Minor backslash fixes in manuals and scripts

* Makefile.in (install-arch-indep):
* admin/charsets/compact.awk:
* admin/charsets/gb180302.awk (gb_to_index):
* admin/charsets/gb180304.awk (gb_to_index):
Avoid undefined behavior in Awk regular expression backslashes.
* doc/misc/efaq.texi (Matching parentheses):
Omit unnecessary backslashes.
* doc/misc/gnus-faq.texi (FAQ 5-8):
Avoid undefined behavior in suggested sed backslash usage.

3 files changed, 5 insertions, 8 deletions

diff --git a/admin/charsets/compact.awk b/admin/charsets/compact.awk
index b7d1fd19d8e..21e03ee4157 100644
--- a/admin/charsets/compact.awk
+++ b/admin/charsets/compact.awk
@@ -69,7 +69,7 @@ function decode_hex(str, idx) {
   return n;
 }
 
-/^\#/ {
+/^#/ {
   print;
   next;
 }
@@ -119,4 +119,3 @@ END {
         printf "0x%04X-0x%04X 0x%04X\n", from_code, to_code, from_unicode;
     }
 }
-
diff --git a/admin/charsets/gb180302.awk b/admin/charsets/gb180302.awk
index 40d92bf9be4..4947f966371 100644
--- a/admin/charsets/gb180302.awk
+++ b/admin/charsets/gb180302.awk
@@ -53,7 +53,7 @@ function decode_hex(str) {
 function gb_to_index(gb) {
   b0 = int(gb / 256);
   b1 = gb % 256;
-  idx = (((b0 - 129)) * 191 + b1 - 64); 
+  idx = (((b0 - 129)) * 191 + b1 - 64);
 #  if (b1 >= 128)
 #    idx--;
   return idx
@@ -67,7 +67,7 @@ function index_to_gb(idx) {
   return (b0 * 256 + b1);
 }
 
-/^\#/ {
+/^#/ {
   print;
   next;
 }
@@ -108,4 +108,3 @@ END {
     printf "0x%04X-0x%04X 0x%04X\n",
       index_to_gb(from_gb), index_to_gb(to_gb), from_unicode;
 }
-
diff --git a/admin/charsets/gb180304.awk b/admin/charsets/gb180304.awk
index 3c16cb556ea..81d7e7301bf 100644
--- a/admin/charsets/gb180304.awk
+++ b/admin/charsets/gb180304.awk
@@ -49,7 +49,7 @@ function decode_hex(str) {
 function gb_to_index(gb) {
   b0 = int(gb / 256);
   b1 = gb % 256;
-  idx = (((b0 - 129)) * 191 + b1 - 64); 
+  idx = (((b0 - 129)) * 191 + b1 - 64);
 #  if (b1 >= 127)
 #    idx--;
   return idx
@@ -65,7 +65,7 @@ function index_to_gb(idx) {
   return sprintf("%02X%02X%02X%02X", b0, b1, b2, b3);
 }
 
-/^\#/ {
+/^#/ {
   print;
   next;
 }
@@ -119,4 +119,3 @@ END {
         }
     }
 }
-