diff options
Diffstat (limited to 'unit-tests/varmod.mk')
| -rw-r--r-- | unit-tests/varmod.mk | 51 |
1 files changed, 47 insertions, 4 deletions
diff --git a/unit-tests/varmod.mk b/unit-tests/varmod.mk index 68bf165bf72b4..0a2a4c52c29b3 100644 --- a/unit-tests/varmod.mk +++ b/unit-tests/varmod.mk @@ -1,8 +1,51 @@ -# $NetBSD: varmod.mk,v 1.2 2020/08/16 14:25:16 rillig Exp $ +# $NetBSD: varmod.mk,v 1.3 2020/09/13 07:42:20 rillig Exp $ # # Tests for variable modifiers, such as :Q, :S,from,to or :Ufallback. -# TODO: Implementation +DOLLAR1= $$ +DOLLAR2= ${:U\$} -all: - @:; +# To get a single '$' sign in the value of a variable expression, it has to +# be written as '$$' in a literal variable value. +# +# See Var_Parse, where it calls Var_Subst. +.if ${DOLLAR1} != "\$" +. error +.endif + +# Another way to get a single '$' sign is to use the :U modifier. In the +# argument of that modifier, a '$' is escaped using the backslash instead. +# +# See Var_Parse, where it calls Var_Subst. +.if ${DOLLAR2} != "\$" +. error +.endif + +# It is also possible to use the :U modifier directly in the expression. +# +# See Var_Parse, where it calls Var_Subst. +.if ${:U\$} != "\$" +. error +.endif + +# XXX: As of 2020-09-13, it is not possible to use '$$' in a variable name +# to mean a single '$'. This contradicts the manual page, which says that +# '$' can be escaped as '$$'. +.if ${$$:L} != "" +. error +.endif + +# In lint mode, make prints helpful error messages. +# For compatibility, make does not print these error messages in normal mode. +# Should it? +.MAKEFLAGS: -dL +.if ${$$:L} != "" +. error +.endif + +# A '$' followed by nothing is an error as well. +.if ${:Uword:@word@${word}$@} != "word" +. error +.endif + +all: # nothing |