When the system and x-cmd locale are set to Chinese (zh_CN.UTF-8 or zh), attempting to use Tab completion for the x command causes a critical performance issue.
After typing x (x and a space) and pressing the Tab key, the system immediately freezes or becomes unresponsive. System monitoring tools (like htop) show that a process related to x-cmd's is rapidly consuming all available memory until it hits 100%. After a long delay of several seconds or more, once the memory is maxed out, the completion suggestions finally appear.
The memory is then released, and the system returns to normal.
This issue makes the Tab completion feature unusable in a Chinese language environment.
- name: x-cmd
info: |-
___X_CMD_PKG_VERSION: v0.1.2
___X_CMD_WEBSRC_REGION: cn
___X_CMD_LANG: zh
==== x-cmd version ====
version: .04b1d1b7
tag: v0.6.10
date: 2025-08-16 03:06:11+0000
sum: 04b1d1b72e4a5dce13112d7a0ce4da7d8b46df549a71ecfea5479e046004de707eac3ba2e8b5690cff752ba44244c7ffbd377fd172a986adc3954d95b810e5dd
==== root ls ====
V: <<HOME-STRING>>/.x-cmd.root/v
ROOT: <<HOME-STRING>>/.x-cmd.root
CODE: <<HOME-STRING>>/.x-cmd.root/v/.04b1d1b7
ADV: <<HOME-STRING>>/.x-cmd.root/v/.04b1d1b7/adv
MOD: <<HOME-STRING>>/.x-cmd.root/v/.04b1d1b7/mod
METADATA: <<HOME-STRING>>/.x-cmd.root/v/.04b1d1b7/.x-cmd/metadata
GDATA: <<HOME-STRING>>/.x-cmd.root/global/data
DATA: <<HOME-STRING>>/.x-cmd.root/local/data
USR: <<HOME-STRING>>/.x-cmd.root/local/usr
ART: <<HOME-STRING>>/.x-cmd.root/local/art
GCFG: <<HOME-STRING>>/.x-cmd.root/global/cfg
CFG: <<HOME-STRING>>/.x-cmd.root/local/cfg
LOG: <<HOME-STRING>>/.x-cmd.root/local/log
CACHE: <<HOME-STRING>>/.x-cmd.root/local/cache
TMP: <<HOME-STRING>>/.x-cmd.root/local/tmp
SHARED: <<HOME-STRING>>/.x-cmd.root/global/shared
==== boot rc ====
- name: shell
info: bash
- name: awk
info: mawk 1.3.4 20250131
- name: sed
info: |-
/usr/bin/sed (GNU sed) 4.9
Packaged by Debian
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Jay Fenlason, Tom Lord, Ken Pizzini,
Paolo Bonzini, Jim Meyering, and Assaf Gordon.
This sed program was built with SELinux support.
SELinux is disabled on this system.
GNU sed home page: <https://www.gnu.org/software/sed/>.
General help using GNU software: <https://www.gnu.org/gethelp/>.
E-mail bug reports to: <[email protected]>.
- name: grep
info: |-
grep (GNU grep) 3.11
Copyright (C) 2023 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Mike Haertel and others; see
<https://git.savannah.gnu.org/cgit/grep.git/tree/AUTHORS>.
grep -P uses PCRE2 10.45 2025-02-05
- name: find
info: |-
find (GNU findutils) 4.10.0
Copyright (C) 2024 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Eric B. Decker, James Youngman, and Kevin Dalley.
Features enabled: D_TYPE O_NOFOLLOW(enabled) LEAF_OPTIMISATION FTS(FTS_CWDFD) CBO(level=1)
- name: busybox
info: |-
BusyBox v1.37.0 (Debian 1:1.37.0-6+b3) multi-call binary.
BusyBox is copyrighted by many authors between 1998-2015.
Licensed under GPLv2. See source distribution for detailed
copyright notices.
Usage: busybox [function [arguments]...]
or: busybox --list[-full]
or: busybox --install [-s] [DIR]
or: function [arguments]...
BusyBox is a multi-call binary that combines many common Unix
utilities into a single executable. Most people will create a
link to busybox for each function they wish to use and BusyBox
will act like whatever it was invoked as.
Currently defined functions:
[, [[, acpid, adjtimex, ar, arch, arp, arping, ascii, ash, awk, base64,
basename, bc, blkdiscard, blkid, blockdev, brctl, bunzip2, bzcat,
bzip2, cal, cat, chgrp, chmod, chown, chroot, chvt, clear, cmp, cp,
cpio, crc32, crond, crontab, cttyhack, cut, date, dc, dd, deallocvt,
depmod, devmem, df, diff, dirname, dmesg, dnsdomainname, dos2unix,
dpkg, dpkg-deb, du, dumpkmap, dumpleases, echo, ed, egrep, env, expand,
expr, factor, fallocate, false, fatattr, fdisk, fgrep, find, findfs,
fold, free, freeramdisk, fsfreeze, fstrim, ftpget, ftpput, getfattr,
getopt, getty, grep, groups, gunzip, gzip, halt, head, hexdump, hostid,
hostname, httpd, hwclock, i2cdetect, i2cdump, i2cget, i2cset,
i2ctransfer, id, ifconfig, ifdown, ifup, init, insmod, install, ionice,
ip, ipcalc, kill, killall, klogd, last, less, link, linux32, linux64,
linuxrc, ln, loadfont, loadkmap, logger, login, logname, logread,
losetup, ls, lsmod, lsscsi, lzcat, lzma, lzop, md5sum, mdev, microcom,
mim, mkdir, mkdosfs, mke2fs, mkfifo, mknod, mkpasswd, mkswap, mktemp,
modinfo, modprobe, more, mount, mt, mv, nameif, nbd-client, nc,
netstat, nl, nologin, nproc, nsenter, nslookup, nuke, od, openvt,
partprobe, passwd, paste, patch, pidof, ping, ping6, pivot_root,
poweroff, printf, ps, pwd, rdate, readlink, realpath, reboot, renice,
reset, resume, rev, rm, rmdir, rmmod, route, rpm, rpm2cpio, run-init,
run-parts, sed, seq, setkeycodes, setpriv, setsid, sh, sha1sum,
sha256sum, sha3sum, sha512sum, shred, shuf, sleep, sort, ssl_client,
start-stop-daemon, stat, strings, stty, su, sulogin, svc, svok,
swapoff, swapon, switch_root, sync, sysctl, syslogd, tac, tail, tar,
taskset, tc, tee, telnet, test, tftp, time, timeout, top, touch, tr,
traceroute, traceroute6, true, truncate, ts, tty, tunctl, ubirename,
udhcpc, udhcpc6, udhcpd, uevent, umount, uname, uncompress, unexpand,
uniq, unix2dos, unlink, unlzma, unshare, unxz, unzip, uptime, usleep,
uudecode, uuencode, vconfig, vi, w, watch, watchdog, wc, wget, which,
who, whoami, xargs, xxd, xz, xzcat, yes, zcat
- name: curl
info: |-
curl 8.14.1 (x86_64-pc-linux-gnu) libcurl/8.14.1 OpenSSL/3.5.1 zlib/1.3.1 brotli/1.1.0 zstd/1.5.7 libidn2/2.3.8 libpsl/0.21.2 libssh2/1.11.1 nghttp2/1.64.0 nghttp3/1.8.0 librtmp/2.3 OpenLDAP/2.6.10
Release-Date: 2025-06-04, security patched: 8.14.1-2
Protocols: dict file ftp ftps gopher gophers http https imap imaps ipfs ipns ldap ldaps mqtt pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp ws wss
Features: alt-svc AsynchDNS brotli GSS-API HSTS HTTP2 HTTP3 HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM PSL SPNEGO SSL threadsafe TLS-SRP UnixSockets zstd
- name: wget
info: |-
GNU Wget 1.25.0 built on linux-gnu.
-cares +digest -gpgme +https +ipv6 +iri +large-file -metalink +nls
+ntlm +opie +psl +ssl/gnutls
Wgetrc:
/etc/wgetrc (system)
Locale:
/usr/share/locale
Compile:
gcc -DHAVE_CONFIG_H -DSYSTEM_WGETRC="/etc/wgetrc"
-DLOCALEDIR="/usr/share/locale" -I. -I../../src -I../lib
-I../../lib -Wdate-time -D_FORTIFY_SOURCE=2
-I/usr/include/p11-kit-1 -DHAVE_LIBGNUTLS -DNDEBUG -g -O2
-Werror=implicit-function-declaration
-ffile-prefix-map=/build/reproducible-path/wget-1.25.0=.
-fstack-protector-strong -fstack-clash-protection -Wformat
-Werror=format-security -fcf-protection -DNO_SSLv2
Link:
gcc -I/usr/include/p11-kit-1 -DHAVE_LIBGNUTLS -DNDEBUG -g -O2
-Werror=implicit-function-declaration
-ffile-prefix-map=/build/reproducible-path/wget-1.25.0=.
-fstack-protector-strong -fstack-clash-protection -Wformat
-Werror=format-security -fcf-protection -DNO_SSLv2 -Wl,-z,relro
-Wl,-z,now -lpcre2-8 -luuid -lidn2 -lnettle -lgnutls -lz -lpsl
../lib/libgnu.a
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://www.gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Originally written by Hrvoje Niksic <[email protected]>.
Please send bug reports and questions to <[email protected]>.
- name: yq
info:
- name: jq
info:
- name: fzf
info:
- name: release
info: |-
debian
"13"1.Set the system locale to zh_CN.UTF-8. (e.g., export LANG=zh_CN.UTF-8).
2.Open a new terminal session (the issue occurs in both bash and zsh).
3.Type x (the letter 'x' followed by a space).
4.Press the Tab key.
5.Observe the immediate system freeze and the corresponding memory usage spike.
The root cause is definitively tied to the system locale. If the locale is temporarily changed to English (export LANG=en_US.UTF-8) in the same terminal session, the Tab completion works perfectly, with no delay or memory issues.
This issue is shell-agnostic. It has been reproduced in both bash and zsh.
✅ Checklist
💬 Describe the bug
When the system and x-cmd locale are set to Chinese (zh_CN.UTF-8 or zh), attempting to use Tab completion for the x command causes a critical performance issue.
After typing x (x and a space) and pressing the Tab key, the system immediately freezes or becomes unresponsive. System monitoring tools (like htop) show that a process related to x-cmd's is rapidly consuming all available memory until it hits 100%. After a long delay of several seconds or more, once the memory is maxed out, the completion suggestions finally appear.
The memory is then released, and the system returns to normal.
This issue makes the Tab completion feature unusable in a Chinese language environment.
📄 System
🔎 To Reproduce
1.Set the system locale to zh_CN.UTF-8. (e.g., export LANG=zh_CN.UTF-8).
2.Open a new terminal session (the issue occurs in both bash and zsh).
3.Type x (the letter 'x' followed by a space).
4.Press the Tab key.
5.Observe the immediate system freeze and the corresponding memory usage spike.
🗂️ Additional Context
The root cause is definitively tied to the system locale. If the locale is temporarily changed to English (export LANG=en_US.UTF-8) in the same terminal session, the Tab completion works perfectly, with no delay or memory issues.
This issue is shell-agnostic. It has been reproduced in both bash and zsh.