From d19d5092749d6f9fceeffbcf9822c11fafeec5fa Mon Sep 17 00:00:00 2001
From: yueyuankun <yueyuankun@kylinos.cn>
Date: Mon, 30 Mar 2026 16:03:48 +0800
Subject: [PATCH] Make release delimiter matching case-insensitive in
 lsb_release

The lsb_release script currently only matches lowercase release when
parsing distribution description strings from /etc/*-release files.
This causes it to fail on distributions that use Release with a
capital R, resulting in n/a for Distributor ID, Release, and
Codename fields.

For example, with a release file containing:
  "Linux Advanced Server Release Hello (Hi)"

Before this fix:
  Distributor ID: n/a
  Release:        n/a
  Codename:       n/a

After this fix:
  Distributor ID: LinuxAdvancedServer
  Release:        Hello
  Codename:       Hi

This change adds the I (case-insensitive) flag to all sed commands
that match DESCSTR_DELI, making the script more robust and compatible
with both "release" and "Release" formats used by different distributions.

The modification maintains backward compatibility with existing
distributions that use lowercase "release"
while also supporting those that use capitalized "Release".
---
 lsb_release/src/lsb_release | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/lsb_release/src/lsb_release b/lsb_release/src/lsb_release
index fb4cbc5..30c6c28 100755
--- a/lsb_release/src/lsb_release
+++ b/lsb_release/src/lsb_release
@@ -244,7 +244,7 @@ EASE ($DISTRIB_CODENAME)"
         NO=""                    # is Description string syntax correct ?
         if [ -z "$DISTRIB_DESCRIPTION" ]                                      \
             || [ -n "$(echo $DISTRIB_DESCRIPTION |                            \
-                       sed -e "s/.*$DESCSTR_DELI.*//")" ]
+                       sed -e "s/.*$DESCSTR_DELI.*//I")" ]
         then
             TMP_DISTRIB_DESC=$(head -n 1 $FILENAME 2>/dev/null)
             [ -z "$DISTRIB_DESCRIPTION" ]                                     \
@@ -259,7 +259,7 @@ EASE ($DISTRIB_CODENAME)"
             NO="y"
         else                           # Do simple check
             [ -n "$(echo $TMP_DISTRIB_DESC |                                  \
-                    sed -e "s/.*$DESCSTR_DELI.*//")" ]                        \
+                    sed -e "s/.*$DESCSTR_DELI.*//I")" ]                       \
                 && NO="y"
         fi
 
@@ -306,13 +306,13 @@ DisplayID() {
 ## Linux could be part of the distro name (i.e. Turbolinux) or a separate word
 ## set before, after...
 ## also expect a delimiter ( i.e. "release" )
-        if [ -n "$(echo $TMP_DISTRIB_DESC | sed "s/.*$DESCSTR_DELI.*//")" ]
+        if [ -n "$(echo $TMP_DISTRIB_DESC | sed "s/.*$DESCSTR_DELI.*//I")" ]
         then
             DISTRIB_ID=$MSG_NA
         else
             DISTRIB_ID=$(echo " $TMP_DISTRIB_DESC"                            \
             | sed -e "s/[[:blank:]][Ll][Ii][Nn][Uu][Xx][[:blank:]]/ /g"       \
-            -e "s/\(.*\)[[:blank:]]$DESCSTR_DELI.*/\1/" -e "s/[[:blank:]]//g")
+            -e "s/\(.*\)[[:blank:]]$DESCSTR_DELI.*/\1/I" -e "s/[[:blank:]]//g")
         fi
     fi
     if [ -z "$ARG_S" ]
@@ -343,7 +343,7 @@ DisplayRelease() {
     if [ -z "$DISTRIB_RELEASE" ]
     then                       # parse the "$DISTRIB_DESCRIPTION" string
         DISTRIB_RELEASE=$(echo "$TMP_DISTRIB_DESC" |                          \
-      sed -e "s/.*$DESCSTR_DELI[[:blank:]]*\([[:digit:]][[:graph:]]*\).*/\1/" )
+      sed -e "s/.*$DESCSTR_DELI[[:blank:]]*\([[:digit:]][[:graph:]]*\).*/\1/I" )
         [ "$DISTRIB_RELEASE" = "$TMP_DISTRIB_DESC" ]                          \
             || [ -z "$DISTRIB_RELEASE" ]                                      \
             && DISTRIB_RELEASE=$MSG_NA
@@ -361,7 +361,7 @@ DisplayCodename() {
     if [ -z "$DISTRIB_CODENAME" ]
     then                       # parse the "$DISTRIB_DESCRIPTION" string
         DISTRIB_CODENAME=$(echo "$TMP_DISTRIB_DESC" |                         \
-                           sed -e "s/.*$DESCSTR_DELI.*(\(.*\)).*/\1/")
+                           sed -e "s/.*$DESCSTR_DELI.*(\(.*\)).*/\1/I")
         [ "$DISTRIB_CODENAME" = "$TMP_DISTRIB_DESC" ]                         \
             || [ -z "$DISTRIB_CODENAME" ]                                     \
             && DISTRIB_CODENAME=$MSG_NA