GCloud SDK过滤器（--filter）选项大小写敏感与文档描述不符的问题求助

大家好，我最近碰到一个很困惑的问题，GCloud SDK的--filter选项表现出来的大小写敏感性和官方文档描述的不一样，想请各位帮忙分析下。

首先先说明我的GCloud SDK版本信息：

Google Cloud SDK 425.0.0
bq 2.0.89
core 2023.03.31
gcloud-crc32c 1.0.0
gsutil 5.21

按照官方文档里gcloud topic filters中“key : simple-pattern”章节的说明，过滤器的匹配应该总是大小写不敏感的，但我实际测试时却发现它是大小写敏感的。

我用gcloud compute images list命令做了测试，分别用小写的server和大写的Server作为过滤条件，再通过wc统计结果数量：

gcloud compute images list --format="table(name,description)" --filter="description:server" | wc
# 输出：10     145    1297

gcloud compute images list --format="table(name,description)" --filter="description:Server" | wc
# 输出：56     818    7713

从具体的输出结果也能看出差异：
当用description:server时，只返回了包含小写server的Ubuntu镜像：

NAME                                     DESCRIPTION
ubuntu-pro-1604-xenial-v20231213         Canonical, Ubuntu, 16.04 LTS Pro Server, amd64 xenial pro server image built on 2023-12-13
ubuntu-pro-1804-bionic-arm64-v20231213a  Canonical, Ubuntu, 18.04 LTS Pro Server, arm64 bionic pro server image built on 2023-12-13
ubuntu-pro-1804-bionic-v20231213a        Canonical, Ubuntu, 18.04 LTS Pro Server, amd64 bionic pro server image built on 2023-12-13
ubuntu-pro-2004-focal-arm64-v20231213    Canonical, Ubuntu, 20.04 LTS Pro Server, arm64 focal pro server image built on 2023-12-13
ubuntu-pro-2004-focal-v20231213          Canonical, Ubuntu, 20.04 LTS Pro Server, amd64 focal pro server image built on 2023-12-13
ubuntu-pro-2204-jammy-arm64-v20231213a   Canonical, Ubuntu, 22.04 LTS Pro Server, arm64 jammy pro server image built on 2023-12-13
ubuntu-pro-2204-jammy-v20231213a         Canonical, Ubuntu, 22.04 LTS Pro Server, amd64 jammy pro server image built on 2023-12-13
ubuntu-pro-fips-1804-bionic-v20230530    Canonical, Ubuntu, 18.04 LTS Pro FIPS Server, amd64 bionic pro fips server image built on 2023-05-30, supports Shielded VM features
ubuntu-pro-fips-2004-focal-v20231022     Canonical, Ubuntu, 20.04 LTS Pro FIPS Server, amd64 focal pro fips server image built on 2023-10-22

而用description:Server时，除了上面的Ubuntu镜像（因为它们的描述里同时有大写Server和小写server），还返回了大量SUSE、Windows和SQL Server相关的镜像：

NAME                                           DESCRIPTION
sles-12-sp5-v20231108-x86-64                   SUSE, SUSE Linux Enterprise Server 12 SP5, x86_64, built on 20231108
sles-15-sp5-v20231214-arm64                    SUSE, SUSE Linux Enterprise Server 15 SP5, arm64, built on 20231214
sles-15-sp5-v20231214-x86-64                   SUSE, SUSE Linux Enterprise Server 15 SP5, x86_64, built on 20231214
sles-12-sp5-sap-v20231019-x86-64               SUSE, SUSE Linux Enterprise Server 12 SP5 for SAP, x86_64, built on 20231019
sles-15-sp2-sap-v20231214-x86-64               SUSE, SUSE Linux Enterprise Server 15 SP2 for SAP, x86_64, built on 20231214
sles-15-sp3-sap-v20231214-x86-64               SUSE, SUSE Linux Enterprise Server 15 SP3 for SAP, x86_64, built on 20231214
sles-15-sp4-sap-v20231214-x86-64               SUSE, SUSE Linux Enterprise Server 15 SP4 for SAP, x86_64, built on 20231214
sles-15-sp5-sap-v20231214-x86-64               SUSE, SUSE Linux Enterprise Server 15 SP5 for SAP, x86_64, built on 20231214
sles-sap-15-sp4-hardened-v20231214-x86-64      SUSE, SUSE Linux Enterprise Server 15 SP4 for SAP hardened with security features, x86_64, built on 20231214
sles-sap-15-sp5-hardened-v20231214-x86-64      SUSE, SUSE Linux Enterprise Server 15 SP5 for SAP hardened with security features, x86_64, built on 20231214
ubuntu-pro-1604-xenial-v20231213               Canonical, Ubuntu, 16.04 LTS Pro Server, amd64 xenial pro server image built on 2023-12-13
ubuntu-pro-1804-bionic-arm64-v20231213a        Canonical, Ubuntu, 18.04 LTS Pro Server, arm64 bionic pro server image built on 2023-12-13
ubuntu-pro-1804-bionic-v20231213a              Canonical, Ubuntu, 18.04 LTS Pro Server, amd64 bionic pro server image built on 2023-12-13
ubuntu-pro-2004-focal-arm64-v20231213          Canonical, Ubuntu, 20.04 LTS Pro Server, arm64 focal pro server image built on 2023-12-13
ubuntu-pro-2004-focal-v20231213                Canonical, Ubuntu, 20.04 LTS Pro Server, amd64 focal pro server image built on 2023-12-13
ubuntu-pro-2204-jammy-arm64-v20231213a         Canonical, Ubuntu, 22.04 LTS Pro Server, arm64 jammy pro server image built on 2023-12-13
ubuntu-pro-2204-jammy-v20231213a               Canonical, Ubuntu, 22.04 LTS Pro Server, amd64 jammy pro server image built on 2023-12-13
ubuntu-pro-fips-1804-bionic-v20230530          Canonical, Ubuntu, 18.04 LTS Pro FIPS Server, amd64 bionic pro fips server image built on 2023-05-30, supports Shielded VM features
ubuntu-pro-fips-2004-focal-v20231022           Canonical, Ubuntu, 20.04 LTS Pro FIPS Server, amd64 focal pro fips server image built on 2023-10-22
sql-2014-enterprise-windows-2016-dc-v20231213  Microsoft, SQL Server 2014 Enterprise, on Windows Server 2016 Datacenter, x64 built on 20231213
windows-server-2016-dc-core-v20231213          Microsoft, Windows Server, 2016 Datacenter Core, Server Core, x64 built on 20231213
windows-server-2016-dc-v20231213               Microsoft, Windows Server, 2016 Datacenter, Server with Desktop Experience, x64 built on 20231213
windows-server-2019-dc-core-v20231213          Microsoft, Windows Server, 2019 Datacenter Core, Server Core, x64 built on 20231213
windows-server-2019-dc-v20231213               Microsoft, Windows Server, 2019 Datacenter, Server with Desktop Experience, x64 built on 20231213
windows-server-2022-dc-core-v20231213          Microsoft, Windows Server, 2022 Datacenter Core, Server Core, x64 built on 20231213
windows-server-2022-dc-v20231213               Microsoft, Windows Server, 2022 Datacenter, Server with Desktop Experience, x64 built on 20231213
sql-2016-enterprise-windows-2016-dc-v20231213  Microsoft, SQL Server 2016 Enterprise, on Windows Server 2016 Datacenter, x64 built on 20231213
sql-2016-enterprise-windows-2019-dc-v20231213  Microsoft, SQL Server 2016 Enterprise, on Windows Server 2019 Datacenter, x64 built on 20231213
sql-2016-standard-windows-2016-dc-v20231213    Microsoft, SQL Server 2016 Standard, on Windows Server 2016 Datacenter, x64 built on 20231213
sql-2016-standard-windows-2019-dc-v20231213    Microsoft, SQL Server 2016 Standard, on Windows Server 2019 Datacenter, x64 built on 20231213
sql-2016-web-windows-2016-dc-v20231213         Microsoft, SQL Server 2016 Web, on Windows Server 2016 Datacenter, x64 built on 20231213
sql-2016-web-windows-2019-dc-v20231213         Microsoft, SQL Server 2016 Web, on Windows Server 2019 Datacenter, x64 built on 20231213
sql-2017-enterprise-windows-2016-dc-v20231213  Microsoft, SQL Server 2017 Enterprise, on Windows Server 2016 Datacenter, x64 built on 20231213
sql-2017-enterprise-windows-2019-dc-v20231213  Microsoft, SQL Server 2017 Enterprise, on Windows Server 2019 Datacenter, x64 built on 20231213
sql-2017-enterprise-windows-2022-dc-v20231213  Microsoft, SQL Server 2017 Enterprise, on Windows Server 2022 Datacenter, x64 built on 20231213
sql-2017-express-windows-2016-dc-v20231213     Microsoft, SQL Server 2017 Express, on Windows Server 2016 Datacenter, x64 built on 20231213
sql-2017-express-windows-2019-dc-v20231213     Microsoft, SQL Server 2017 Express, on Windows Server 2019 Datacenter, x64 built on 20231213
sql-2017-standard-windows-2016-dc-v20231213    Microsoft, SQL Server 2017 Standard, on Windows Server 2016 Datacenter, x64 built on 20231213
sql-2017-standard-windows-2019-dc-v20231213    Microsoft, SQL Server 2017 Standard, on Windows Server 2019 Datacenter, x64 built on 20231213
sql-2017-standard-windows-2022-dc-v20231213    Microsoft, SQL Server 2017 Standard, on Windows Server 2022 Datacenter, x64 built on 20231213
sql-2017-web-windows-2016-dc-v20231213         Microsoft, SQL Server 2017 Web, on Windows Server 2016 Datacenter, x64 built on 20231213
sql-2017-web-windows-2019-dc-v20231213         Microsoft, SQL Server 2017 Web, on Windows Server 2019 Datacenter, x64 built on 20231213
sql-2017-web-windows-2022-dc-v20231213         Microsoft, SQL Server 2017 Web, on Windows Server 2022 Datacenter, x64 built on 20231213
sql-2019-enterprise-windows-2019-dc-v20231213  Microsoft, SQL Server 2019 Enterprise, on Windows Server 2019 Datacenter, x64 built on 20231213
sql-2019-enterprise-windows-2022-dc-v20231213  Microsoft, SQL Server 2019 Enterprise, on Windows Server 2022 Datacenter, x64 built on 20231213
sql-2019-standard-windows-2019-dc-v20231213    Microsoft, SQL Server 2019 Standard, on Windows Server 2019 Datacenter, x64 built on 20231213
sql-2019-standard-windows-2022-dc-v20231213    Microsoft, SQL Server 2019 Standard, on Windows Server 2022 Datacenter, x64 built on 20231213
sql-2019-web-windows-2019-dc-v20231213         Microsoft, SQL Server 2019 Web, on Windows Server 2019 Datacenter, x64 built on 20231213
sql-2019-web-windows-2022-dc-v20231213         Microsoft, SQL Server 2019 Web, on Windows Server 2022 Datacenter, x64 built on 20231213
sql-2022-enterprise-windows-2019-dc-v20231213  Microsoft, SQL Server 2022 Enterprise, on Windows Server 2019 Datacenter, x64 built on 20231213
sql-2022-enterprise-windows-2022-dc-v20231213  Microsoft, SQL Server 2022 Enterprise, on Windows Server 2022 Datacenter, x64 built on 20231213
sql-2022-standard-windows-2019-dc-v20231