[Bug 248813] bzgrep ignores --no-filename flag

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248813

            Bug ID: 248813
           Summary: bzgrep ignores --no-filename flag
           Product: Base System
           Version: 12.1-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs at FreeBSD.org
          Reporter: moviuro+freebsd at gmail.com

Steps:

echo '1.1.1.1' > file1; echo '1.1.1.0' > file2
bzip2 -k file1 ; bzip2 -k file2
bzgrep --no-filename 1.1.1 file*bz2

Expected: flag is honored

1.1.1.1
1.1.1.0

Actual: flag is ignored

file1.bz2:1.1.1.1
file2.bz2:1.1.1.0

Patch below:

--- /usr/bin/bzgrep.orig        2020-08-21 19:10:56.072359000 +0200
+++ /usr/bin/bzgrep     2020-08-21 19:08:19.219508000 +0200
@@ -114,6 +114,9 @@
            exec ${grep} -V
            ;;
        -*)
+            case $1 in
+              --no-filename) silent=1 ;;
+            esac
            grep_args="${grep_args} $1"
            shift
            ;;

FWIW; the bzgrep from https://sourceware.org/bzip2/ also has troubles with that
specific --no-filename flag.

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