Pull request 1998: upd-proj-skel

Squashed commit of the following:

commit 5cc2914b18fd71ff83e2872ef6755f2ff56d653c
Merge: bf14a513e 085b4fdce
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Sep 7 14:58:44 2023 +0300

    Merge branch 'master' into upd-proj-skel

commit bf14a513eb46ebf2c2809246603b071e6c334e9f
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Sep 7 14:47:10 2023 +0300

    all: imp code

commit ec3f7a88b86b3f423193aa95c2e820bcd86fdef3
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Sep 7 14:28:39 2023 +0300

    scripts: upd go lint

commit 6a9342f6058bc21252f97045f7015440f013cb09
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Sep 7 14:13:17 2023 +0300

    all: upd proj skel

scripts/make/txt-lint.sh

@@ -3,7 +3,7 @@
 # This comment is used to simplify checking local copies of the script.  Bump
 # this number every time a remarkable change is made to this script.
 #
-# AdGuard-Project-Version: 4
+# AdGuard-Project-Version: 5
 
 verbose="${VERBOSE:-0}"
 readonly verbose
@@ -31,7 +31,7 @@ set -f -u
 
 # trailing_newlines is a simple check that makes sure that all plain-text files
 # have a trailing newlines to make sure that all tools work correctly with them.
-trailing_newlines() {
+trailing_newlines() (
 	nl="$( printf "\n" )"
 	readonly nl
 
@@ -42,12 +42,13 @@ trailing_newlines() {
 		':!*.zip'\
 		| while read -r f
 		do
-			if [ "$( tail -c -1 "$f" )" != "$nl" ]
+			final_byte="$( tail -c -1 "$f" )"
+			if [ "$final_byte" != "$nl" ]
 			then
 				printf '%s: must have a trailing newline\n' "$f"
 			fi
 		done
-}
+)
 
 # trailing_whitespace is a simple check that makes sure that there are no
 # trailing whitespace in plain-text files.