firejail.vim: use sed instead of rg

To avoid depending on an extra package without need.

Commands used to search and replace:

    $ f=contrib/vim/syntax/firejail.vim; \
      printf '%s\n' "$(sed -E \
        "s|rg -o '([^']+)' -r '\\\$1'|sed -En 's/.*\\1.*/\\\\1/p'|" "$f")" >"$f"

Note: `sed -E` is not in POSIX.1-2017 (Issue 7), but it has been
accepted into the upcoming POSIX standard version[1] and is supported by
at least GNU, busybox and OpenBSD grep.

Added on commit a1cc4a5 ("Add vim syntax and ftdetect files (netblue30#2679)",
2019-05-06).

[1] https://www.austingroupbugs.net/view.php?id=528

contrib/vim/syntax/firejail.vim

@@ -27,11 +27,11 @@ syn match fjProtocolList /,/ nextgroup=fjProtocol contained
 " Generate list with: sed -n 's/{\s\+"\([^"]\+\)",.*},/\1/p' src/include/syscall*.h | sort -u | tr '\n' ' '
 syn keyword fjSyscall _llseek _newselect _sysctl accept accept4 access acct add_key adjtimex afs_syscall alarm arch_prctl arm_fadvise64_64 arm_sync_file_range bdflush bind bpf break brk capget capset chdir chmod chown chown32 chroot clock_adjtime clock_adjtime64 clock_getres clock_getres_time64 clock_gettime clock_gettime64 clock_nanosleep clock_nanosleep_time64 clock_settime clock_settime64 clone clone3 close connect copy_file_range creat create_module delete_module dup dup2 dup3 epoll_create epoll_create1 epoll_ctl epoll_ctl_old epoll_pwait epoll_wait epoll_wait_old eventfd eventfd2 execve execveat exit exit_group faccessat faccessat2 fadvise64 fadvise64_64 fallocate fanotify_init fanotify_mark fchdir fchmod fchmodat fchown fchown32 fchownat fcntl fcntl64 fdatasync fgetxattr finit_module flistxattr flock fork fremovexattr fsconfig fsetxattr fsmount fsopen fspick fstat fstat64 fstatat64 fstatfs fstatfs64 fsync ftime ftruncate ftruncate64 futex futex_time64 futimesat getcpu getcwd getdents getdents64 getegid getegid32 geteuid geteuid32 getgid getgid32 getgroups getgroups32 getitimer get_kernel_syms get_mempolicy getpeername getpgid getpgrp getpid getpmsg getppid getpriority getrandom getresgid getresgid32 getresuid getresuid32 getrlimit get_robust_list getrusage getsid getsockname getsockopt get_thread_area gettid gettimeofday getuid getuid32 getxattr gtty idle init_module inotify_add_watch inotify_init inotify_init1 inotify_rm_watch io_cancel ioctl io_destroy io_getevents ioperm io_pgetevents io_pgetevents_time64 iopl ioprio_get ioprio_set io_setup io_submit io_uring_enter io_uring_register io_uring_setup ipc kcmp kexec_file_load kexec_load keyctl kill lchown lchown32 lgetxattr link linkat listen listxattr llistxattr lock lookup_dcookie lremovexattr lseek lsetxattr lstat lstat64 madvise mbind membarrier memfd_create migrate_pages mincore mkdir mkdirat mknod mknodat mlock mlock2 mlockall mmap mmap2 modify_ldt mount move_mount move_pages mprotect mpx mq_getsetattr mq_notify mq_open mq_timedreceive mq_timedreceive_time64 mq_timedsend mq_timedsend_time64 mq_unlink mremap msgctl msgget msgrcv msgsnd msync munlock munlockall munmap name_to_handle_at nanosleep newfstatat nfsservctl nice oldfstat oldlstat oldolduname oldstat olduname open openat open_by_handle_at open_tree pause pciconfig_iobase pciconfig_read pciconfig_write perf_event_open personality pidfd_open pidfd_send_signal pipe pipe2 pivot_root pkey_alloc pkey_free pkey_mprotect poll ppoll ppoll_time64 prctl pread64 preadv preadv2 prlimit64 process_vm_readv process_vm_writev prof profil pselect6 pselect6_time64 ptrace putpmsg pwrite64 pwritev pwritev2 query_module quotactl read readahead readdir readlink readlinkat readv reboot recv recvfrom recvmmsg recvmmsg_time64 recvmsg remap_file_pages removexattr rename renameat renameat2 request_key restart_syscall rmdir rseq rt_sigaction rt_sigpending rt_sigprocmask rt_sigqueueinfo rt_sigreturn rt_sigsuspend rt_sigtimedwait rt_sigtimedwait_time64 rt_tgsigqueueinfo sched_getaffinity sched_getattr sched_getparam sched_get_priority_max sched_get_priority_min sched_getscheduler sched_rr_get_interval sched_rr_get_interval_time64 sched_setaffinity sched_setattr sched_setparam sched_setscheduler sched_yield seccomp security select semctl semget semop semtimedop semtimedop_time64 send sendfile sendfile64 sendmmsg sendmsg sendto setdomainname setfsgid setfsgid32 setfsuid setfsuid32 setgid setgid32 setgroups setgroups32 sethostname setitimer set_mempolicy setns setpgid setpriority setregid setregid32 setresgid setresgid32 setresuid setresuid32 setreuid setreuid32 setrlimit set_robust_list setsid setsockopt set_thread_area set_tid_address settimeofday setuid setuid32 setxattr sgetmask shmat shmctl shmdt shmget shutdown sigaction sigaltstack signal signalfd signalfd4 sigpending sigprocmask sigreturn sigsuspend socket socketcall socketpair splice ssetmask stat stat64 statfs statfs64 statx stime stty swapoff swapon symlink symlinkat sync sync_file_range sync_file_range2 syncfs syscall sysfs sysinfo syslog tee tgkill time timer_create timer_delete timerfd_create timerfd_gettime timerfd_gettime64 timerfd_settime timerfd_settime64 timer_getoverrun timer_gettime timer_gettime64 timer_settime timer_settime64 times tkill truncate truncate64 tuxcall ugetrlimit ulimit umask umount umount2 uname unlink unlinkat unshare uselib userfaultfd ustat utime utimensat utimensat_time64 utimes vfork vhangup vm86 vm86old vmsplice vserver wait4 waitid waitpid write writev nextgroup=fjSyscallErrno contained
 " Syscall groups grabbed from: src/fseccomp/syscall.c
-" Generate list with: rg -o '"@([^",]+)' -r '$1' src/lib/syscall.c | sort -u | tr '\n' '|'
+" Generate list with: sed -En 's/.*"@([^",]+).*/\1/p' src/lib/syscall.c | sort -u | tr '\n' '|'
 syn match fjSyscall /\v\@(aio|basic-io|chown|clock|cpu-emulation|debug|default|default-keep|default-nodebuggers|file-system|io-event|ipc|keyring|memlock|module|mount|network-io|obsolete|privileged|process|raw-io|reboot|resources|setuid|signal|swap|sync|system-service|timer)>/ nextgroup=fjSyscallErrno contained
 syn match fjSyscall /\$[0-9]\+/ nextgroup=fjSyscallErrno contained
 " Errnos grabbed from: src/fseccomp/errno.c
-" Generate list with: rg -o '"(E[^"]+)' -r '$1' src/lib/errno.c | sort -u | tr '\n' '|'
+" Generate list with: sed -En 's/.*"(E[^"]+).*/\1/p' src/lib/errno.c | sort -u | tr '\n' '|'
 syn match fjSyscallErrno /\v(:(E2BIG|EACCES|EADDRINUSE|EADDRNOTAVAIL|EADV|EAFNOSUPPORT|EAGAIN|EALREADY|EBADE|EBADF|EBADFD|EBADMSG|EBADR|EBADRQC|EBADSLT|EBFONT|EBUSY|ECANCELED|ECHILD|ECHRNG|ECOMM|ECONNABORTED|ECONNREFUSED|ECONNRESET|EDEADLK|EDEADLOCK|EDESTADDRREQ|EDOM|EDOTDOT|EDQUOT|EEXIST|EFAULT|EFBIG|EHOSTDOWN|EHOSTUNREACH|EHWPOISON|EIDRM|EILSEQ|EINPROGRESS|EINTR|EINVAL|EIO|EISCONN|EISDIR|EISNAM|EKEYEXPIRED|EKEYREJECTED|EKEYREVOKED|EL2HLT|EL2NSYNC|EL3HLT|EL3RST|ELIBACC|ELIBBAD|ELIBEXEC|ELIBMAX|ELIBSCN|ELNRNG|ELOOP|EMEDIUMTYPE|EMFILE|EMLINK|EMSGSIZE|EMULTIHOP|ENAMETOOLONG|ENAVAIL|ENETDOWN|ENETRESET|ENETUNREACH|ENFILE|ENOANO|ENOATTR|ENOBUFS|ENOCSI|ENODATA|ENODEV|ENOENT|ENOEXEC|ENOKEY|ENOLCK|ENOLINK|ENOMEDIUM|ENOMEM|ENOMSG|ENONET|ENOPKG|ENOPROTOOPT|ENOSPC|ENOSR|ENOSTR|ENOSYS|ENOTBLK|ENOTCONN|ENOTDIR|ENOTEMPTY|ENOTNAM|ENOTRECOVERABLE|ENOTSOCK|ENOTSUP|ENOTTY|ENOTUNIQ|ENXIO|EOPNOTSUPP|EOVERFLOW|EOWNERDEAD|EPERM|EPFNOSUPPORT|EPIPE|EPROTO|EPROTONOSUPPORT|EPROTOTYPE|ERANGE|EREMCHG|EREMOTE|EREMOTEIO|ERESTART|ERFKILL|EROFS|ESHUTDOWN|ESOCKTNOSUPPORT|ESPIPE|ESRCH|ESRMNT|ESTALE|ESTRPIPE|ETIME|ETIMEDOUT|ETOOMANYREFS|ETXTBSY|EUCLEAN|EUNATCH|EUSERS|EWOULDBLOCK|EXDEV|EXFULL)>)?/ nextgroup=fjSyscallList contained
 syn match fjSyscallList /,/ nextgroup=fjSyscall contained
 
@@ -47,13 +47,13 @@ syn keyword fjLo lo contained
 syn keyword fjFilter filter contained
 
 " Variable names grabbed from: src/firejail/macros.c
-" Generate list with: rg -o '\$\{([^}]+)\}' -r '$1' src/firejail/macros.c | sort -u | tr '\n' '|'
+" Generate list with: sed -En 's/.*\$\{([^}]+)\}.*/\1/p' src/firejail/macros.c | sort -u | tr '\n' '|'
 syn match fjVar /\v\$\{(CFG|DESKTOP|DOCUMENTS|DOWNLOADS|HOME|MUSIC|PATH|PICTURES|RUNUSER|VIDEOS)}/
 
 " Commands grabbed from: src/firejail/profile.c
-" Generate list with: { rg -o 'strn?cmp\(ptr, "([^"]+) "' -r '$1' src/firejail/profile.c; echo private-lib; } | grep -Ev '^(include|ignore|caps\.drop|caps\.keep|protocol|restrict-namespaces|seccomp|seccomp\.drop|seccomp\.keep|env|rmenv|net|ip)$' | sort -u | tr '\n' '|' # private-lib is special-cased in the code and doesn't match the regex; grep-ed patterns are handled later with 'syn match nextgroup=' directives (except for include which is special-cased as a fjCommandNoCond keyword)
+" Generate list with: { sed -En 's/.*strn?cmp\(ptr, "([^"]+) ".*/\1/p' src/firejail/profile.c; echo private-lib; } | grep -Ev '^(include|ignore|caps\.drop|caps\.keep|protocol|restrict-namespaces|seccomp|seccomp\.drop|seccomp\.keep|env|rmenv|net|ip)$' | sort -u | tr '\n' '|' # private-lib is special-cased in the code and doesn't match the regex; grep-ed patterns are handled later with 'syn match nextgroup=' directives (except for include which is special-cased as a fjCommandNoCond keyword)
 syn match fjCommand /\v(apparmor|bind|blacklist|blacklist-nolog|cpu|defaultgw|dns|hostname|hosts-file|ip6|iprange|join-or-start|mac|mkdir|mkfile|mtu|name|netfilter|netfilter6|netmask|nice|noblacklist|noexec|nowhitelist|overlay-named|private|private-bin|private-cwd|private-etc|private-home|private-lib|private-opt|private-srv|read-only|read-write|rlimit-as|rlimit-cpu|rlimit-fsize|rlimit-nofile|rlimit-nproc|rlimit-sigpending|timeout|tmpfs|veth-name|whitelist|xephyr-screen) / skipwhite contained
-" Generate list with: rg -o 'strn?cmp\(ptr, "([^ "]*[^ ])"' -r '$1' src/firejail/profile.c | grep -Ev '^(include|rlimit|quiet)$' | sed 's/\./\\./' | sort -u | tr '\n' '|' # include/rlimit are false positives, quiet is special-cased below
+" Generate list with: sed -En 's/.*strn?cmp\(ptr, "([^ "]*[^ ])".*/\1/p' src/firejail/profile.c | grep -Ev '^(include|rlimit|quiet)$' | sed 's/\./\\./' | sort -u | tr '\n' '|' # include/rlimit are false positives, quiet is special-cased below
 syn match fjCommand /\v(allow-debuggers|allusers|apparmor|caps|deterministic-exit-code|deterministic-shutdown|disable-mnt|ipc-namespace|keep-config-pulse|keep-dev-shm|keep-fd|keep-var-tmp|machine-id|memory-deny-write-execute|netfilter|no3d|noautopulse|nodbus|nodvd|nogroups|noinput|nonewprivs|noprinters|noroot|nosound|notv|nou2f|novideo|overlay|overlay-tmpfs|private|private-cache|private-cwd|private-dev|private-lib|private-tmp|seccomp|seccomp\.32|seccomp\.block-secondary|tracelog|writable-etc|writable-run-user|writable-var|writable-var-log|x11)$/ contained
 syn match fjCommand /ignore / nextgroup=fjCommand,fjCommandNoCond skipwhite contained
 syn match fjCommand /caps\.drop / nextgroup=fjCapability,fjAll skipwhite contained