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      1 # $NetBSD: sh-dots.mk,v 1.4 2023/11/19 21:47:52 rillig Exp $
      2 #
      3 # Tests for the special shell command line "...", which does not run the
      4 # commands below it but appends them to the list of commands that are run
      5 # at the end.
      6 
      7 .MAKEFLAGS: -d0			# switch stdout to being line-buffered
      8 
      9 all: first hidden repeated commented indirect indirect-space
     10 
     11 # The ${.TARGET} correctly expands to the target name, even though the
     12 # commands are run separately from the main commands.
     13 first:
     14 	@echo first ${.TARGET}
     15 	...
     16 	@echo first delayed ${.TARGET}
     17 
     18 # The dots cannot be prefixed by the usual @-+ characters.
     19 # They must be written exactly as dots.
     20 hidden: .IGNORE
     21 	@echo hidden ${.TARGET}
     22 	@...
     23 	@echo hidden delayed ${.TARGET}
     24 
     25 # Since the shell command lines don't recognize '#' as comment character,
     26 # the "..." is not interpreted specially here.
     27 commented: .IGNORE
     28 	@echo commented ${.TARGET}
     29 	...	# Run the below commands later
     30 	@echo commented delayed ${.TARGET}
     31 
     32 # The dots don't have to be written literally, they can also come from an
     33 # expression.
     34 indirect:
     35 	@echo indirect regular
     36 	${:U...}
     37 	@echo indirect deferred
     38 
     39 # If the dots are followed by a space, that space is part of the command and
     40 # thus does not defer the command below it.
     41 indirect-space: .IGNORE
     42 	@echo indirect-space regular
     43 	${:U... }
     44 	@echo indirect-space deferred
     45 
     46 
     47 # The "..." can appear more than once, even though that doesn't make sense.
     48 # The second "..." is a no-op.
     49 repeated: .IGNORE
     50 	@echo repeated ${.TARGET}
     51 	...
     52 	@echo repeated delayed ${.TARGET}
     53 	...
     54 	@echo repeated delayed twice ${.TARGET}
     55