From 17740888b585e7dd98c835500a46d394454886f5 Mon Sep 17 00:00:00 2001
From: Florent DENEF <fdenef@aneo.fr>
Date: Thu, 2 Mar 2023 10:33:47 +0100
Subject: [PATCH] Adding prob7, unfinished.

---
 prob7.txt    | 1027 ++++++++++++++++++++++++++++++++++++++++++++++++++
 src/prob7.rs |   17 +
 2 files changed, 1044 insertions(+)
 create mode 100644 prob7.txt
 create mode 100644 src/prob7.rs

diff --git a/prob7.txt b/prob7.txt
new file mode 100644
index 0000000..27eadd0
--- /dev/null
+++ b/prob7.txt
@@ -0,0 +1,1027 @@
+$ cd /
+$ ls
+268495 jgfbgjdb
+dir ltcqgnc
+272455 pct.bbd
+200036 phthcq
+174378 qld
+dir rbmstsf
+130541 trhbvp.fmm
+dir twjcmp
+$ cd ltcqgnc
+$ ls
+227634 brjmpbfg.hjh
+dir cmdzcq
+dir dnbf
+203609 fpj
+dir frt
+288222 lcr.nlr
+dir ngm
+dir ngsrlzc
+5927 phrnnw.dzj
+dir shjv
+dir wsvfbb
+$ cd cmdzcq
+$ ls
+37316 cfvhc.qsw
+41839 mgwlr
+dir pfmbt
+281659 tlpqzz
+dir vmd
+189667 zdvj.sbl
+$ cd pfmbt
+$ ls
+120151 bhzsnw.gft
+45035 cfvhc.zpp
+$ cd ..
+$ cd vmd
+$ ls
+dir dnc
+dir rgftffp
+$ cd dnc
+$ ls
+dir dvndwjzs
+216199 fzwrr.ndp
+dir gwhtzlpg
+dir lsfn
+dir lzcv
+237080 qld
+131509 rwhffw.ldj
+84024 wph
+$ cd dvndwjzs
+$ ls
+264750 htjvzrv.plg
+$ cd ..
+$ cd gwhtzlpg
+$ ls
+dir cfvhc
+285900 fpj
+112604 gqng.zww
+188180 phthcq
+dir prgbvj
+$ cd cfvhc
+$ ls
+136528 bbsmm
+$ cd ..
+$ cd prgbvj
+$ ls
+180538 hfgg.fbm
+$ cd ..
+$ cd ..
+$ cd lsfn
+$ ls
+133375 fzwrr.ndp
+242940 gcftj.nlb
+$ cd ..
+$ cd lzcv
+$ ls
+121565 plnqnqq.zwr
+100302 wdmqc
+$ cd ..
+$ cd ..
+$ cd rgftffp
+$ ls
+259406 rwhffw
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd dnbf
+$ ls
+dir bft
+219468 czjvl.brj
+130503 fpj
+120522 rwhffw.hrn
+92338 sngz.qsd
+dir vpmvnmfj
+$ cd bft
+$ ls
+dir zdvj
+$ cd zdvj
+$ ls
+50020 sngz.qsd
+$ cd ..
+$ cd ..
+$ cd vpmvnmfj
+$ ls
+78395 dlch.vfb
+270867 hnmq
+172551 pct.bbd
+186790 phthcq
+65750 sjjlnf.bjn
+$ cd ..
+$ cd ..
+$ cd frt
+$ ls
+dir bbsmm
+dir cfvhc
+22983 dpvmzlv
+dir fptlqh
+290097 fzwrr.ndp
+dir hvwdzbsw
+dir nlm
+57046 pct.bbd
+208565 qld.mms
+261556 wcfvpmz
+$ cd bbsmm
+$ ls
+dir bbsmm
+238522 hmjvg.pfn
+228873 nvvsml.bcg
+dir rwhffw
+dir sgbnzbqt
+$ cd bbsmm
+$ ls
+dir lnz
+dir msmpndgh
+dir ncpbn
+dir wfr
+$ cd lnz
+$ ls
+99970 fjbmpmrz.ldw
+$ cd ..
+$ cd msmpndgh
+$ ls
+dir sfsqwrhg
+$ cd sfsqwrhg
+$ ls
+dir vfqg
+$ cd vfqg
+$ ls
+17855 bbsmm
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ncpbn
+$ ls
+dir nltglc
+$ cd nltglc
+$ ls
+247577 qld.vjz
+$ cd ..
+$ cd ..
+$ cd wfr
+$ ls
+135424 bbps
+243274 hsvjddff.nfw
+dir prg
+158111 qld.zff
+dir rwhffw
+$ cd prg
+$ ls
+214834 lfpqlt.bdt
+dir nclpwh
+104870 phthcq
+dir trrtpgd
+$ cd nclpwh
+$ ls
+104441 mjjftn.sqt
+$ cd ..
+$ cd trrtpgd
+$ ls
+137542 qld
+$ cd ..
+$ cd ..
+$ cd rwhffw
+$ ls
+dir glsrf
+$ cd glsrf
+$ ls
+189772 phthcq
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd rwhffw
+$ ls
+dir bbsmm
+$ cd bbsmm
+$ ls
+104690 cfvhc.nwc
+$ cd ..
+$ cd ..
+$ cd sgbnzbqt
+$ ls
+191204 cfvhc.jnv
+127263 vwfbr
+$ cd ..
+$ cd ..
+$ cd cfvhc
+$ ls
+72894 bbsmm.dns
+$ cd ..
+$ cd fptlqh
+$ ls
+dir bbsmm
+dir bdvp
+162052 vnnjfh.stw
+dir zshvq
+$ cd bbsmm
+$ ls
+dir bbsmm
+dir pchdq
+dir rwhffw
+$ cd bbsmm
+$ ls
+174590 bbsmm
+45636 fpj
+102831 qld
+dir vpwcmgq
+229136 zdvj.rtw
+dir znw
+$ cd vpwcmgq
+$ ls
+dir cfvhc
+dir jvd
+dir zdvj
+$ cd cfvhc
+$ ls
+55907 ccvdlc
+272581 fpj
+29765 phthcq
+$ cd ..
+$ cd jvd
+$ ls
+dir cfvhc
+$ cd cfvhc
+$ ls
+289471 cjzwdvs.gtn
+$ cd ..
+$ cd ..
+$ cd zdvj
+$ ls
+98507 cmldvpnc.qtl
+$ cd ..
+$ cd ..
+$ cd znw
+$ ls
+dir zdvj
+$ cd zdvj
+$ ls
+46012 wrgvln.lmf
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd pchdq
+$ ls
+dir cbssm
+98102 cfvhc
+259488 pct.bbd
+dir rwhffw
+7541 sngz.qsd
+167971 wvgrzn.bds
+$ cd cbssm
+$ ls
+45025 bbsmm
+22500 fpj
+$ cd ..
+$ cd rwhffw
+$ ls
+dir fncszbm
+166012 phthcq
+165925 rbs
+171350 tsbv.zws
+$ cd fncszbm
+$ ls
+dir wzrlzvm
+$ cd wzrlzvm
+$ ls
+191811 qzzs
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd rwhffw
+$ ls
+218844 dnbmcbr.wrc
+201091 mmpvsgjv.wgs
+dir mzt
+223628 pct.bbd
+dir qftlpdt
+56441 sngz.qsd
+33730 zdvj.jfs
+$ cd mzt
+$ ls
+25768 sngz.qsd
+283843 vjrmbw.jcs
+$ cd ..
+$ cd qftlpdt
+$ ls
+287536 mzhmjrg
+223797 pcp
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd bdvp
+$ ls
+dir lnvvwlm
+$ cd lnvvwlm
+$ ls
+210345 zll.scl
+$ cd ..
+$ cd ..
+$ cd zshvq
+$ ls
+251997 cfvhc.mcr
+220501 pct.bbd
+$ cd ..
+$ cd ..
+$ cd hvwdzbsw
+$ ls
+dir cfvhc
+21816 fpj
+251732 vcfcwjh.pjh
+187137 zdvj.bzd
+dir zgprrg
+$ cd cfvhc
+$ ls
+99722 zgq.bbh
+$ cd ..
+$ cd zgprrg
+$ ls
+dir brzpsnjl
+$ cd brzpsnjl
+$ ls
+dir qld
+$ cd qld
+$ ls
+30055 phqdjs.zwv
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd nlm
+$ ls
+176700 fzwrr.ndp
+256184 pct.bbd
+25442 qhngw.jwm
+dir rwhffw
+160900 wqr.wdn
+$ cd rwhffw
+$ ls
+240085 pcjjgjcr
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ngm
+$ ls
+118461 bbsmm
+dir czjzwl
+dir gjwws
+43114 nwvltczv.jpf
+dir qjpgzsj
+145909 rjdzrjzc.fdr
+dir tvmpgrq
+75554 zdmfhpwz.rhc
+dir zdvj
+196704 zdvj.nfm
+$ cd czjzwl
+$ ls
+dir btnsjtl
+dir cfvhc
+100911 cfvhc.mqg
+dir gljbgjq
+247017 jmrq
+dir qld
+$ cd btnsjtl
+$ ls
+76658 pmgnqr
+$ cd ..
+$ cd cfvhc
+$ ls
+189214 jvrcttm
+265333 mmgd.sbn
+$ cd ..
+$ cd gljbgjq
+$ ls
+dir ccqsnp
+dir fng
+104525 fzwrr.ndp
+31517 gmqhmwj.rbs
+122232 htddmr.wjm
+51362 rtlnr.mwh
+42769 rvddl
+$ cd ccqsnp
+$ ls
+192021 cfvhc.lww
+dir mbmsfgtb
+222388 nvgppmv
+dir qbpnbsv
+$ cd mbmsfgtb
+$ ls
+104492 jfwl.jlv
+273739 phthcq
+238815 rwhffw.tjp
+$ cd ..
+$ cd qbpnbsv
+$ ls
+176577 tlqnmmsc.gpt
+$ cd ..
+$ cd ..
+$ cd fng
+$ ls
+243298 cfvhc.pvb
+54364 fbrtb.hqd
+dir hvhwh
+dir rtcsp
+$ cd hvhwh
+$ ls
+87079 zdvj.gfq
+$ cd ..
+$ cd rtcsp
+$ ls
+dir zdvj
+$ cd zdvj
+$ ls
+288617 rwhffw.lzl
+161000 sngz.qsd
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd qld
+$ ls
+113942 bbsmm.msn
+239442 cchgv.mtd
+181920 nnlfh.gwz
+274766 rqtvc.frp
+$ cd ..
+$ cd ..
+$ cd gjwws
+$ ls
+dir bpzsc
+dir cfvhc
+dir fsnf
+dir zdvj
+$ cd bpzsc
+$ ls
+88033 cndwmvj.pzm
+275297 hslg.smz
+dir qld
+25067 qvntlcd.nzs
+$ cd qld
+$ ls
+240593 bbsmm.bgn
+dir dpqgcc
+277540 fpj
+dir qld
+$ cd dpqgcc
+$ ls
+dir rhqvcfd
+$ cd rhqvcfd
+$ ls
+199386 fzwrr.ndp
+$ cd ..
+$ cd ..
+$ cd qld
+$ ls
+269177 cjrc.dvq
+21631 fpj
+263874 pct.bbd
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd cfvhc
+$ ls
+dir nzd
+$ cd nzd
+$ ls
+273225 qld.jmn
+$ cd ..
+$ cd ..
+$ cd fsnf
+$ ls
+17887 fzwrr.ndp
+$ cd ..
+$ cd zdvj
+$ ls
+160076 rwhffw.trf
+$ cd ..
+$ cd ..
+$ cd qjpgzsj
+$ ls
+227586 njqbnz.hwl
+239840 zdvj.qcp
+$ cd ..
+$ cd tvmpgrq
+$ ls
+dir hdrsmnvc
+dir psrjr
+$ cd hdrsmnvc
+$ ls
+dir rjm
+dir zdvj
+$ cd rjm
+$ ls
+244666 bzvmdcm
+$ cd ..
+$ cd zdvj
+$ ls
+132943 gnz.ntd
+$ cd ..
+$ cd ..
+$ cd psrjr
+$ ls
+dir nfvllp
+dir plfgfs
+94173 qmdhr
+3133 swjh.rbg
+dir zmp
+$ cd nfvllp
+$ ls
+39707 zbsm.vsd
+$ cd ..
+$ cd plfgfs
+$ ls
+186603 cfvhc.sgb
+183833 ljn
+$ cd ..
+$ cd zmp
+$ ls
+123313 fzwrr.ndp
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd zdvj
+$ ls
+dir hzzs
+230054 nhcvn.dfl
+dir rgwfsqdc
+dir zwtjr
+$ cd hzzs
+$ ls
+58585 cbfhrf.vqn
+dir cfvhc
+dir fbzpmc
+dir fdtjp
+28182 fzwrr.ndp
+35581 nzwndl.zzs
+dir pmrv
+253508 qgdnnl.tqq
+$ cd cfvhc
+$ ls
+256186 nlgzqw.frl
+$ cd ..
+$ cd fbzpmc
+$ ls
+dir cfvhc
+$ cd cfvhc
+$ ls
+193322 rwhffw.vwc
+$ cd ..
+$ cd ..
+$ cd fdtjp
+$ ls
+dir bbsmm
+140927 fzwrr.ndp
+dir lcmpbs
+94413 mpnfgpsm
+dir qvrd
+247202 tlp
+$ cd bbsmm
+$ ls
+206896 clsqp.hbr
+$ cd ..
+$ cd lcmpbs
+$ ls
+dir bbsmm
+dir cfvhc
+dir rplqgm
+dir tmh
+dir zdvj
+$ cd bbsmm
+$ ls
+235479 sngz.qsd
+$ cd ..
+$ cd cfvhc
+$ ls
+285029 fpj
+29405 mhpr.czj
+$ cd ..
+$ cd rplqgm
+$ ls
+dir bbsmm
+dir cfvhc
+dir mwhf
+$ cd bbsmm
+$ ls
+257187 hsldvt.jdt
+186098 pct.bbd
+$ cd ..
+$ cd cfvhc
+$ ls
+dir rfw
+$ cd rfw
+$ ls
+254454 fzf.ltl
+$ cd ..
+$ cd ..
+$ cd mwhf
+$ ls
+3915 dtcjptnd
+116218 fzwrr.ndp
+$ cd ..
+$ cd ..
+$ cd tmh
+$ ls
+49016 ljsvgl.npd
+258257 mlfq.rrr
+$ cd ..
+$ cd zdvj
+$ ls
+dir jjj
+154441 lcpvwhp.mpq
+$ cd jjj
+$ ls
+31731 bbsmm.mhb
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd qvrd
+$ ls
+199473 pgqbpq
+$ cd ..
+$ cd ..
+$ cd pmrv
+$ ls
+120831 cfvhc.btv
+$ cd ..
+$ cd ..
+$ cd rgwfsqdc
+$ ls
+281099 cfvhc.trc
+119483 mntqrvw.qwz
+275572 zhphps
+$ cd ..
+$ cd zwtjr
+$ ls
+187404 gwjsj
+230074 qmr
+212641 wdhl.dfl
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ngsrlzc
+$ ls
+164729 lnc.mdg
+33748 pct.bbd
+119803 rfst.blw
+dir zdvj
+$ cd zdvj
+$ ls
+dir bbsmm
+251550 sngz.qsd
+120940 zlmcvg
+$ cd bbsmm
+$ ls
+206509 bsddjdv
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd shjv
+$ ls
+17754 lqqz.qmf
+265175 rdmsqztj.lnt
+$ cd ..
+$ cd wsvfbb
+$ ls
+dir bhbb
+271856 fzwrr.ndp
+114188 hgfjq.jvn
+dir jgnl
+dir qnddp
+51700 rwdnzwhv.vtr
+$ cd bhbb
+$ ls
+107036 rwhffw.pld
+$ cd ..
+$ cd jgnl
+$ ls
+dir qld
+$ cd qld
+$ ls
+39294 rbsvwh
+$ cd ..
+$ cd ..
+$ cd qnddp
+$ ls
+dir vzmrb
+58723 wcbz.dwh
+$ cd vzmrb
+$ ls
+203361 rvrbgd.cpw
+167876 zgpdcb.rql
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd rbmstsf
+$ ls
+dir bbsmm
+dir cfvhc
+63250 hcdlfmt.ccg
+dir mgzl
+dir ngflwbmp
+dir shvjprl
+123258 spqchmj.wpv
+$ cd bbsmm
+$ ls
+dir cfvhc
+dir gtvszgs
+6558 nzdhg
+121160 qld
+dir rfjfp
+dir rwhffw
+dir sbfshph
+$ cd cfvhc
+$ ls
+dir btmbjrw
+dir pzq
+133178 sngz.qsd
+$ cd btmbjrw
+$ ls
+dir ftpvz
+dir tjflfshs
+dir wvncjmf
+$ cd ftpvz
+$ ls
+dir lqlrh
+$ cd lqlrh
+$ ls
+114380 pcn.cbn
+$ cd ..
+$ cd ..
+$ cd tjflfshs
+$ ls
+274555 bbsmm.wpr
+$ cd ..
+$ cd wvncjmf
+$ ls
+dir nnrqcfmm
+$ cd nnrqcfmm
+$ ls
+217188 pct.bbd
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd pzq
+$ ls
+89797 sngz.qsd
+255100 thg
+$ cd ..
+$ cd ..
+$ cd gtvszgs
+$ ls
+87661 sngz.qsd
+$ cd ..
+$ cd rfjfp
+$ ls
+130164 cfvhc.rbt
+dir lhf
+dir qld
+20799 qld.gts
+dir qwzj
+150977 sngz.qsd
+$ cd lhf
+$ ls
+125848 lvgv.jtg
+81087 mdcw.rbv
+80091 qld
+dir rmsggp
+49093 thf.jnh
+dir tmf
+dir zdvj
+$ cd rmsggp
+$ ls
+dir fznsmbq
+dir lhghnn
+dir zdvj
+$ cd fznsmbq
+$ ls
+dir wqzwsspq
+dir zdvj
+$ cd wqzwsspq
+$ ls
+dir gbzfpfq
+$ cd gbzfpfq
+$ ls
+185410 pct.bbd
+$ cd ..
+$ cd ..
+$ cd zdvj
+$ ls
+140384 pct.bbd
+$ cd ..
+$ cd ..
+$ cd lhghnn
+$ ls
+36868 fpj
+181925 pct.bbd
+$ cd ..
+$ cd zdvj
+$ ls
+256916 bbsmm.mtr
+dir rwhffw
+75846 rwztfcj.qns
+$ cd rwhffw
+$ ls
+234834 bbsmm.gtp
+140315 pbwqrps
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd tmf
+$ ls
+88583 dhndg
+52796 qld.mlp
+$ cd ..
+$ cd zdvj
+$ ls
+8822 pct.bbd
+221658 sngz.qsd
+$ cd ..
+$ cd ..
+$ cd qld
+$ ls
+119026 dfc.bgr
+87684 fzwrr.ndp
+dir zdvj
+212120 zdvj.jhw
+$ cd zdvj
+$ ls
+dir cfvhc
+169434 mhlpvf.vjz
+$ cd cfvhc
+$ ls
+243919 brtvv
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd qwzj
+$ ls
+101395 qcjvs.mjs
+$ cd ..
+$ cd ..
+$ cd rwhffw
+$ ls
+94012 fzwrr.ndp
+205816 hqrgfm.wwt
+dir lzbmzw
+155203 qjv
+$ cd lzbmzw
+$ ls
+dir dfrdczdj
+$ cd dfrdczdj
+$ ls
+126459 tphtshwc
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd sbfshph
+$ ls
+229389 ccbgcv
+135997 cfvhc.ctl
+119490 rwhffw.pqp
+94530 vjtjz.cfs
+$ cd ..
+$ cd ..
+$ cd cfvhc
+$ ls
+dir cmr
+dir jvh
+dir mjs
+$ cd cmr
+$ ls
+227026 fpj
+$ cd ..
+$ cd jvh
+$ ls
+dir qld
+$ cd qld
+$ ls
+96968 phthcq
+$ cd ..
+$ cd ..
+$ cd mjs
+$ ls
+98117 qld.ftd
+$ cd ..
+$ cd ..
+$ cd mgzl
+$ ls
+198793 nfvnfqn.zwd
+$ cd ..
+$ cd ngflwbmp
+$ ls
+dir bbsmm
+dir jthnmqs
+137176 nrn
+80344 ntbq.ssw
+133166 phthcq
+210691 sngz.qsd
+255501 vgwn.gqr
+dir zdvj
+$ cd bbsmm
+$ ls
+98501 npwwzjgt
+134593 sngz.qsd
+46020 tjszcpm.brs
+213591 zdvj.sgj
+$ cd ..
+$ cd jthnmqs
+$ ls
+dir bbsmm
+dir cfdbp
+dir dpwqmbw
+67233 lzz.tmg
+21344 pzvjlt.qdb
+dir rwhffw
+dir sdtntw
+268059 vwhqh
+dir zdvj
+$ cd bbsmm
+$ ls
+263767 fpj
+46528 tpq.wtb
+$ cd ..
+$ cd cfdbp
+$ ls
+dir grczc
+$ cd grczc
+$ ls
+241829 vnnjnz.nww
+$ cd ..
+$ cd ..
+$ cd dpwqmbw
+$ ls
+287899 pct.bbd
+$ cd ..
+$ cd rwhffw
+$ ls
+41741 ffsqr.cwc
+dir ffzc
+dir nrs
+279620 qchg
+$ cd ffzc
+$ ls
+10583 pct.bbd
+$ cd ..
+$ cd nrs
+$ ls
+195239 zdvj.npp
+$ cd ..
+$ cd ..
+$ cd sdtntw
+$ ls
+245601 fpj
+9552 lgftw.ntj
+$ cd ..
+$ cd zdvj
+$ ls
+dir smjvcql
+$ cd smjvcql
+$ ls
+dir qcqljj
+$ cd qcqljj
+$ ls
+286791 fhm
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd zdvj
+$ ls
+dir bcghd
+57663 fzwrr.ndp
+177473 gzpfmsz.tnw
+53543 pswpr
+251188 sngz.qsd
+dir snqjl
+$ cd bcghd
+$ ls
+106732 sjvhjd
+dir vtgsnb
+$ cd vtgsnb
+$ ls
+dir gtj
+$ cd gtj
+$ ls
+151689 nncsjvn.vhd
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd snqjl
+$ ls
+104993 bjjqd.pqv
+233367 fzwrr.ndp
+11942 sngz.qsd
+$ cd ..
+$ cd ..
+$ cd ..
+$ cd shvjprl
+$ ls
+130539 jpzsdjw.hlz
+$ cd ..
+$ cd ..
+$ cd twjcmp
+$ ls
+86053 pct.bbd
\ No newline at end of file
diff --git a/src/prob7.rs b/src/prob7.rs
new file mode 100644
index 0000000..24c01dc
--- /dev/null
+++ b/src/prob7.rs
@@ -0,0 +1,17 @@
+use nom::{branch::alt, bytes::complete::tag, combinator::map, IResult};
+
+use crate::prob7::Instructions::{Cd, Dir, Ls};
+
+enum Instructions {
+    Ls,
+    Cd,
+    Dir,
+}
+
+fn parse_instruction(i: &str) -> IResult<&str, Instructions> {
+    alt((
+        map(tag("ls"), |_| Ls),
+        map(tag("cd"), |_| Cd),
+        map(tag("dir"), |_| Dir),
+    ))(i)
+}