maint: split long lines, and enforce the 80-column limit

* cfg.mk (sc_long_lines): New rule, from coreutils; exempt tests/*
* src/grep.c (usage): Tweak -F wording to shorten a line.
Correct grammar in a comment.
Split the --exclude-file=... description to fit within 80 columns.
Use emit_bug_reporting_address, eliminating another long line.
* src/dfa.c: Split long lines.  No semantic change.
* doc/grep.texi: Likewise.
* tests/include-exclude: Split a long line.
* tests/backref: Split long lines.
* tests/empty: Likewise.
* tests/fmbtest: Likewise.

1 files changed, 14 insertions, 8 deletions

diff --git a/tests/fmbtest b/tests/fmbtest
index 922f40b0..bec5403b 100755
--- a/tests/fmbtest
+++ b/tests/fmbtest
@@ -81,22 +81,28 @@ fi
 #  failures=1
 #fi
 
-# Test that --color=always does not depend on individual pattern order within the pattern
-# list, and that a longer match is preferred to a shorter one starting at the same point.
+# Test that --color=always does not depend on individual pattern order
+# within the pattern list, and that a longer match is preferred to a
+# shorter one starting at the same point.
 test6="$(echo 'Cosi tu ČišÍ...' \
-        | LC_ALL=$cz grep --color=always -${mode}i -e 'čiš' -e 'čiší')"
-if echo "$test6" | LC_ALL=C grep -q 'Cosi tu .*\[.*m\(.\[K\)\?ČišÍ.*\[.*m\(.\[K\)\?\.\.\.'; then
+  | LC_ALL=$cz grep --color=always -${mode}i -e 'čiš' -e 'čiší')"
+if echo "$test6" \
+  | LC_ALL=C grep -q 'Cosi tu .*\[.*m\(.\[K\)\?ČišÍ.*\[.*m\(.\[K\)\?\.\.\.'; \
+then
   :
 else
   echo "Test #6 ${mode} failed: $test6"
   failures=1
 fi
 
-# Test that --color=always does not depend on individual pattern order within the pattern
-# list, and that a longer match is preferred to a shorter one starting at the same point.
+# Test that --color=always does not depend on individual pattern order
+# within the pattern list, and that a longer match is preferred to a
+# shorter one starting at the same point.
 test7="$(echo 'Cosi tu ČišÍ...' \
-        | LC_ALL=$cz grep --color=always -${mode}i -e 'čiší' -e 'čiš')"
-if echo "$test7" | LC_ALL=C grep -q 'Cosi tu .*\[.*m\(.\[K\)\?ČišÍ.*\[.*m\(.\[K\)\?\.\.\.'; then
+  | LC_ALL=$cz grep --color=always -${mode}i -e 'čiší' -e 'čiš')"
+if echo "$test7" \
+  | LC_ALL=C grep -q 'Cosi tu .*\[.*m\(.\[K\)\?ČišÍ.*\[.*m\(.\[K\)\?\.\.\.'; \
+then
   :
 else
   echo "Test #7 ${mode} failed: $test7"