zsh/Test/D04parameter.ztst

# Test parameter expansion.  Phew.

%prep

  mkdir parameter.tmp
  cd parameter.tmp
  touch boringfile evenmoreboringfile

%test

  foo='the first parameter'
  bar='the second parameter'
  print -l $foo ${bar}
0:Basic scalar parameter substitution
>the first parameter
>the second parameter

  array1=(the first array)
  array2=(the second array)
  print -l $array1 ${array2}
0:Basic array parameter substitution
>the
>first
>array
>the
>second
>array

  setopt ksharrays
  print -l $array1 ${array2}
  unsetopt ksharrays
0:Basic ksharray substitution
>the
>the

  setopt shwordsplit
  print -l $foo ${bar}
  unsetopt shwordsplit
0:Basic shwordsplit option handling
>the
>first
>parameter
>the
>second
>parameter

  print $+foo ${+foo} $+notappearinginthistest ${+notappearinginthistest}
0:$+...
>1 1 0 0

  set1=set1v
  null1=
  print ${set1:-set1d} ${set1-set2d} ${null1:-null1d} ${null1-null2d} x
  print ${unset1:-unset1d} ${unset1-unset2d} x
0:${...:-...} and ${...-...}
>set1v set1v null1d x
>unset1d unset2d x

  set2=irrelevant
  print ${set1:=set1d} ${set2::=set2d}
  print $set2
  wasnull1=
  wasnull2=
  print ${wasnull1=wasnull1d} ${wasnull2:=wasnull2d}
  print $wasnull1 $wasnull2
0:${...:=...}, ${...::=...}, ${...=...}
>set1v set2d
>set2d
>wasnull2d
>wasnull2d

  (print ${set1:?okhere}; print ${unset1:?exiting1}; print not reached;)
  (print ${null1?okhere}; print ${null1:?exiting2}; print not reached;)
1:${...:?...}, ${...?...}
>set1v
>
?ZTST_execchunk:2: unset1: exiting1
?ZTST_execchunk:2: null1: exiting2

  print ${set1:+word1} ${set1+word2} ${null1:+word3} ${null1+word4}
  print ${unset1:+word5} ${unset1+word6}
0:${...:+...}, ${...+...}
>word1 word2 word4
>

  str1='This is very boring indeed.'
  print ${str1#*s}
  print ${str1##*s}
  print $str1##s
0:${...#...}, ${...##...}
> is very boring indeed.
> very boring indeed.
>This is very boring indeed.##s

  str2='If you'\''re reading this you should go and fix some bugs instead.'
  print ${str2%d*}
  print ${str2%%d*}
0:${...%...}, ${...%%...}
>If you're reading this you should go and fix some bugs instea
>If you're rea

  str1='does match'
  str2='does not match'
  print ${str1:#does * match}
  print ${str2:#does * match}
0:${...:#...}
>does match
>

  array1=(arthur boldly claws dogs every fight)
  print ${array1:#[aeiou]*}
  print ${(M)array1:#[aeiou]*}
0:${...:#...}, ${(M)...:#...} with array
>boldly claws dogs fight
>arthur every

  str1="$array1"
  print ${str1/[aeiou]*g/a braw bricht moonlicht nicht the nic}
  print ${(S)str1/[aeiou]*g/relishe}
0:scalar ${.../.../...}, ${(S).../.../...}
>a braw bricht moonlicht nicht the nicht
>relishes every fight

  print ${array1/[aeiou]*/Y}
  print ${(S)array1/[aeiou]*/Y}
0:array ${.../.../...}, ${(S).../.../...}
>Y bY clY dY Y fY
>Yrthur bYldly clYws dYgs Yvery fYght

  str1='o this is so, so so very dull'
  print ${str1//o*/Please no}
  print ${(S)str1//o*/Please no}
0:scalar ${...//.../...}, ${(S)...//.../...}
>Please no
>Please no this is sPlease no, sPlease no sPlease no very dull

  print ${array1//[aeiou]*/Y}
  print ${(S)array1//[aeiou]*/Y}
0:array ${...//.../...}, ${(S)...//.../...}
>Y bY clY dY Y fY
>YrthYr bYldly clYws dYgs YvYry fYght

  print ${array1:/[aeiou]*/expletive deleted}
0:array ${...:/...}
>expletive deleted boldly claws dogs expletive deleted fight

  str1='twocubed'
  array=(the number of protons in an oxygen nucleus)
  print $#str1 ${#str1} "$#str1 ${#str1}" $#array ${#array} "$#array ${#array}"
0:${#...}, $#...
>8 8 8 8 8 8 8 8

  array=(once bitten twice shy)
  print IF${array}THEN
  print IF${^array}THEN
0:basic ${^...}
>IFonce bitten twice shyTHEN
>IFonceTHEN IFbittenTHEN IFtwiceTHEN IFshyTHEN

  # Quote ${array} here because {...,...} doesn't like unquoted spaces.
  print IF{"${array}",THEN}ELSE
  print IF{${^array},THEN}ELSE
0:combined ${^...} and {...,...}
>IFonce bitten twice shyELSE IFTHENELSE
>IFonceELSE IFTHENELSE IFbittenELSE IFTHENELSE IFtwiceELSE IFTHENELSE IFshyELSE IFTHENELSE

  str1='one word'
  print -l $str1 ${=str1} "split ${=str1}wise"
0:${=...}
>one word
>one
>word
>split one
>wordwise

  str1='*'
  print $str1 ${~str1} $~str1
  setopt globsubst
  print $str1
  unsetopt globsubst
0:${~...} and globsubst
>* boringfile evenmoreboringfile boringfile evenmoreboringfile
>boringfile evenmoreboringfile

  print -l "${$(print one word)}" "${=$(print two words)}"
0:splitting of $(...) inside ${...}
>one word
>two
>words

  print -l "${(f)$(print first line\\nsecond line\\nthird line)}"
0:${(f)$(...)}
>first line
>second line
>third line

  print -l ${(A)newarray=splitting by numbers}
  print -l ${(A)=newarray::=splitting by spaces, actually}
0:${(A)...=...}, ${(A)...::=...}
>splitting by numbers
>splitting
>by
>spaces,
>actually

  newarray=("split me" "split me" "I\'m yours")
  print -l "${(@)newarray}"
0:"${(@)...}"
>split me
>split me
>I'm yours

  foo='$(print Howzat)'
  print ${(e)foo}
0:${(e)...}
>Howzat

  foo='I'\''m nearly out of my mind with tedium'
  bar=foo
  print ${(P)bar}
0:${(P)...}
>I'm nearly out of my mind with tedium

  foo=(I could be watching that programme I recorded)
  print ${(o)foo}
  print ${(oi)foo}
  print ${(O)foo}
  print ${(Oi)foo}
0:${(o)...}, ${(O)...}
>I I be could programme recorded that watching
>be could I I programme recorded that watching
>watching that recorded programme could be I I
>watching that recorded programme I I could be

  foo=(yOU KNOW, THE ONE WITH wILLIAM dALRYMPLE)
  bar=(doing that tour of India.)
  print ${(L)foo}
  print ${(U)bar}
0:${(L)...}, ${(U)...}
>you know, the one with william dalrymple
>DOING THAT TOUR OF INDIA.

  foo='instead here I am stuck by the computer'
  print ${(C)foo}
0:${(C)...}
>Instead Here I Am Stuck By The Computer

  foo=$'\x7f\x00'
  print ${(V)foo}
0:${(V)...}
>^?^@

  foo='playing '\''stupid'\'' "games" \w\i\t\h $quoting.'
  print -r ${(q)foo}
  print -r ${(qq)foo}
  print -r ${(qqq)foo}
  print -r ${(qqqq)foo}
0:${(q...)...}
>playing\ \'stupid\'\ \"games\"\ \\w\\i\\t\\h\ \$quoting.
>'playing '\''stupid'\'' "games" \w\i\t\h $quoting.'
>"playing 'stupid' \"games\" \\w\\i\\t\\h \$quoting."
>$'playing \'stupid\' "games" \\w\\i\\t\\h $quoting.'

  foo="'and now' \"even the pubs\" \\a\\r\\e shut."
  print -r ${(Q)foo}
0:${(Q)...}
>and now even the pubs are shut.

  psvar=(dog)
  setopt promptsubst
  foo='It shouldn'\''t $(happen) to a %1v.'
  bar='But `echo what can you do\?`'
  print -r ${(%)foo}
  print -r ${(%%)bar}
0:${(%)...}
>It shouldn't $(happen) to a dog.
>But what can you do?

  foo='unmatched "'
  print ${(QX)foo}
1:${(QX)...}
?ZTST_execchunk:2: unmatched "

  array=(characters in an array)
  print ${(c)#array}
0:${(c)#...}
>22

  print ${(w)#array}
  str='colon::bolon::solon'
  print ${(ws.:.)#str}
  print ${(Ws.:.)#str}
0:${(w)...}, ${(W)...}
>4
>3
>5

  typeset -A assoc
  assoc=(key1 val1 key2 val2)
  print ${(o)assoc}
  print ${(ok)assoc}
  print ${(ov)assoc}
  print ${(okv)assoc}
0:${(k)...}, ${(v)...}
>val1 val2
>key1 key2
>val1 val2
>key1 key2 val1 val2

  foo=(resulting words uproariously padded)
  print ${(pl.10..\x22..X.)foo}
0:${(pl...)...}
>Xresulting """"Xwords roariously """Xpadded

  foo=(why in goodness name am I doing this)
  print ${(r.5..!..?.)foo}
0:${(r...)...}
>why?! in?!! goodn name? am?!! I?!!! doing this?

  array=(I\'m simply putting a brave face on)
  print ${(j:--:)array}
0:${(j)...}
>I'm--simply--putting--a--brave--face--on

  print ${(F)array}
0:${(F)...}
>I'm
>simply
>putting
>a
>brave
>face
>on

  string='zometimez zis getz zplit on a z'
  print -l ${(s?z?)string}
0:${(s...)...}
>ometime
> 
>is get
> 
>plit on a 

  str=s
  arr=(a)
  typeset -A ass
  ass=(a a)
  integer i
  float f
  print ${(t)str} ${(t)arr} ${(t)ass} ${(t)i} ${(t)f}
0:${(t)...}
>scalar array association-local integer-local float-local

  # it's not quite clear that these are actually right unless you know
  # the algorithm:  search along the string for the point at which the
  # first (last) match occurs, for ## (%%), then take the shortest possible
  # version of that for # (%).  it's as good a definition as anything.
  string='where is the white windmill, whispered walter wisely'
  print ${(S)string#h*e}
  print ${(S)string##h*e}
  print ${(S)string%h*e}
  print ${(S)string%%h*e}
0:${(S)...#...} etc.
>wre is the white windmill, whispered walter wisely
>wly
>where is the white windmill, wred walter wisely
>where is the white windmill, wly

  setopt extendedglob
  print ${(SI:1:)string##w[^[:space:]]# }
  print ${(SI:1+1:)string##w[^[:space:]]# }
  print ${(SI:1+1+1:)string##w[^[:space:]]# }
  print ${(SI:1+1+1+1:)string##w[^[:space:]]# }
0:${(I:...:)...}
>is the white windmill, whispered walter wisely
>where is the windmill, whispered walter wisely
>where is the white whispered walter wisely
>where is the white windmill, walter wisely

  print ${(MSI:1:)string##w[^[:space:]]# }
0:${(M...)...}
>where 

  print ${(R)string//w[a-z]# #}
0:${(R)...}
>is the , 

  # This (1) doesn't work with // or /
  #      (2) perhaps ought to be 18, to be consistent with normal zsh
  #          substring indexing and with backreferences.
  print ${(BES)string##white}
0:${(BE...)...}
>14 19

  print ${(NS)string##white}
0:${(N)...}
>5

  string='abcdefghijklmnopqrstuvwxyz'
  print ${${string%[aeiou]*}/(#m)?(#e)/${(U)MATCH}}
0:Rule 1:  Nested substitutions
>abcdefghijklmnopqrsT

  array=(et Swann avec cette muflerie intermittente)
  string="qui reparaissait chez lui"
  print ${array[4,5]}
  print ${array[4,5][1]}
  print ${array[4,5][1][2,3]}
  print ${string[4,5]}
  print ${string[4,5][1]}
0:Rule 2: Parameter subscripting
>cette muflerie
>cette
>et
> r
> 

  foo=stringalongamax
  print ${${(P)foo[1,6]}[1,3]}
0:Rule 3: Parameter Name Replacement
>qui

  print "${array[5,6]}"
  print "${(j.:.)array[1,2]}"
0:Rule 4: Double-Quoted Joining
>muflerie intermittente
>et:Swann

  print "${${array}[5,7]}"
  print "${${(@)array}[1,2]}"
0:Rule 5: Nested Subscripting
>wan
>et Swann

  print "${${(@)array}[1,2]#?}"
  print "${(@)${(@)array}[1,2]#?}"
0:Rule 6: Modifiers
>t Swann
>t wann

  array=(she sells z shells by the z shore)
  (IFS='+'; print ${(s.s.)array})
0:Rule 7: Forced Joining, and 8: Forced splitting
>he+ ell +z+ hell +by+the+z+ hore

  setopt shwordsplit
  string='another poxy boring string'
  print -l ${${string}/o/ }
  unsetopt shwordsplit
0:Rule 9: Shell Word Splitting
>an
>ther
>p
>xy
>b
>ring
>string

  setopt nonomatch
  foo='b* e*'
  print ${(e)~foo}
  print ${(e)~=foo}
0:Rule 10: Re-Evaluation
>b* e*
>boringfile evenmoreboringfile

  # ${bar} -> $bar  here would yield "bad substitution".
  bar=confinement
  print ${(el.20..X.)${bar}}
0:Rule 11: Padding
>XXXXXXXXXconfinement

  foo=(bar baz)
  bar=(ax1 bx1)
  print "${(@)${foo}[1]}"
  print "${${(@)foo}[1]}"
  print -l ${(s/x/)bar}
  print -l ${(j/x/s/x/)bar}
  print -l ${(s/x/)bar%%1*}
0:Examples in manual on parameter expansion
>b
>bar
>a
>1 b
>1
>a
>1
>b
>1
>a
> b

  set If "this test fails" "we have broken" the shell again
  print -l ${1+"$@"}
0:Regression test of ${1+"$@"} bug
>If
>this test fails
>we have broken
>the
>shell
>again

  set If "this test fails" "we have broken" the shell again
  print -l "${(A)foo::=$@}"
  print -l $foo
0:Regression test of "${(A)foo=$@}" bug
>If this test fails we have broken the shell again
>If
>this test fails
>we have broken
>the
>shell
>again

  set If "this test fails" maybe "we have finally fixed" the shell
  print -l ${=1+"$@"}
0:Regression test of unfixed ${=1+"$@"} bug
>If
>this
>test
>fails
>maybe
>we
>have
>finally
>fixed
>the
>shell