Exposing dup and dup2.

* sysif.c (dup_wrap): New static function.
(sysif_init): Register dup_wrap as dupfd. The name dup
conflicts with an existing function.

* txr.1: Documented dupfd.

* txr.vim, tl.vim: Regenerated.

1 files changed, 145 insertions, 144 deletions

diff --git a/txr.vim b/txr.vim
index 890bea9e..182d3fd9 100644
--- a/txr.vim
+++ b/txr.vim
@@ -54,150 +54,151 @@ syn keyword txl_keyword contained cos count-if countq countql
 syn keyword txl_keyword contained countqual cum-norm-dist daemon dec
 syn keyword txl_keyword contained defmacro defsymacro defun defvar
 syn keyword txl_keyword contained del delay delete-package do
-syn keyword txl_keyword contained dohash downcase-str dup dwim
-syn keyword txl_keyword contained each each* empty ensure-dir
-syn keyword txl_keyword contained env env-fbind env-hash env-vbind
-syn keyword txl_keyword contained eq eql equal errno
-syn keyword txl_keyword contained error eval evenp exit
-syn keyword txl_keyword contained exp expt exptmod false
-syn keyword txl_keyword contained fbind fboundp fifth filter-equal
-syn keyword txl_keyword contained filter-string-tree finalize find find-if
-syn keyword txl_keyword contained find-max find-min find-package first
-syn keyword txl_keyword contained fixnump flatten flatten* flet
-syn keyword txl_keyword contained flip flo-int flo-str floatp
-syn keyword txl_keyword contained floor flush-stream for for*
-syn keyword txl_keyword contained force fork format fourth
-syn keyword txl_keyword contained fun func-get-env func-get-form func-set-env
-syn keyword txl_keyword contained functionp gcd gen generate
-syn keyword txl_keyword contained gensym gequal get-byte get-char
-syn keyword txl_keyword contained get-error get-error-str get-hash-userdata get-line
-syn keyword txl_keyword contained get-lines get-list-from-stream get-sig-handler get-string
-syn keyword txl_keyword contained get-string-from-stream gethash getitimer getpid
-syn keyword txl_keyword contained getppid giterate glob glob-altdirfunc
-syn keyword txl_keyword contained glob-brace glob-err glob-mark glob-nocheck
-syn keyword txl_keyword contained glob-noescape glob-nomagic glob-nosort glob-onlydir
-syn keyword txl_keyword contained glob-period glob-tilde glob-tilde-check greater
-syn keyword txl_keyword contained group-by gun hash hash-alist
-syn keyword txl_keyword contained hash-construct hash-count hash-diff hash-eql
-syn keyword txl_keyword contained hash-equal hash-isec hash-keys hash-pairs
-syn keyword txl_keyword contained hash-uni hash-update hash-update-1 hash-values
-syn keyword txl_keyword contained hashp html-decode html-encode iapply
-syn keyword txl_keyword contained identity ido if iff
-syn keyword txl_keyword contained iffi iflet ignerr in
-syn keyword txl_keyword contained inc inhash int-flo int-str
-syn keyword txl_keyword contained integerp intern interp-fun-p interpose
-syn keyword txl_keyword contained ip ipf isqrt itimer-prov
-syn keyword txl_keyword contained itimer-real itimer-virtual juxt keep-if
-syn keyword txl_keyword contained keep-if* keywordp kill labels
-syn keyword txl_keyword contained lambda last lazy-str lazy-str-force
-syn keyword txl_keyword contained lazy-str-force-upto lazy-str-get-trailing-list lazy-stream-cons lazy-stringp
-syn keyword txl_keyword contained lbind lcm lcons-fun lconsp
-syn keyword txl_keyword contained ldiff length length-list length-str
-syn keyword txl_keyword contained length-str-< length-str-<= length-str-> length-str->=
-syn keyword txl_keyword contained length-vec lequal less let
-syn keyword txl_keyword contained let* lexical-fun-p lexical-lisp1-binding lexical-var-p
-syn keyword txl_keyword contained link lisp-parse list list*
-syn keyword txl_keyword contained list-str list-vector listp log
-syn keyword txl_keyword contained log-alert log-auth log-authpriv log-cons
-syn keyword txl_keyword contained log-crit log-daemon log-debug log-emerg
-syn keyword txl_keyword contained log-err log-info log-ndelay log-notice
-syn keyword txl_keyword contained log-nowait log-odelay log-perror log-pid
-syn keyword txl_keyword contained log-user log-warning log10 log2
-syn keyword txl_keyword contained logand logior lognot logtest
-syn keyword txl_keyword contained logtrunc logxor macro-form-p macro-time
-syn keyword txl_keyword contained macroexpand macroexpand-1 macrolet major
-syn keyword txl_keyword contained make-catenated-stream make-env make-hash make-lazy-cons
-syn keyword txl_keyword contained make-like make-package make-random-state make-similar-hash
-syn keyword txl_keyword contained make-string-byte-input-stream make-string-input-stream make-string-output-stream make-strlist-output-stream
-syn keyword txl_keyword contained make-sym make-time make-time-utc make-trie
-syn keyword txl_keyword contained makedev mapcar mapcar* mapdo
-syn keyword txl_keyword contained mapf maphash mappend mappend*
-syn keyword txl_keyword contained mask match-fun match-regex match-regex-right
-syn keyword txl_keyword contained match-regst match-regst-right match-str match-str-tree
-syn keyword txl_keyword contained max member member-if memq
-syn keyword txl_keyword contained memql memqual merge min
-syn keyword txl_keyword contained minor minusp mkdir mknod
-syn keyword txl_keyword contained mkstring mod multi multi-sort
-syn keyword txl_keyword contained n-choose-k n-perm-k nconc nilf
-syn keyword txl_keyword contained none not notf nreverse
-syn keyword txl_keyword contained null nullify num-chr num-str
-syn keyword txl_keyword contained numberp oand oddp op
-syn keyword txl_keyword contained open-command open-directory open-file open-files
-syn keyword txl_keyword contained open-files* open-pipe open-process open-tail
-syn keyword txl_keyword contained openlog opip or orf
-syn keyword txl_keyword contained packagep pad partition partition*
-syn keyword txl_keyword contained partition-by perm plusp pop
-syn keyword txl_keyword contained pos pos-if pos-max pos-min
-syn keyword txl_keyword contained posq posql posqual pppred
-syn keyword txl_keyword contained ppred pprinl pprint pprof
-syn keyword txl_keyword contained pred prinl print prof
-syn keyword txl_keyword contained prog1 progn prop proper-listp
-syn keyword txl_keyword contained push pushhash put-byte put-char
-syn keyword txl_keyword contained put-line put-lines put-string put-strings
-syn keyword txl_keyword contained pwd qquote quasi quasilist
-syn keyword txl_keyword contained quote rand random random-fixnum
-syn keyword txl_keyword contained random-state-p range range* range-regex
-syn keyword txl_keyword contained rcomb read readlink real-time-stream-p
-syn keyword txl_keyword contained reduce-left reduce-right ref refset
-syn keyword txl_keyword contained regex-compile regex-parse regexp regsub
-syn keyword txl_keyword contained rehome-sym remhash remove-if remove-if*
-syn keyword txl_keyword contained remove-path remq remq* remql
-syn keyword txl_keyword contained remql* remqual remqual* rename-path
-syn keyword txl_keyword contained repeat replace replace-list replace-str
-syn keyword txl_keyword contained replace-vec rest ret retf
-syn keyword txl_keyword contained return return-from reverse rlcp
-syn keyword txl_keyword contained rperm rplaca rplacd run
-syn keyword txl_keyword contained s-ifblk s-ifchr s-ifdir s-ififo
-syn keyword txl_keyword contained s-iflnk s-ifmt s-ifreg s-ifsock
-syn keyword txl_keyword contained s-irgrp s-iroth s-irusr s-irwxg
-syn keyword txl_keyword contained s-irwxo s-irwxu s-isgid s-isuid
-syn keyword txl_keyword contained s-isvtx s-iwgrp s-iwoth s-iwusr
-syn keyword txl_keyword contained s-ixgrp s-ixoth s-ixusr search
-syn keyword txl_keyword contained search-regex search-regst search-str search-str-tree
-syn keyword txl_keyword contained second seek-stream select seqp
-syn keyword txl_keyword contained set set-diff set-hash-userdata set-sig-handler
-syn keyword txl_keyword contained sethash setitimer setlogmask sh
-syn keyword txl_keyword contained sig-abrt sig-alrm sig-bus sig-check
-syn keyword txl_keyword contained sig-chld sig-cont sig-fpe sig-hup
-syn keyword txl_keyword contained sig-ill sig-int sig-io sig-iot
-syn keyword txl_keyword contained sig-kill sig-lost sig-pipe sig-poll
-syn keyword txl_keyword contained sig-prof sig-pwr sig-quit sig-segv
-syn keyword txl_keyword contained sig-stkflt sig-stop sig-sys sig-term
-syn keyword txl_keyword contained sig-trap sig-tstp sig-ttin sig-ttou
-syn keyword txl_keyword contained sig-urg sig-usr1 sig-usr2 sig-vtalrm
-syn keyword txl_keyword contained sig-winch sig-xcpu sig-xfsz sign-extend
-syn keyword txl_keyword contained sin sixth size-vec some
-syn keyword txl_keyword contained sort sort-group source-loc source-loc-str
-syn keyword txl_keyword contained span-str splice split-str split-str-set
-syn keyword txl_keyword contained sqrt sssucc ssucc stat
-syn keyword txl_keyword contained stdlib str< str<= str=
-syn keyword txl_keyword contained str> str>= stream-get-prop stream-set-prop
-syn keyword txl_keyword contained streamp string-extend string-lt stringp
-syn keyword txl_keyword contained sub sub-list sub-str sub-vec
-syn keyword txl_keyword contained succ symacrolet symbol-function symbol-name
-syn keyword txl_keyword contained symbol-package symbol-value symbolp symlink
-syn keyword txl_keyword contained sys-qquote sys-splice sys-unquote syslog
-syn keyword txl_keyword contained tan tb tc tf
-syn keyword txl_keyword contained third throw throwf time
-syn keyword txl_keyword contained time-fields-local time-fields-utc time-string-local time-string-utc
-syn keyword txl_keyword contained time-usec tofloat toint tok-str
-syn keyword txl_keyword contained tok-where tostring tostringp tprint
-syn keyword txl_keyword contained transpose tree-bind tree-case tree-find
-syn keyword txl_keyword contained trie-add trie-compress trie-lookup-begin trie-lookup-feed-char
-syn keyword txl_keyword contained trie-value-at trim-str true trunc
-syn keyword txl_keyword contained trunc-rem tuples txr-case txr-if
-syn keyword txl_keyword contained txr-when typeof unget-byte unget-char
-syn keyword txl_keyword contained uniq unique unless unquote
-syn keyword txl_keyword contained until upcase-str update url-decode
-syn keyword txl_keyword contained url-encode usleep uw-protect vec
-syn keyword txl_keyword contained vec-push vec-set-length vecref vector
-syn keyword txl_keyword contained vector-list vectorp w-continued w-coredump
-syn keyword txl_keyword contained w-exitstatus w-ifcontinued w-ifexited w-ifsignaled
-syn keyword txl_keyword contained w-ifstopped w-nohang w-stopsig w-termsig
-syn keyword txl_keyword contained w-untraced wait weave when
-syn keyword txl_keyword contained whenlet where while whilet
-syn keyword txl_keyword contained width with-saved-vars wrap wrap*
-syn keyword txl_keyword contained zap zerop zip
+syn keyword txl_keyword contained dohash downcase-str dup dupfd
+syn keyword txl_keyword contained dwim each each* empty
+syn keyword txl_keyword contained ensure-dir env env-fbind env-hash
+syn keyword txl_keyword contained env-vbind eq eql equal
+syn keyword txl_keyword contained errno error eval evenp
+syn keyword txl_keyword contained exit exp expt exptmod
+syn keyword txl_keyword contained false fbind fboundp fifth
+syn keyword txl_keyword contained fileno filter-equal filter-string-tree finalize
+syn keyword txl_keyword contained find find-if find-max find-min
+syn keyword txl_keyword contained find-package first fixnump flatten
+syn keyword txl_keyword contained flatten* flet flip flo-int
+syn keyword txl_keyword contained flo-str floatp floor flush-stream
+syn keyword txl_keyword contained for for* force fork
+syn keyword txl_keyword contained format fourth fun func-get-env
+syn keyword txl_keyword contained func-get-form func-set-env functionp gcd
+syn keyword txl_keyword contained gen generate gensym gequal
+syn keyword txl_keyword contained get-byte get-char get-error get-error-str
+syn keyword txl_keyword contained get-hash-userdata get-line get-lines get-list-from-stream
+syn keyword txl_keyword contained get-sig-handler get-string get-string-from-stream gethash
+syn keyword txl_keyword contained getitimer getpid getppid giterate
+syn keyword txl_keyword contained glob glob-altdirfunc glob-brace glob-err
+syn keyword txl_keyword contained glob-mark glob-nocheck glob-noescape glob-nomagic
+syn keyword txl_keyword contained glob-nosort glob-onlydir glob-period glob-tilde
+syn keyword txl_keyword contained glob-tilde-check greater group-by gun
+syn keyword txl_keyword contained hash hash-alist hash-construct hash-count
+syn keyword txl_keyword contained hash-diff hash-eql hash-equal hash-isec
+syn keyword txl_keyword contained hash-keys hash-pairs hash-uni hash-update
+syn keyword txl_keyword contained hash-update-1 hash-values hashp html-decode
+syn keyword txl_keyword contained html-encode iapply identity ido
+syn keyword txl_keyword contained if iff iffi iflet
+syn keyword txl_keyword contained ignerr in inc inhash
+syn keyword txl_keyword contained int-flo int-str integerp intern
+syn keyword txl_keyword contained interp-fun-p interpose ip ipf
+syn keyword txl_keyword contained isqrt itimer-prov itimer-real itimer-virtual
+syn keyword txl_keyword contained juxt keep-if keep-if* keywordp
+syn keyword txl_keyword contained kill labels lambda last
+syn keyword txl_keyword contained lazy-str lazy-str-force lazy-str-force-upto lazy-str-get-trailing-list
+syn keyword txl_keyword contained lazy-stream-cons lazy-stringp lbind lcm
+syn keyword txl_keyword contained lcons-fun lconsp ldiff length
+syn keyword txl_keyword contained length-list length-str length-str-< length-str-<=
+syn keyword txl_keyword contained length-str-> length-str->= length-vec lequal
+syn keyword txl_keyword contained less let let* lexical-fun-p
+syn keyword txl_keyword contained lexical-lisp1-binding lexical-var-p link lisp-parse
+syn keyword txl_keyword contained list list* list-str list-vector
+syn keyword txl_keyword contained listp log log-alert log-auth
+syn keyword txl_keyword contained log-authpriv log-cons log-crit log-daemon
+syn keyword txl_keyword contained log-debug log-emerg log-err log-info
+syn keyword txl_keyword contained log-ndelay log-notice log-nowait log-odelay
+syn keyword txl_keyword contained log-perror log-pid log-user log-warning
+syn keyword txl_keyword contained log10 log2 logand logior
+syn keyword txl_keyword contained lognot logtest logtrunc logxor
+syn keyword txl_keyword contained macro-form-p macro-time macroexpand macroexpand-1
+syn keyword txl_keyword contained macrolet major make-catenated-stream make-env
+syn keyword txl_keyword contained make-hash make-lazy-cons make-like make-package
+syn keyword txl_keyword contained make-random-state make-similar-hash make-string-byte-input-stream make-string-input-stream
+syn keyword txl_keyword contained make-string-output-stream make-strlist-output-stream make-sym make-time
+syn keyword txl_keyword contained make-time-utc make-trie makedev mapcar
+syn keyword txl_keyword contained mapcar* mapdo mapf maphash
+syn keyword txl_keyword contained mappend mappend* mask match-fun
+syn keyword txl_keyword contained match-regex match-regex-right match-regst match-regst-right
+syn keyword txl_keyword contained match-str match-str-tree max member
+syn keyword txl_keyword contained member-if memq memql memqual
+syn keyword txl_keyword contained merge min minor minusp
+syn keyword txl_keyword contained mkdir mknod mkstring mod
+syn keyword txl_keyword contained multi multi-sort n-choose-k n-perm-k
+syn keyword txl_keyword contained nconc nilf none not
+syn keyword txl_keyword contained notf nreverse null nullify
+syn keyword txl_keyword contained num-chr num-str numberp oand
+syn keyword txl_keyword contained oddp op open-command open-directory
+syn keyword txl_keyword contained open-file open-fileno open-files open-files*
+syn keyword txl_keyword contained open-pipe open-process open-tail openlog
+syn keyword txl_keyword contained opip or orf packagep
+syn keyword txl_keyword contained pad partition partition* partition-by
+syn keyword txl_keyword contained perm plusp pop pos
+syn keyword txl_keyword contained pos-if pos-max pos-min posq
+syn keyword txl_keyword contained posql posqual pppred ppred
+syn keyword txl_keyword contained pprinl pprint pprof pred
+syn keyword txl_keyword contained prinl print prof prog1
+syn keyword txl_keyword contained progn prop proper-listp push
+syn keyword txl_keyword contained pushhash put-byte put-char put-line
+syn keyword txl_keyword contained put-lines put-string put-strings pwd
+syn keyword txl_keyword contained qquote quasi quasilist quote
+syn keyword txl_keyword contained rand random random-fixnum random-state-p
+syn keyword txl_keyword contained range range* range-regex rcomb
+syn keyword txl_keyword contained read readlink real-time-stream-p reduce-left
+syn keyword txl_keyword contained reduce-right ref refset regex-compile
+syn keyword txl_keyword contained regex-parse regexp regsub rehome-sym
+syn keyword txl_keyword contained remhash remove-if remove-if* remove-path
+syn keyword txl_keyword contained remq remq* remql remql*
+syn keyword txl_keyword contained remqual remqual* rename-path repeat
+syn keyword txl_keyword contained replace replace-list replace-str replace-vec
+syn keyword txl_keyword contained rest ret retf return
+syn keyword txl_keyword contained return-from reverse rlcp rperm
+syn keyword txl_keyword contained rplaca rplacd run s-ifblk
+syn keyword txl_keyword contained s-ifchr s-ifdir s-ififo s-iflnk
+syn keyword txl_keyword contained s-ifmt s-ifreg s-ifsock s-irgrp
+syn keyword txl_keyword contained s-iroth s-irusr s-irwxg s-irwxo
+syn keyword txl_keyword contained s-irwxu s-isgid s-isuid s-isvtx
+syn keyword txl_keyword contained s-iwgrp s-iwoth s-iwusr s-ixgrp
+syn keyword txl_keyword contained s-ixoth s-ixusr search search-regex
+syn keyword txl_keyword contained search-regst search-str search-str-tree second
+syn keyword txl_keyword contained seek-stream select seqp set
+syn keyword txl_keyword contained set-diff set-hash-userdata set-sig-handler sethash
+syn keyword txl_keyword contained setitimer setlogmask sh sig-abrt
+syn keyword txl_keyword contained sig-alrm sig-bus sig-check sig-chld
+syn keyword txl_keyword contained sig-cont sig-fpe sig-hup sig-ill
+syn keyword txl_keyword contained sig-int sig-io sig-iot sig-kill
+syn keyword txl_keyword contained sig-lost sig-pipe sig-poll sig-prof
+syn keyword txl_keyword contained sig-pwr sig-quit sig-segv sig-stkflt
+syn keyword txl_keyword contained sig-stop sig-sys sig-term sig-trap
+syn keyword txl_keyword contained sig-tstp sig-ttin sig-ttou sig-urg
+syn keyword txl_keyword contained sig-usr1 sig-usr2 sig-vtalrm sig-winch
+syn keyword txl_keyword contained sig-xcpu sig-xfsz sign-extend sin
+syn keyword txl_keyword contained sixth size-vec some sort
+syn keyword txl_keyword contained sort-group source-loc source-loc-str span-str
+syn keyword txl_keyword contained splice split-str split-str-set sqrt
+syn keyword txl_keyword contained sssucc ssucc stat stdlib
+syn keyword txl_keyword contained str< str<= str= str>
+syn keyword txl_keyword contained str>= stream-get-prop stream-set-prop streamp
+syn keyword txl_keyword contained string-extend string-lt stringp sub
+syn keyword txl_keyword contained sub-list sub-str sub-vec succ
+syn keyword txl_keyword contained symacrolet symbol-function symbol-name symbol-package
+syn keyword txl_keyword contained symbol-value symbolp symlink sys-qquote
+syn keyword txl_keyword contained sys-splice sys-unquote syslog tan
+syn keyword txl_keyword contained tb tc tf third
+syn keyword txl_keyword contained throw throwf time time-fields-local
+syn keyword txl_keyword contained time-fields-utc time-string-local time-string-utc time-usec
+syn keyword txl_keyword contained tofloat toint tok-str tok-where
+syn keyword txl_keyword contained tostring tostringp tprint transpose
+syn keyword txl_keyword contained tree-bind tree-case tree-find trie-add
+syn keyword txl_keyword contained trie-compress trie-lookup-begin trie-lookup-feed-char trie-value-at
+syn keyword txl_keyword contained trim-str true trunc trunc-rem
+syn keyword txl_keyword contained tuples txr-case txr-if txr-when
+syn keyword txl_keyword contained typeof unget-byte unget-char uniq
+syn keyword txl_keyword contained unique unless unquote until
+syn keyword txl_keyword contained upcase-str update url-decode url-encode
+syn keyword txl_keyword contained usleep uw-protect vec vec-push
+syn keyword txl_keyword contained vec-set-length vecref vector vector-list
+syn keyword txl_keyword contained vectorp w-continued w-coredump w-exitstatus
+syn keyword txl_keyword contained w-ifcontinued w-ifexited w-ifsignaled w-ifstopped
+syn keyword txl_keyword contained w-nohang w-stopsig w-termsig w-untraced
+syn keyword txl_keyword contained wait weave when whenlet
+syn keyword txl_keyword contained where while whilet width
+syn keyword txl_keyword contained with-saved-vars wrap wrap* zap
+syn keyword txl_keyword contained zerop zip
 
 syn keyword txr_keyword contained accept all and assert
 syn keyword txr_keyword contained bind block cases cat