Redirect some errors to /dev/null

It’s not useful or helpful for these errors to appear in the terminal
while executing the makefile.

diff --git a/GNUmakefile b/GNUmakefile
index 70183f8bfe092712f0428c90dee2811b8b752af5..a272f9a218c68b568cc294f62e002f35009dd092 100644 (file)
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -237,13 +237,13 @@ ifdef GIT
 ifneq ($(wildcard $(THISDIR)/.git),)
 # (overridable) The name of the current revision of ⛩️📰 书社, or its
 # hash if the current revision is not a tag.
-thisrev = $(shell cd $(THISDIR); $(GIT) describe 2> /dev/null || $(GIT) rev-parse HEAD)
+thisrev = $(shell cd $(THISDIR); $(GIT) describe 2> /dev/null || $(GIT) rev-parse HEAD 2> /dev/null || true)
 endif
 
 ifneq ($(wildcard .git),)
 # (overridable) The name of the current revision of the working
 # directory, or its hash if the current revision is not a tag.
-srcrev = $(shell $(GIT) describe 2> /dev/null || $(GIT) rev-parse HEAD)
+srcrev = $(shell $(GIT) describe 2> /dev/null || $(GIT) rev-parse HEAD 2> /dev/null || true)
 endif
 endif
 
@@ -270,7 +270,7 @@ override assetfiles := $(filter-out $(xmlfiles) $(plaintextfiles),$(sourcefiles)
 override typeoffile = $(patsubst $(foreach file,$1,$(file)|%),%,$(filter $(foreach file,$1,$(file)|%),$(types)))
 
 # (callable) Get the identifier for the given parser or transform.
-override id = $(or $(shell $(XMLLINT) --xpath '/*/*[local-name()="id" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"]/text()[1]' $1),about:shushe?$(or $2,unknown)=$(call pathenc,$(basename $(notdir $1))))
+override id = $(or $(shell $(XMLLINT) --xpath '/*/*[local-name()="id" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"]/text()[1]' $1 2> /dev/null),about:shushe?$(or $2,unknown)=$(call pathenc,$(basename $(notdir $1))))
 
 # (callable) Get the local path for the given source file.
 override sourcepath = $(firstword $(foreach directory,$(SRCDIR),$(if $(filter $(directory)/%,$1),$(patsubst $(directory)/%,%,$1),)))