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# $NetBSD: vardebug.mk,v 1.10 2024/04/20 10:18:55 rillig Exp $
#
# Demonstrates the debugging output for var.c.
.MAKEFLAGS: -dv FROM_CMDLINE=
# expect: Global: VAR = added
VAR= added # VarAdd
# expect: Global: VAR = overwritten
VAR= overwritten # Var_Set
# expect: Global: delete VAR
.undef VAR
# expect: Global: ignoring delete 'VAR' as it is not found
.undef VAR
# The variable with the empty name cannot be set at all.
# expect: Global: ignoring ' = empty name' as the variable name '${:U}' expands to empty
${:U}= empty name # Var_Set
# expect: Global: ignoring ' += empty name' as the variable name '${:U}' expands to empty
${:U}+= empty name # Var_Append
FROM_CMDLINE= overwritten # Var_Set (ignored)
# expect: Global: VAR = 1
VAR= 1
# expect: Global: VAR = 1 2
VAR+= 2
# expect: Global: VAR = 1 2 3
VAR+= 3
# expect: Pattern for ':M' is "[2]"
# expect: Result of ${VAR:M[2]} is "2"
.if ${VAR:M[2]} # ModifyWord_Match
.endif
# expect: Pattern for ':N' is "[2]"
# expect: Result of ${VAR:N[2]} is "1 3"
.if ${VAR:N[2]} # ModifyWord_NoMatch
.endif
.if ${VAR:S,2,two,} # ParseModifierPart
.endif
# expect: Result of ${VAR:Q} is "1\ 2\ 3"
.if ${VAR:Q} # VarQuote
.endif
.if ${VAR:tu:tl:Q} # ApplyModifiers
.endif
# ApplyModifiers, "Got ..."
# expect: Result of ${:Mvalu[e]} is "value" (eval-defined, defined)
.if ${:Uvalue:${:UM*e}:Mvalu[e]}
.endif
# expect: Global: delete VAR
.undef ${:UVAR} # Var_Delete
# When ApplyModifiers results in an error, this appears in the debug log
# as "is error", without surrounding quotes.
# expect: Result of ${:unknown} is error (eval-defined, defined)
# expect+2: Malformed conditional (${:Uvariable:unknown})
# expect+1: while evaluating "${:Uvariable:unknown}": Unknown modifier "unknown"
.if ${:Uvariable:unknown}
.endif
# XXX: The error message is "Malformed conditional", which is wrong.
# The condition is syntactically fine, it just contains an undefined variable.
#
# There is a specialized error message for "Undefined variable", but as of
# 2020-08-08, that is not covered by any unit tests. It might even be
# unreachable.
# expect+1: Malformed conditional (${UNDEFINED})
.if ${UNDEFINED}
.endif
# By default, .SHELL is not defined and thus can be set. As soon as it is
# accessed, it is initialized in the command line scope (during VarFind),
# where it is set to read-only. Assigning to it is ignored.
# expect: Command: ignoring '.SHELL = overwritten' as it is read-only
.MAKEFLAGS: .SHELL=overwritten
.MAKEFLAGS: -d0
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