public inbox for libc-alpha@sourceware.org
 help / color / mirror / Atom feed
From: Joseph Myers <josmyers@redhat.com>
To: libc-alpha@sourceware.org
Subject: Rename c2x / gnu2x tests to c23 / gnu23
Date: Thu, 1 Feb 2024 17:43:07 +0000 (UTC)	[thread overview]
Message-ID: <c78f527-f88-964c-cdef-6323b4647be4@redhat.com> (raw)

Complete the internal renaming from "C2X" and related names in GCC by
renaming *-c2x and *-gnu2x tests to *-c23 and *-gnu23.

Tested for x86_64, and with build-many-glibcs.py for powerpc64le.

diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index 60a7f4cff3..6447b6b444 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -240,7 +240,7 @@ tests := \
   tst-renameat2 \
   tst-rndseek \
   tst-scanf-binary-c11 \
-  tst-scanf-binary-c2x \
+  tst-scanf-binary-c23 \
   tst-scanf-binary-gnu11 \
   tst-scanf-binary-gnu89 \
   tst-scanf-intn \
@@ -495,7 +495,7 @@ CFLAGS-tst-memstream-string.c += -fno-builtin-fprintf
 # the test for that version uses -std=c11 and then _ISOC23_SOURCE is defined in
 # the test as needed.
 CFLAGS-tst-scanf-binary-c11.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
-CFLAGS-tst-scanf-binary-c2x.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-scanf-binary-c23.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
 CFLAGS-tst-scanf-binary-gnu11.c += -std=gnu11 -DOBJPFX=\"$(objpfx)\"
 CFLAGS-tst-scanf-binary-gnu89.c += -std=gnu89 -DOBJPFX=\"$(objpfx)\"
 
diff --git a/stdio-common/tst-scanf-binary-c2x.c b/stdio-common/tst-scanf-binary-c23.c
similarity index 100%
rename from stdio-common/tst-scanf-binary-c2x.c
rename to stdio-common/tst-scanf-binary-c23.c
diff --git a/stdlib/Makefile b/stdlib/Makefile
index e9f9c7856d..8b0ac63ddb 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -337,9 +337,9 @@ tests := \
   tst-strtod6 \
   tst-strtol \
   tst-strtol-binary-c11 \
-  tst-strtol-binary-c2x \
+  tst-strtol-binary-c23 \
   tst-strtol-binary-gnu11 \
-  tst-strtol-binary-gnu2x \
+  tst-strtol-binary-gnu23 \
   tst-strtol-locale \
   tst-strtoll \
   tst-swapcontext1 \
@@ -527,9 +527,9 @@ CFLAGS-testmb.c += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Wall -Werror
 # (added in GCC 9), so the tests for those versions use -std=c11 and -std=gnu11
 # and then _ISOC23_SOURCE is defined in the test as needed.
 CFLAGS-tst-strtol-binary-c11.c += -std=c11
-CFLAGS-tst-strtol-binary-c2x.c += -std=c11
+CFLAGS-tst-strtol-binary-c23.c += -std=c11
 CFLAGS-tst-strtol-binary-gnu11.c += -std=gnu11
-CFLAGS-tst-strtol-binary-gnu2x.c += -std=gnu11
+CFLAGS-tst-strtol-binary-gnu23.c += -std=gnu11
 
 
 # Run a test on the header files we use.
diff --git a/stdlib/tst-strtol-binary-c2x.c b/stdlib/tst-strtol-binary-c23.c
similarity index 100%
rename from stdlib/tst-strtol-binary-c2x.c
rename to stdlib/tst-strtol-binary-c23.c
diff --git a/stdlib/tst-strtol-binary-gnu2x.c b/stdlib/tst-strtol-binary-gnu23.c
similarity index 100%
rename from stdlib/tst-strtol-binary-gnu2x.c
rename to stdlib/tst-strtol-binary-gnu23.c
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
index 20cb2dbe35..910c0198eb 100644
--- a/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/Makefile
@@ -346,11 +346,11 @@ endif
 
 ifeq ($(subdir), stdio-common)
 tests += tst-ibm128-scanf-binary-c11 \
-	 tst-ibm128-scanf-binary-c2x \
+	 tst-ibm128-scanf-binary-c23 \
 	 tst-ibm128-scanf-binary-gnu11 \
 	 tst-ibm128-scanf-binary-gnu89 \
 	 tst-ieee128-scanf-binary-c11 \
-	 tst-ieee128-scanf-binary-c2x \
+	 tst-ieee128-scanf-binary-c23 \
 	 tst-ieee128-scanf-binary-gnu11 \
 	 tst-ieee128-scanf-binary-gnu89
 
@@ -360,7 +360,7 @@ tests += tst-ibm128-scanf-binary-c11 \
 # the test as needed.
 CFLAGS-tst-ibm128-scanf-binary-c11.c += -mabi=ibmlongdouble -Wno-psabi \
 					-std=c11 -DOBJPFX=\"$(objpfx)\"
-CFLAGS-tst-ibm128-scanf-binary-c2x.c += -mabi=ibmlongdouble -Wno-psabi \
+CFLAGS-tst-ibm128-scanf-binary-c23.c += -mabi=ibmlongdouble -Wno-psabi \
 					-std=c11 -DOBJPFX=\"$(objpfx)\"
 CFLAGS-tst-ibm128-scanf-binary-gnu11.c += -mabi=ibmlongdouble -Wno-psabi \
 					  -std=gnu11 -DOBJPFX=\"$(objpfx)\"
@@ -369,7 +369,7 @@ CFLAGS-tst-ibm128-scanf-binary-gnu89.c += -mabi=ibmlongdouble -Wno-psabi \
 CFLAGS-tst-ieee128-scanf-binary-c11.c += -mfloat128 -mabi=ieeelongdouble \
 					 -Wno-psabi -std=c11 \
 					 -DOBJPFX=\"$(objpfx)\"
-CFLAGS-tst-ieee128-scanf-binary-c2x.c += -mfloat128 -mabi=ieeelongdouble \
+CFLAGS-tst-ieee128-scanf-binary-c23.c += -mfloat128 -mabi=ieeelongdouble \
 					 -Wno-psabi -std=c11 \
 					 -DOBJPFX=\"$(objpfx)\"
 CFLAGS-tst-ieee128-scanf-binary-gnu11.c += -mfloat128 -mabi=ieeelongdouble \
@@ -383,11 +383,11 @@ endif
 
 ifeq ($(subdir), wcsmbs)
 tests += tst-ibm128-wscanf-binary-c11 \
-	 tst-ibm128-wscanf-binary-c2x \
+	 tst-ibm128-wscanf-binary-c23 \
 	 tst-ibm128-wscanf-binary-gnu11 \
 	 tst-ibm128-wscanf-binary-gnu89 \
 	 tst-ieee128-wscanf-binary-c11 \
-	 tst-ieee128-wscanf-binary-c2x \
+	 tst-ieee128-wscanf-binary-c23 \
 	 tst-ieee128-wscanf-binary-gnu11 \
 	 tst-ieee128-wscanf-binary-gnu89
 
@@ -397,7 +397,7 @@ tests += tst-ibm128-wscanf-binary-c11 \
 # the test as needed.
 CFLAGS-tst-ibm128-wscanf-binary-c11.c += -mabi=ibmlongdouble -Wno-psabi \
 					 -std=c11 -DOBJPFX=\"$(objpfx)\"
-CFLAGS-tst-ibm128-wscanf-binary-c2x.c += -mabi=ibmlongdouble -Wno-psabi \
+CFLAGS-tst-ibm128-wscanf-binary-c23.c += -mabi=ibmlongdouble -Wno-psabi \
 					 -std=c11 -DOBJPFX=\"$(objpfx)\"
 CFLAGS-tst-ibm128-wscanf-binary-gnu11.c += -mabi=ibmlongdouble -Wno-psabi \
 					   -std=gnu11 -DOBJPFX=\"$(objpfx)\"
@@ -406,7 +406,7 @@ CFLAGS-tst-ibm128-wscanf-binary-gnu89.c += -mabi=ibmlongdouble -Wno-psabi \
 CFLAGS-tst-ieee128-wscanf-binary-c11.c += -mfloat128 -mabi=ieeelongdouble \
 					  -Wno-psabi -std=c11 \
 					  -DOBJPFX=\"$(objpfx)\"
-CFLAGS-tst-ieee128-wscanf-binary-c2x.c += -mfloat128 -mabi=ieeelongdouble \
+CFLAGS-tst-ieee128-wscanf-binary-c23.c += -mfloat128 -mabi=ieeelongdouble \
 					  -Wno-psabi -std=c11 \
 					  -DOBJPFX=\"$(objpfx)\"
 CFLAGS-tst-ieee128-wscanf-binary-gnu11.c += -mfloat128 -mabi=ieeelongdouble \
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c23.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c23.c
new file mode 100644
index 0000000000..982d33557e
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c23.c
@@ -0,0 +1,2 @@
+#define STDX "ibm128-"
+#include <tst-scanf-binary-c23.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c2x.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c2x.c
deleted file mode 100644
index f8bb2e4be3..0000000000
--- a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-scanf-binary-c2x.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define STDX "ibm128-"
-#include <tst-scanf-binary-c2x.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c23.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c23.c
new file mode 100644
index 0000000000..594afd51e9
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c23.c
@@ -0,0 +1,2 @@
+#define STDX "ibm128-"
+#include <tst-wscanf-binary-c23.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c2x.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c2x.c
deleted file mode 100644
index bf0c3da75e..0000000000
--- a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ibm128-wscanf-binary-c2x.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define STDX "ibm128-"
-#include <tst-wscanf-binary-c2x.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c23.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c23.c
new file mode 100644
index 0000000000..ce25ef0802
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c23.c
@@ -0,0 +1,2 @@
+#define STDX "ieee128-"
+#include <tst-scanf-binary-c23.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c2x.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c2x.c
deleted file mode 100644
index d09c21394c..0000000000
--- a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-scanf-binary-c2x.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define STDX "ieee128-"
-#include <tst-scanf-binary-c2x.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c23.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c23.c
new file mode 100644
index 0000000000..c0b52338c0
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c23.c
@@ -0,0 +1,2 @@
+#define STDX "ieee128-"
+#include <tst-wscanf-binary-c23.c>
diff --git a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c2x.c b/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c2x.c
deleted file mode 100644
index 7e2d27c6d2..0000000000
--- a/sysdeps/ieee754/ldbl-128ibm-compat/tst-ieee128-wscanf-binary-c2x.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define STDX "ieee128-"
-#include <tst-wscanf-binary-c2x.c>
diff --git a/sysdeps/ieee754/ldbl-opt/Makefile b/sysdeps/ieee754/ldbl-opt/Makefile
index f20c267081..74788ac999 100644
--- a/sysdeps/ieee754/ldbl-opt/Makefile
+++ b/sysdeps/ieee754/ldbl-opt/Makefile
@@ -232,7 +232,7 @@ endif
 
 ifeq ($(subdir), stdio-common)
 tests += tst-nldbl-scanf-binary-c11 \
-	 tst-nldbl-scanf-binary-c2x \
+	 tst-nldbl-scanf-binary-c23 \
 	 tst-nldbl-scanf-binary-gnu11 \
 	 tst-nldbl-scanf-binary-gnu89
 
@@ -242,7 +242,7 @@ tests += tst-nldbl-scanf-binary-c11 \
 # the test as needed.
 CFLAGS-tst-nldbl-scanf-binary-c11.c += -mlong-double-64 -std=c11 \
 				       -DOBJPFX=\"$(objpfx)\"
-CFLAGS-tst-nldbl-scanf-binary-c2x.c += -mlong-double-64 -std=c11 \
+CFLAGS-tst-nldbl-scanf-binary-c23.c += -mlong-double-64 -std=c11 \
 				       -DOBJPFX=\"$(objpfx)\"
 CFLAGS-tst-nldbl-scanf-binary-gnu11.c += -mlong-double-64 -std=gnu11 \
 					 -DOBJPFX=\"$(objpfx)\"
@@ -253,7 +253,7 @@ endif
 
 ifeq ($(subdir), wcsmbs)
 tests += tst-nldbl-wscanf-binary-c11 \
-	 tst-nldbl-wscanf-binary-c2x \
+	 tst-nldbl-wscanf-binary-c23 \
 	 tst-nldbl-wscanf-binary-gnu11 \
 	 tst-nldbl-wscanf-binary-gnu89
 
@@ -263,7 +263,7 @@ tests += tst-nldbl-wscanf-binary-c11 \
 # the test as needed.
 CFLAGS-tst-nldbl-wscanf-binary-c11.c += -mlong-double-64 -std=c11 \
 					-DOBJPFX=\"$(objpfx)\"
-CFLAGS-tst-nldbl-wscanf-binary-c2x.c += -mlong-double-64 -std=c11 \
+CFLAGS-tst-nldbl-wscanf-binary-c23.c += -mlong-double-64 -std=c11 \
 					-DOBJPFX=\"$(objpfx)\"
 CFLAGS-tst-nldbl-wscanf-binary-gnu11.c += -mlong-double-64 -std=gnu11 \
 					  -DOBJPFX=\"$(objpfx)\"
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c23.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c23.c
new file mode 100644
index 0000000000..f30d9501f8
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c23.c
@@ -0,0 +1,2 @@
+#define STDX "nldbl-"
+#include <tst-scanf-binary-c23.c>
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c2x.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c2x.c
deleted file mode 100644
index 4e0cf7570f..0000000000
--- a/sysdeps/ieee754/ldbl-opt/tst-nldbl-scanf-binary-c2x.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define STDX "nldbl-"
-#include <tst-scanf-binary-c2x.c>
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c23.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c23.c
new file mode 100644
index 0000000000..0fd61276d1
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c23.c
@@ -0,0 +1,2 @@
+#define STDX "nldbl-"
+#include <tst-wscanf-binary-c23.c>
diff --git a/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c2x.c b/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c2x.c
deleted file mode 100644
index 7637aab0d4..0000000000
--- a/sysdeps/ieee754/ldbl-opt/tst-nldbl-wscanf-binary-c2x.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#define STDX "nldbl-"
-#include <tst-wscanf-binary-c2x.c>
diff --git a/sysdeps/powerpc/powerpc64/le/Makefile b/sysdeps/powerpc/powerpc64/le/Makefile
index 5214eb40ad..9d568d4f44 100644
--- a/sysdeps/powerpc/powerpc64/le/Makefile
+++ b/sysdeps/powerpc/powerpc64/le/Makefile
@@ -161,7 +161,7 @@ CFLAGS-printf_size.c = $(type-float128-CFLAGS)
 #Older GCC (<10) doesn't like -mabi=ieeelongdouble and -mlong-double-64.
 $(foreach suf,$(all-object-suffixes),\
          $(objpfx)tst-nldbl-scanf-binary-c11$(suf) \
-         $(objpfx)tst-nldbl-scanf-binary-c2x$(suf) \
+         $(objpfx)tst-nldbl-scanf-binary-c23$(suf) \
          $(objpfx)tst-nldbl-scanf-binary-gnu11$(suf) \
          $(objpfx)tst-nldbl-scanf-binary-gnu89$(suf) \
          ): sysdep-CFLAGS := $(filter-out -mabi=ieeelongdouble,$(sysdep-CFLAGS))
@@ -171,7 +171,7 @@ endif
 ifeq ($(subdir), wcsmbs)
 $(foreach suf,$(all-object-suffixes),\
          $(objpfx)tst-nldbl-wscanf-binary-c11$(suf) \
-         $(objpfx)tst-nldbl-wscanf-binary-c2x$(suf) \
+         $(objpfx)tst-nldbl-wscanf-binary-c23$(suf) \
          $(objpfx)tst-nldbl-wscanf-binary-gnu11$(suf) \
          $(objpfx)tst-nldbl-wscanf-binary-gnu89$(suf) \
          ): sysdep-CFLAGS := $(filter-out -mabi=ieeelongdouble,$(sysdep-CFLAGS))
diff --git a/wcsmbs/Makefile b/wcsmbs/Makefile
index b64a5e1ce5..f3333c6a4b 100644
--- a/wcsmbs/Makefile
+++ b/wcsmbs/Makefile
@@ -188,14 +188,14 @@ tests := \
   tst-wcstod-round \
   tst-wcstof \
   tst-wcstol-binary-c11 \
-  tst-wcstol-binary-c2x \
+  tst-wcstol-binary-c23 \
   tst-wcstol-binary-gnu11 \
-  tst-wcstol-binary-gnu2x \
+  tst-wcstol-binary-gnu23 \
   tst-wcstol-locale \
   tst-wprintf-binary \
   tst-wprintf-intn \
   tst-wscanf-binary-c11 \
-  tst-wscanf-binary-c2x \
+  tst-wscanf-binary-c23 \
   tst-wscanf-binary-gnu11 \
   tst-wscanf-binary-gnu89 \
   tst-wscanf-intn \
@@ -290,10 +290,10 @@ $(objpfx)tst-wcstod-nan-sign: $(libm)
 # (added in GCC 9), so the tests for those versions use -std=c11 and -std=gnu11
 # and then _ISOC23_SOURCE is defined in the test as needed.
 CFLAGS-tst-wcstol-binary-c11.c += -std=c11
-CFLAGS-tst-wcstol-binary-c2x.c += -std=c11
+CFLAGS-tst-wcstol-binary-c23.c += -std=c11
 CFLAGS-tst-wcstol-binary-gnu11.c += -std=gnu11
-CFLAGS-tst-wcstol-binary-gnu2x.c += -std=gnu11
+CFLAGS-tst-wcstol-binary-gnu23.c += -std=gnu11
 CFLAGS-tst-wscanf-binary-c11.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
-CFLAGS-tst-wscanf-binary-c2x.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
+CFLAGS-tst-wscanf-binary-c23.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
 CFLAGS-tst-wscanf-binary-gnu11.c += -std=gnu11 -DOBJPFX=\"$(objpfx)\"
 CFLAGS-tst-wscanf-binary-gnu89.c += -std=gnu89 -DOBJPFX=\"$(objpfx)\"
diff --git a/wcsmbs/tst-wcstol-binary-c2x.c b/wcsmbs/tst-wcstol-binary-c23.c
similarity index 100%
rename from wcsmbs/tst-wcstol-binary-c2x.c
rename to wcsmbs/tst-wcstol-binary-c23.c
diff --git a/wcsmbs/tst-wcstol-binary-gnu2x.c b/wcsmbs/tst-wcstol-binary-gnu23.c
similarity index 100%
rename from wcsmbs/tst-wcstol-binary-gnu2x.c
rename to wcsmbs/tst-wcstol-binary-gnu23.c
diff --git a/wcsmbs/tst-wscanf-binary-c2x.c b/wcsmbs/tst-wscanf-binary-c23.c
similarity index 100%
rename from wcsmbs/tst-wscanf-binary-c2x.c
rename to wcsmbs/tst-wscanf-binary-c23.c

-- 
Joseph S. Myers
josmyers@redhat.com


             reply	other threads:[~2024-02-01 17:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-01 17:43 Joseph Myers [this message]
2024-02-01 17:54 ` Adhemerval Zanella Netto

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=c78f527-f88-964c-cdef-6323b4647be4@redhat.com \
    --to=josmyers@redhat.com \
    --cc=libc-alpha@sourceware.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).