current variable value |
| 4 | # in the _ variable or another, to be used later again. | | 4 | # in the _ variable or another, to be used later again. |
| 5 | | | 5 | |
| | | 6 | .if ${1 2 3:L:_:@var@${_}@} != "1 2 3 1 2 3 1 2 3" |
| | | 7 | . error |
| | | 8 | .endif |
| | | 9 | |
| 6 | # In the parameterized form, having the variable name on the right side of | | 10 | # In the parameterized form, having the variable name on the right side of |
| 7 | # the = assignment operator is confusing. In almost all other situations | | 11 | # the = assignment operator is confusing. In almost all other situations |
| 8 | # the variable name is on the left-hand side of the = operator. Luckily | | 12 | # the variable name is on the left-hand side of the = operator. Luckily |
| 9 | # this modifier is only rarely needed. | | 13 | # this modifier is only rarely needed. |
| | | 14 | .if ${1 2 3:L:@var@${var:_=SAVED:}@} != "1 2 3" |
| | | 15 | . error |
| | | 16 | .elif ${SAVED} != "3" |
| | | 17 | . error |
| | | 18 | .endif |
| | | 19 | |
| 10 | all: | | 20 | all: |
| 11 | @echo ${1 2 3:L:_:@var@${_}@} | | | |
| 12 | @echo ${1 2 3:L:@var@${var:_=SAVED:}@}, SAVED=${SAVED} | | | |