mirror of
git://git.code.sf.net/p/zsh/code
synced 2024-11-19 13:33:52 +01:00
580 lines
12 KiB
Plaintext
580 lines
12 KiB
Plaintext
# Test parameter expansion. Phew.
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%prep
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mkdir parameter.tmp
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cd parameter.tmp
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touch boringfile evenmoreboringfile
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%test
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foo='the first parameter'
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bar='the second parameter'
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print -l $foo ${bar}
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0:Basic scalar parameter substitution
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>the first parameter
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>the second parameter
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array1=(the first array)
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array2=(the second array)
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print -l $array1 ${array2}
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0:Basic array parameter substitution
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>the
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>first
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>array
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>the
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>second
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>array
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setopt ksharrays
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print -l $array1 ${array2}
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unsetopt ksharrays
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0:Basic ksharray substitution
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>the
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>the
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setopt shwordsplit
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print -l $foo ${bar}
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unsetopt shwordsplit
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0:Basic shwordsplit option handling
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>the
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>first
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>parameter
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>the
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>second
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>parameter
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print $+foo ${+foo} $+notappearinginthistest ${+notappearinginthistest}
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0:$+...
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>1 1 0 0
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set1=set1v
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null1=
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print ${set1:-set1d} ${set1-set2d} ${null1:-null1d} ${null1-null2d} x
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print ${unset1:-unset1d} ${unset1-unset2d} x
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0:${...:-...} and ${...-...}
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>set1v set1v null1d x
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>unset1d unset2d x
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set2=irrelevant
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print ${set1:=set1d} ${set2::=set2d}
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print $set2
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wasnull1=
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wasnull2=
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print ${wasnull1=wasnull1d} ${wasnull2:=wasnull2d}
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print $wasnull1 $wasnull2
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0:${...:=...}, ${...::=...}, ${...=...}
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>set1v set2d
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>set2d
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>wasnull2d
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>wasnull2d
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(print ${set1:?okhere}; print ${unset1:?exiting1}; print not reached;)
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(print ${null1?okhere}; print ${null1:?exiting2}; print not reached;)
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1:${...:?...}, ${...?...}
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>set1v
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>
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?(eval):1: unset1: exiting1
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?(eval):2: null1: exiting2
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print ${set1:+word1} ${set1+word2} ${null1:+word3} ${null1+word4}
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print ${unset1:+word5} ${unset1+word6}
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0:${...:+...}, ${...+...}
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>word1 word2 word4
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>
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str1='This is very boring indeed.'
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print ${str1#*s}
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print ${str1##*s}
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print $str1##s
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0:${...#...}, ${...##...}
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> is very boring indeed.
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> very boring indeed.
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>This is very boring indeed.##s
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str2='If you'\''re reading this you should go and fix some bugs instead.'
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print ${str2%d*}
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print ${str2%%d*}
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0:${...%...}, ${...%%...}
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>If you're reading this you should go and fix some bugs instea
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>If you're rea
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str1='does match'
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str2='does not match'
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print ${str1:#does * match}
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print ${str2:#does * match}
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0:${...:#...}
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>does match
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>
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array1=(arthur boldly claws dogs every fight)
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print ${array1:#[aeiou]*}
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print ${(M)array1:#[aeiou]*}
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0:${...:#...}, ${(M)...:#...} with array
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>boldly claws dogs fight
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>arthur every
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str1="$array1"
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print ${str1/[aeiou]*g/a braw bricht moonlicht nicht the nic}
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print ${(S)str1/[aeiou]*g/relishe}
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0:scalar ${.../.../...}, ${(S).../.../...}
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>a braw bricht moonlicht nicht the nicht
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>relishes every fight
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print ${array1/[aeiou]*/Y}
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print ${(S)array1/[aeiou]*/Y}
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0:array ${.../.../...}, ${(S).../.../...}
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>Y bY clY dY Y fY
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>Yrthur bYldly clYws dYgs Yvery fYght
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str1='o this is so, so so very dull'
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print ${str1//o*/Please no}
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print ${(S)str1//o*/Please no}
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0:scalar ${...//.../...}, ${(S)...//.../...}
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>Please no
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>Please no this is sPlease no, sPlease no sPlease no very dull
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print ${array1//[aeiou]*/Y}
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print ${(S)array1//[aeiou]*/Y}
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0:array ${...//.../...}, ${(S)...//.../...}
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>Y bY clY dY Y fY
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>YrthYr bYldly clYws dYgs YvYry fYght
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print ${array1:/[aeiou]*/expletive deleted}
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0:array ${...:/...}
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>expletive deleted boldly claws dogs expletive deleted fight
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str1='twocubed'
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array=(the number of protons in an oxygen nucleus)
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print $#str1 ${#str1} "$#str1 ${#str1}" $#array ${#array} "$#array ${#array}"
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0:${#...}, $#...
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>8 8 8 8 8 8 8 8
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array=(once bitten twice shy)
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print IF${array}THEN
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print IF${^array}THEN
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0:basic ${^...}
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>IFonce bitten twice shyTHEN
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>IFonceTHEN IFbittenTHEN IFtwiceTHEN IFshyTHEN
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# Quote ${array} here because {...,...} doesn't like unquoted spaces.
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print IF{"${array}",THEN}ELSE
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print IF{${^array},THEN}ELSE
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0:combined ${^...} and {...,...}
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>IFonce bitten twice shyELSE IFTHENELSE
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>IFonceELSE IFTHENELSE IFbittenELSE IFTHENELSE IFtwiceELSE IFTHENELSE IFshyELSE IFTHENELSE
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str1='one word'
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print -l $str1 ${=str1} "split ${=str1}wise"
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0:${=...}
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>one word
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>one
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>word
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>split one
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>wordwise
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str1='*'
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print $str1 ${~str1} $~str1
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setopt globsubst
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print $str1
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unsetopt globsubst
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0:${~...} and globsubst
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>* boringfile evenmoreboringfile boringfile evenmoreboringfile
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>boringfile evenmoreboringfile
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print -l "${$(print one word)}" "${=$(print two words)}"
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0:splitting of $(...) inside ${...}
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>one word
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>two
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>words
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print -l "${(f)$(print first line\\nsecond line\\nthird line)}"
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0:${(f)$(...)}
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>first line
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>second line
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>third line
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print -l ${(A)newarray=splitting by numbers}
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print -l ${(A)=newarray::=splitting by spaces, actually}
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0:${(A)...=...}, ${(A)...::=...}
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>splitting by numbers
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>splitting
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>by
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>spaces,
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>actually
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newarray=("split me" "split me" "I\'m yours")
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print -l "${(@)newarray}"
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0:"${(@)...}"
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>split me
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>split me
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>I'm yours
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foo='$(print Howzat usay)'
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print -l ${(e)foo}
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0:${(e)...}
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>Howzat
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>usay
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foo='`print Howzat usay`'
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print -l ${(e)foo}
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0:Regress ${(e)...} with backticks (see zsh-workers/15871)
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>Howzat
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>usay
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foo='I'\''m nearly out of my mind with tedium'
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bar=foo
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print ${(P)bar}
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0:${(P)...}
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>I'm nearly out of my mind with tedium
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foo=(I could be watching that programme I recorded)
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print ${(o)foo}
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print ${(oi)foo}
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print ${(O)foo}
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print ${(Oi)foo}
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0:${(o)...}, ${(O)...}
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>I I be could programme recorded that watching
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>be could I I programme recorded that watching
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>watching that recorded programme could be I I
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>watching that recorded programme I I could be
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foo=(yOU KNOW, THE ONE WITH wILLIAM dALRYMPLE)
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bar=(doing that tour of India.)
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print ${(L)foo}
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print ${(U)bar}
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0:${(L)...}, ${(U)...}
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>you know, the one with william dalrymple
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>DOING THAT TOUR OF INDIA.
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foo='instead here I am stuck by the computer'
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print ${(C)foo}
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0:${(C)...}
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>Instead Here I Am Stuck By The Computer
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foo=$'\x7f\x00'
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print ${(V)foo}
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0:${(V)...}
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>^?^@
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foo='playing '\''stupid'\'' "games" \w\i\t\h $quoting.'
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print -r ${(q)foo}
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print -r ${(qq)foo}
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print -r ${(qqq)foo}
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print -r ${(qqqq)foo}
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0:${(q...)...}
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>playing\ \'stupid\'\ \"games\"\ \\w\\i\\t\\h\ \$quoting.
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>'playing '\''stupid'\'' "games" \w\i\t\h $quoting.'
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>"playing 'stupid' \"games\" \\w\\i\\t\\h \$quoting."
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>$'playing \'stupid\' "games" \\w\\i\\t\\h $quoting.'
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foo="'and now' \"even the pubs\" \\a\\r\\e shut."
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print -r ${(Q)foo}
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0:${(Q)...}
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>and now even the pubs are shut.
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psvar=(dog)
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setopt promptsubst
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foo='It shouldn'\''t $(happen) to a %1v.'
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bar='But `echo what can you do\?`'
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print -r ${(%)foo}
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print -r ${(%%)bar}
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0:${(%)...}
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>It shouldn't $(happen) to a dog.
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>But what can you do?
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foo='unmatched "'
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print ${(QX)foo}
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1:${(QX)...}
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?(eval):2: unmatched "
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array=(characters in an array)
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print ${(c)#array}
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0:${(c)#...}
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>22
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print ${(w)#array}
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str='colon::bolon::solon'
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print ${(ws.:.)#str}
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print ${(Ws.:.)#str}
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0:${(w)...}, ${(W)...}
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>4
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>3
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>5
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typeset -A assoc
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assoc=(key1 val1 key2 val2)
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print ${(o)assoc}
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print ${(ok)assoc}
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print ${(ov)assoc}
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print ${(okv)assoc}
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0:${(k)...}, ${(v)...}
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>val1 val2
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>key1 key2
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>val1 val2
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>key1 key2 val1 val2
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foo=(resulting words uproariously padded)
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print ${(pl.10..\x22..X.)foo}
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0:${(pl...)...}
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>Xresulting """"Xwords roariously """Xpadded
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foo=(why in goodness name am I doing this)
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print ${(r.5..!..?.)foo}
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0:${(r...)...}
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>why?! in?!! goodn name? am?!! I?!!! doing this?
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array=(I\'m simply putting a brave face on)
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print ${(j:--:)array}
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0:${(j)...}
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>I'm--simply--putting--a--brave--face--on
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print ${(F)array}
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0:${(F)...}
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>I'm
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>simply
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>putting
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>a
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>brave
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>face
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>on
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string='zometimez zis getz zplit on a z'
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print -l ${(s?z?)string}
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0:${(s...)...}
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>ometime
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>
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>is get
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>
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>plit on a
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str=s
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arr=(a)
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typeset -A ass
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ass=(a a)
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integer i
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float f
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print ${(t)str} ${(t)arr} ${(t)ass} ${(t)i} ${(t)f}
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0:${(t)...}
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>scalar array association-local integer-local float-local
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# it's not quite clear that these are actually right unless you know
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# the algorithm: search along the string for the point at which the
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# first (last) match occurs, for ## (%%), then take the shortest possible
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# version of that for # (%). it's as good a definition as anything.
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string='where is the white windmill, whispered walter wisely'
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print ${(S)string#h*e}
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print ${(S)string##h*e}
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print ${(S)string%h*e}
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print ${(S)string%%h*e}
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0:${(S)...#...} etc.
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>wre is the white windmill, whispered walter wisely
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>wly
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>where is the white windmill, wred walter wisely
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>where is the white windmill, wly
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setopt extendedglob
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print ${(SI:1:)string##w[^[:space:]]# }
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print ${(SI:1+1:)string##w[^[:space:]]# }
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print ${(SI:1+1+1:)string##w[^[:space:]]# }
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print ${(SI:1+1+1+1:)string##w[^[:space:]]# }
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0:${(I:...:)...}
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>is the white windmill, whispered walter wisely
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>where is the windmill, whispered walter wisely
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>where is the white whispered walter wisely
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>where is the white windmill, walter wisely
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print ${(MSI:1:)string##w[^[:space:]]# }
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0:${(M...)...}
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>where
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print ${(R)string//w[a-z]# #}
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0:${(R)...}
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>is the ,
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# This (1) doesn't work with // or /
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# (2) perhaps ought to be 18, to be consistent with normal zsh
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# substring indexing and with backreferences.
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print ${(BES)string##white}
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0:${(BE...)...}
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>14 19
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print ${(NS)string##white}
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0:${(N)...}
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>5
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string='abcdefghijklmnopqrstuvwxyz'
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print ${${string%[aeiou]*}/(#m)?(#e)/${(U)MATCH}}
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0:Rule 1: Nested substitutions
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>abcdefghijklmnopqrsT
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array=(et Swann avec cette muflerie intermittente)
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string="qui reparaissait chez lui"
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print ${array[4,5]}
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print ${array[4,5][1]}
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print ${array[4,5][1][2,3]}
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print ${string[4,5]}
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print ${string[4,5][1]}
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0:Rule 2: Parameter subscripting
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>cette muflerie
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>cette
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>et
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> r
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>
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foo=stringalongamax
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print ${${(P)foo[1,6]}[1,3]}
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0:Rule 3: Parameter Name Replacement
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>qui
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print "${array[5,6]}"
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print "${(j.:.)array[1,2]}"
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0:Rule 4: Double-Quoted Joining
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>muflerie intermittente
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>et:Swann
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print "${${array}[5,7]}"
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print "${${(@)array}[1,2]}"
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0:Rule 5: Nested Subscripting
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>wan
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>et Swann
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print "${${(@)array}[1,2]#?}"
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print "${(@)${(@)array}[1,2]#?}"
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0:Rule 6: Modifiers
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>t Swann
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>t wann
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array=(she sells z shells by the z shore)
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(IFS='+'; print ${(s.s.)array})
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0:Rule 7: Forced Joining, and 8: Forced splitting
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>he+ ell +z+ hell +by+the+z+ hore
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setopt shwordsplit
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string='another poxy boring string'
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print -l ${${string}/o/ }
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unsetopt shwordsplit
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0:Rule 9: Shell Word Splitting
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>an
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>ther
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>p
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>xy
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>b
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>ring
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>string
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setopt nonomatch
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foo='b* e*'
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print ${(e)~foo}
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print ${(e)~=foo}
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0:Rule 10: Re-Evaluation
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>b* e*
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>boringfile evenmoreboringfile
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# ${bar} -> $bar here would yield "bad substitution".
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bar=confinement
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print ${(el.20..X.)${bar}}
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0:Rule 11: Padding
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>XXXXXXXXXconfinement
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foo=(bar baz)
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bar=(ax1 bx1)
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print "${(@)${foo}[1]}"
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print "${${(@)foo}[1]}"
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print -l ${(s/x/)bar}
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print -l ${(j/x/s/x/)bar}
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print -l ${(s/x/)bar%%1*}
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0:Examples in manual on parameter expansion
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>b
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>bar
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>a
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>1 b
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>1
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>a
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>1
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>b
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>1
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>a
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> b
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set If "this test fails" "we have broken" the shell again
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print -l ${1+"$@"}
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0:Regression test of ${1+"$@"} bug
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>If
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>this test fails
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>we have broken
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>the
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>shell
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>again
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set If "this test fails" "we have broken" the shell again
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print -l "${(A)foo::=$@}"
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print -l $foo
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0:Regression test of "${(A)foo=$@}" bug
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>If this test fails we have broken the shell again
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>If
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>this test fails
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>we have broken
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>the
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>shell
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>again
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set If "this test fails" maybe "we have finally fixed" the shell
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print -l ${=1+"$@"}
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0:Regression test of unfixed ${=1+"$@"} bug
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>If
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>this
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>test
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>fails
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>maybe
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>we
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>have
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>finally
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>fixed
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>the
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>shell
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unset SHLVL
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(( SHLVL++ ))
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print $SHLVL
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0:Unsetting and recreation of numerical special parameters
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>1
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unset manpath
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print $+MANPATH
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manpath=(/here /there)
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print $MANPATH
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unset MANPATH
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print $+manpath
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MANPATH=/elsewhere:/somewhere
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print $manpath
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0:Unsetting and recreation of tied special parameters
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>0
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>/here:/there
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>0
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>/elsewhere /somewhere
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string='look for a match in here'
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if [[ ${string%%(#b)(match)*} = "look for a " ]]; then
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print $match[1] $mbegin[1] $mend[1] $string[$mbegin[1],$mend[1]]
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print $#match $#mbegin $#mend
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else
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print That didn\'t work.
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fi
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0:Parameters associated with backreferences
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>match 12 16 match
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>1 1 1
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string='and look for a MATCH in here'
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if [[ ${(S)string%%(#m)M*H} = "and look for a in here" ]]; then
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print $MATCH $MBEGIN $MEND $string[$MBEGIN,$MEND]
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print $#MATCH
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else
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print Oh, dear. Back to the drawing board.
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fi
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0:Parameters associated with (#m) flag
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>MATCH 16 20 MATCH
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>5
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