Global: ignoring delete 'FROM_CMDLINE' as it is not found
Command: FROM_CMDLINE = # (empty)
Global: .MAKEOVERRIDES =  FROM_CMDLINE
Global: VAR = added
Global: VAR = overwritten
Global: delete VAR
Global: ignoring delete 'VAR' as it is not found
Global: ignoring ' = empty name' as the variable name '${:U}' expands to empty
Global: ignoring ' += empty name' as the variable name '${:U}' expands to empty
Global: ignoring 'FROM_CMDLINE = overwritten' due to a command line variable of the same name
Global: VAR = 1
Global: VAR = 1 2
Global: VAR = 1 2 3
Var_Parse: ${VAR:M[2]} (eval-defined)
Evaluating modifier ${VAR:M...} on value "1 2 3"
Pattern for ':M' is "[2]"
ModifyWords: split "1 2 3" into 3 words
Result of ${VAR:M[2]} is "2"
Var_Parse: ${VAR:N[2]} (eval-defined)
Evaluating modifier ${VAR:N...} on value "1 2 3"
Pattern for ':N' is "[2]"
ModifyWords: split "1 2 3" into 3 words
Result of ${VAR:N[2]} is "1 3"
Var_Parse: ${VAR:S,2,two,} (eval-defined)
Evaluating modifier ${VAR:S...} on value "1 2 3"
Modifier part: "2"
Modifier part: "two"
ModifyWords: split "1 2 3" into 3 words
Result of ${VAR:S,2,two,} is "1 two 3"
Var_Parse: ${VAR:Q} (eval-defined)
Evaluating modifier ${VAR:Q} on value "1 2 3"
Result of ${VAR:Q} is "1\ 2\ 3"
Var_Parse: ${VAR:tu:tl:Q} (eval-defined)
Evaluating modifier ${VAR:t...} on value "1 2 3"
Result of ${VAR:tu} is "1 2 3"
Evaluating modifier ${VAR:t...} on value "1 2 3"
Result of ${VAR:tl} is "1 2 3"
Evaluating modifier ${VAR:Q} on value "1 2 3"
Result of ${VAR:Q} is "1\ 2\ 3"
Var_Parse: ${:Uvalue:${:UM*e}:Mvalu[e]} (eval-defined)
Evaluating modifier ${:U...} on value "" (eval-defined, undefined)
Result of ${:Uvalue} is "value" (eval-defined, defined)
Indirect modifier "M*e" from "${:UM*e}"
Evaluating modifier ${:M...} on value "value" (eval-defined, defined)
Pattern for ':M' is "*e"
ModifyWords: split "value" into 1 word
Result of ${:M*e} is "value" (eval-defined, defined)
Evaluating modifier ${:M...} on value "value" (eval-defined, defined)
Pattern for ':M' is "valu[e]"
ModifyWords: split "value" into 1 word
Result of ${:Mvalu[e]} is "value" (eval-defined, defined)
Global: delete VAR
Var_Parse: ${:Uvariable:unknown} (eval-defined)
Evaluating modifier ${:U...} on value "" (eval-defined, undefined)
Result of ${:Uvariable} is "variable" (eval-defined, defined)
Evaluating modifier ${:u...} on value "variable" (eval-defined, defined)
make: "vardebug.mk" line 63: Unknown modifier "unknown"
Result of ${:unknown} is error (eval-defined, defined)
make: "vardebug.mk" line 63: Malformed conditional (${:Uvariable:unknown})
Var_Parse: ${UNDEFINED} (eval-defined)
make: "vardebug.mk" line 73: Malformed conditional (${UNDEFINED})
Global: ignoring delete '.SHELL' as it is not found
Command: .SHELL = </path/to/shell>
Command: ignoring '.SHELL = overwritten' as it is read-only
Global: .MAKEFLAGS =  -r -k -d v -d
Global: .MAKEFLAGS =  -r -k -d v -d 0
make: Fatal errors encountered -- cannot continue
make: stopped in unit-tests
exit status 1