| 1 | # Snippets from http://landley.net/notes.html
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| 2 |
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| 3 | ## oils_failures_allowed: 3
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| 4 | ## compare_shells: bash mksh
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| 5 |
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| 6 | #### @Q
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| 7 | # http://landley.net/notes.html#24-06-2020
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| 8 |
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| 9 | # Fix these
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| 10 | case $SH in (dash|mksh|zsh) exit ;; esac
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| 11 |
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| 12 | xx() { echo "${*@Q}";}; xx a b c d
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| 13 | xx() { echo "${@@Q}";}; xx a b c d
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| 14 | ## STDOUT:
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| 15 | 'a' 'b' 'c' 'd'
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| 16 | 'a' 'b' 'c' 'd'
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| 17 | ## END
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| 18 | ## OK osh STDOUT:
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| 19 | a b c d
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| 20 | a b c d
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| 21 | ## END
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| 22 | ## N-I dash/mksh/zsh stdout-json: ""
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| 23 |
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| 24 | #### extglob $IFS 1
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| 25 | # http://landley.net/notes.html#12-06-2020
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| 26 | shopt -s extglob
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| 27 |
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| 28 | touch abc\)d
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| 29 | echo ab+(c?d)
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| 30 |
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| 31 | IFS=c ABC="c?d"
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| 32 | echo ab+($ABC)
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| 33 |
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| 34 | ABC='*'
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| 35 | echo $ABC
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| 36 |
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| 37 | ## STDOUT:
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| 38 | abc)d
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| 39 | ab+( ?d)
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| 40 | abc)d
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| 41 | ## END
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| 42 | ## OK mksh STDOUT:
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| 43 | abc)d
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| 44 | ab+( ?d)
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| 45 | abc)d
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| 46 | ## END
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| 47 |
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| 48 | #### extglob $IFS 2
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| 49 | # http://landley.net/notes.html#17-05-2020
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| 50 |
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| 51 | shopt -s extglob # required for bash, not osh
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| 52 | IFS=x; ABC=cxd; for i in +($ABC); do echo =$i=; done
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| 53 |
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| 54 | ## STDOUT:
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| 55 | =+(c=
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| 56 | =d)=
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| 57 | ## END
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| 58 |
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| 59 | #### char class / extglob
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| 60 | # http://landley.net/notes.html#14-05-2020
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| 61 | shopt -s extglob
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| 62 |
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| 63 | touch l; echo [hello"]"
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| 64 |
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| 65 | touch b
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| 66 | echo [$(echo abc)]
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| 67 |
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| 68 | touch +
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| 69 | echo [+()]
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| 70 | echo [+(])
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| 71 | ## STDOUT:
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| 72 | [hello]
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| 73 | b
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| 74 | +
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| 75 | [+(])
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| 76 | ## END
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| 77 | ## BUG mksh STDOUT:
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| 78 | [hello]
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| 79 | b
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| 80 | [+()]
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| 81 | [+(])
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| 82 | ## END
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| 83 |
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| 84 | #### patsub of $* - http://landley.net/notes.html#23-04-2020
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| 85 | chicken() { echo ${*/b c/ghi}; }; chicken a b c d
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| 86 | ## STDOUT:
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| 87 | a b c d
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| 88 | ## END
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| 89 | ## BUG mksh stdout-json: ""
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| 90 | ## BUG mksh status: 1
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| 91 |
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| 92 |
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| 93 | #### Brace Expansion
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| 94 | # http://landley.net/notes.html#04-01-2020
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| 95 |
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| 96 | HOME=/home/foo
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| 97 |
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| 98 | echo {~,~root}/pwd
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| 99 | echo \{~,~root}/pwd
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| 100 | echo ""{~,~root}/pwd
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| 101 |
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| 102 | ## STDOUT:
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| 103 | /home/foo/pwd /root/pwd
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| 104 | {~,~root}/pwd
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| 105 | ~/pwd ~root/pwd
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| 106 | ## END
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| 107 | ## OK mksh STDOUT:
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| 108 | ~/pwd ~root/pwd
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| 109 | {~,~root}/pwd
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| 110 | ~/pwd ~root/pwd
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| 111 | ## END
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| 112 |
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| 113 | #### {abc}<<< - http://landley.net/notes-2019.html#09-12-2019
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| 114 | { echo; } {abc}<<< walrus
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| 115 | cat <&$abc
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| 116 | ## STDOUT:
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| 117 |
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| 118 | walrus
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| 119 | ## END
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| 120 | ## N-I mksh stdout-json: ""
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| 121 | ## N-I mksh status: 1
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| 122 |
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| 123 | #### slice of @ and @ - http://landley.net/notes.html#23-04-2020
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| 124 | IFS=x; X=x; eval abc=a${X}b
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| 125 |
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| 126 | chicken() { for i in "${@:3:5}"; do echo =$i=; done; } ; chicken ab cd ef gh ij kl mn op qr
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| 127 |
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| 128 | chicken() { for i in "${*:3:5}"; do echo =$i=; done; } ; chicken ab cd ef gh ij kl mn op qr
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| 129 |
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| 130 | ## STDOUT:
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| 131 | =ef=
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| 132 | =gh=
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| 133 | =ij=
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| 134 | =kl=
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| 135 | =mn=
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| 136 | =ef gh ij kl mn=
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| 137 | ## END
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| 138 | ## N-I mksh stdout-json: ""
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| 139 | ## N-I mksh status: 1
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| 140 |
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