1# $NetBSD: varmod-l-name-to-value.mk,v 1.8 2023/11/19 21:47:52 rillig Exp $ 2# 3# Tests for the :L modifier, which returns the variable name as the new value. 4 5# The empty variable name leads to an empty string. 6.if ${:L} != "" 7. error 8.endif 9 10# The variable name is converted into an expression with the variable name 11# "VARNAME" and the value "VARNAME". 12.if ${VARNAME:L} != "VARNAME" 13. error 14.endif 15 16# The value of the expression can be modified afterwards. 17.if ${VARNAME:L:S,VAR,,} != "NAME" 18. error 19.endif 20 21# The name of the expression is still the same as before. Using the :L 22# modifier, it can be restored. 23# 24# Hmmm, this can be used as a double storage or a backup mechanism. 25# Probably unintended, but maybe useful. 26.if ${VARNAME:L:S,VAR,,:L} != "VARNAME" 27. error 28.endif 29 30# Between 2020-09-22 (var.c 1.527) and 2020-09-30 (var.c 1.553), there was 31# a bug in the evaluation of expressions. Indirect modifiers like 32# the below :L did not update the definedness of the enclosing expression. 33# This resulted in a wrong "Malformed conditional". 34.if ${value:${:UL}} == "" 35.endif 36 37# As of 2020-10-02, the :L modifier does not ensure that it is followed by 38# a delimiter, that is, a ':' or endc. Neither does the :P modifier. 39.if ${value:LLLLLLPL} != "value" 40. error 41.endif 42 43all: 44 @:; 45