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# $NetBSD: vardebug.mk,v 1.3 2020/08/08 14:28:46 rillig Exp $
#
# Demonstrates the debugging output for var.c.
RELEVANT= yes
VAR= added # VarAdd
VAR= overwritten # Var_Set
.undef VAR # Var_Delete (found)
.undef VAR # Var_Delete (not found)
# The variable with the empty name cannot be set at all.
${:U}= empty name # Var_Set
${:U}+= empty name # Var_Append
FROM_CMDLINE= overwritten # Var_Set (ignored)
VAR= 1
VAR+= 2
VAR+= 3
.if ${VAR:M[2]} # VarMatch
.endif
.if ${VAR:N[2]} # VarNoMatch (no debug output)
.endif
.if ${VAR:S,2,two,} # VarGetPattern
.endif
.if ${VAR:Q} # VarQuote
.endif
.if ${VAR:tu:tl:Q} # ApplyModifiers
.endif
# ApplyModifiers, "Got ..."
.if ${:Uvalue:${:UM*e}:Mvalu[e]}
.endif
.undef ${:UVAR} # Var_Delete
# When ApplyModifiers results in an error, this appears in the debug log
# as "is error", without surrounding quotes.
.if ${:Uvariable:unknown}
.endif
# XXX: The error message is "Malformed conditional", which is wrong.
# The condition is syntactically fine, it just contains an undefined variable.
#
# There is a specialized error message for "Undefined variable", but as of
# 2020-08-08, that is not covered by any unit tests. It might even be
# unreachable.
.if ${UNDEFINED}
.endif
RELEVANT= no
all:
@:
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