diff --git a/man2/brk.2 b/man2/brk.2
index 9cdb0df2d..7f735b70d 100644
--- a/man2/brk.2
+++ b/man2/brk.2
@@ -46,17 +46,17 @@ Feature Test Macro Requirements for glibc (see
 .BR sbrk ():
 .nf
     Since glibc 2.19:
-        _DEFAULT_SOURCE ||
-            (_XOPEN_SOURCE\ >=\ 500) &&
+        _DEFAULT_SOURCE
+            || ((_XOPEN_SOURCE\ >=\ 500) &&
+                ! (_POSIX_C_SOURCE\ >=\ 200112L))
 .\"    (_XOPEN_SOURCE\ >=\ 500 ||
 .\"        _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED) &&
-            ! (_POSIX_C_SOURCE\ >=\ 200112L)
     From glibc 2.12 to 2.19:
-        _BSD_SOURCE || _SVID_SOURCE ||
-            (_XOPEN_SOURCE\ >=\ 500) &&
+        _BSD_SOURCE || _SVID_SOURCE
+            || ((_XOPEN_SOURCE\ >=\ 500) &&
+                ! (_POSIX_C_SOURCE\ >=\ 200112L))
 .\"    (_XOPEN_SOURCE\ >=\ 500 ||
 .\"        _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED) &&
-            ! (_POSIX_C_SOURCE\ >=\ 200112L)
     Before glibc 2.12:
         _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 500
 .\"    || _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED
diff --git a/man2/chmod.2 b/man2/chmod.2
index 2853e0d47..b0238ca39 100644
--- a/man2/chmod.2
+++ b/man2/chmod.2
@@ -61,8 +61,8 @@ Feature Test Macro Requirements for glibc (see
     Glibc 2.16 to 2.19:
         _BSD_SOURCE || _POSIX_C_SOURCE
     Glibc 2.12 to 2.16:
-        _BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500 ||
-            _POSIX_C_SOURCE >= 200809L
+        _BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500
+            || _POSIX_C_SOURCE >= 200809L
     Glibc 2.11 and earlier:
         _BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500
 .\"        || (_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED)
diff --git a/man2/gethostname.2 b/man2/gethostname.2
index ffb28bdd5..a92715dbb 100644
--- a/man2/gethostname.2
+++ b/man2/gethostname.2
@@ -47,8 +47,8 @@ Feature Test Macro Requirements for glibc (see
 .PP
 .BR gethostname ():
 .nf
-    _XOPEN_SOURCE\ >=\ 500 || _POSIX_C_SOURCE\ >=\ 200112L ||
-        /* Glibc 2.19 and earlier */ _BSD_SOURCE
+    _XOPEN_SOURCE\ >=\ 500 || _POSIX_C_SOURCE\ >=\ 200112L
+        || /* Glibc 2.19 and earlier */ _BSD_SOURCE
 .\" The above is something of a simplification
 .\" also in glibc before 2.3 there was a bit churn
 .fi
diff --git a/man2/setpgid.2 b/man2/setpgid.2
index 66ccc79d9..1f7db5e48 100644
--- a/man2/setpgid.2
+++ b/man2/setpgid.2
@@ -88,8 +88,8 @@ Feature Test Macro Requirements for glibc (see
 .nf
     [These are available only before glibc 2.19]
     _BSD_SOURCE &&
-        !\ (_POSIX_SOURCE || _POSIX_C_SOURCE || _XOPEN_SOURCE ||
-            _GNU_SOURCE || _SVID_SOURCE)
+        !\ (_POSIX_SOURCE || _POSIX_C_SOURCE || _XOPEN_SOURCE
+            || _GNU_SOURCE || _SVID_SOURCE)
 .fi
 .SH DESCRIPTION
 All of these interfaces are available on Linux,
diff --git a/man2/wait4.2 b/man2/wait4.2
index faa63b30a..f45de09d1 100644
--- a/man2/wait4.2
+++ b/man2/wait4.2
@@ -53,9 +53,9 @@ Feature Test Macro Requirements for glibc (see
 .BR wait3 ():
 .nf
     Since glibc 2.26:
-        _DEFAULT_SOURCE ||
-        (_XOPEN_SOURCE\ >=\ 500 &&
-            ! (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600))
+        _DEFAULT_SOURCE
+            || (_XOPEN_SOURCE\ >=\ 500 &&
+                ! (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600))
     From glibc 2.19 to 2.25:
         _DEFAULT_SOURCE || _XOPEN_SOURCE\ >=\ 500
     Glibc 2.19 and earlier:
diff --git a/man3/atoi.3 b/man3/atoi.3
index f7e80a33f..264c1e2ce 100644
--- a/man3/atoi.3
+++ b/man3/atoi.3
@@ -49,7 +49,7 @@ Feature Test Macro Requirements for glibc (see
 .PP
 .BR atoll ():
 .nf
-    _ISOC99_SOURCE ||
+    _ISOC99_SOURCE
         || /* Glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
 .fi
 .SH DESCRIPTION
diff --git a/man3/fwide.3 b/man3/fwide.3
index 6bd55295c..48ffc9a26 100644
--- a/man3/fwide.3
+++ b/man3/fwide.3
@@ -30,8 +30,8 @@ Feature Test Macro Requirements for glibc (see
 .PP
 .BR fwide ():
 .nf
-    _XOPEN_SOURCE\ >=\ 500 || _ISOC99_SOURCE ||
-        _POSIX_C_SOURCE\ >=\ 200112L
+    _XOPEN_SOURCE\ >=\ 500 || _ISOC99_SOURCE
+        || _POSIX_C_SOURCE\ >=\ 200112L
 .fi
 .SH DESCRIPTION
 When \fImode\fP is zero, the
diff --git a/man3/getlogin.3 b/man3/getlogin.3
index 41ab63717..714e56f75 100644
--- a/man3/getlogin.3
+++ b/man3/getlogin.3
@@ -53,7 +53,7 @@ _POSIX_C_SOURCE\ >=\ 199506L
 .nf
     Since glibc 2.24:
         (_XOPEN_SOURCE && ! (_POSIX_C_SOURCE >= 200112L)
-        || _GNU_SOURCE
+            || _GNU_SOURCE
     Up to and including glibc 2.23:
         _XOPEN_SOURCE
 .fi
diff --git a/man3/printf.3 b/man3/printf.3
index 6f1d72cca..112350dbd 100644
--- a/man3/printf.3
+++ b/man3/printf.3
@@ -63,7 +63,7 @@ Feature Test Macro Requirements for glibc (see
 .BR snprintf (),
 .BR vsnprintf ():
 .nf
-    _XOPEN_SOURCE\ >=\ 500 || _ISOC99_SOURCE ||
+    _XOPEN_SOURCE\ >=\ 500 || _ISOC99_SOURCE
         || /* Glibc <= 2.19: */ _BSD_SOURCE
 .fi
 .PP
diff --git a/man3/strtoul.3 b/man3/strtoul.3
index 5559a0ecd..1774d605a 100644
--- a/man3/strtoul.3
+++ b/man3/strtoul.3
@@ -50,7 +50,7 @@ Feature Test Macro Requirements for glibc (see
 .PP
 .BR strtoull ():
 .nf
-    _ISOC99_SOURCE ||
+    _ISOC99_SOURCE
         || /* Glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE
 .fi
 .SH DESCRIPTION
diff --git a/man3/wprintf.3 b/man3/wprintf.3
index a98e17ed1..a55437f06 100644
--- a/man3/wprintf.3
+++ b/man3/wprintf.3
@@ -46,8 +46,8 @@ All functions shown above:
 .\" .BR vfwprintf (),
 .\" .BR vswprintf ():
 .nf
-    _XOPEN_SOURCE\ >=\ 500 || _ISOC99_SOURCE ||
-        _POSIX_C_SOURCE\ >=\ 200112L
+    _XOPEN_SOURCE\ >=\ 500 || _ISOC99_SOURCE
+        || _POSIX_C_SOURCE\ >=\ 200112L
 .fi
 .SH DESCRIPTION
 The