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 | rm * # setup
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26 | # http://landley.net/notes.html#12-06-2020
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27 | shopt -s extglob
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28 |
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29 | touch abc\)d
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30 | echo ab+(c?d)
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31 |
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32 | IFS=c ABC="c?d"
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33 | echo ab+($ABC)
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34 |
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35 | ABC='*'
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36 | echo $ABC
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37 |
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38 | ## STDOUT:
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39 | abc)d
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40 | ab+( ?d)
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41 | _tmp abc)d
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42 | ## END
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43 | ## OK mksh STDOUT:
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44 | abc)d
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45 | ab+( ?d)
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46 | _tmp abc)d
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47 | ## END
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48 |
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49 | #### extglob $IFS 2
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50 | # http://landley.net/notes.html#17-05-2020
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51 |
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52 | shopt -s extglob # required for bash, not osh
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53 | IFS=x; ABC=cxd; for i in +($ABC); do echo =$i=; done
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54 |
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55 | ## STDOUT:
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56 | =+(c=
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57 | =d)=
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58 | ## END
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59 |
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60 | #### char class / extglob
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61 | # http://landley.net/notes.html#14-05-2020
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62 | shopt -s extglob
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63 |
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64 | rm *
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65 |
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66 | touch l; echo [hello"]"
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67 |
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68 | touch b
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69 | echo [$(echo abc)]
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70 |
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71 | touch +
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72 | echo [+()]
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73 | echo [+(])
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74 | ## STDOUT:
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75 | [hello]
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76 | b
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77 | +
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78 | [+(])
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79 | ## END
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80 | ## BUG mksh STDOUT:
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81 | [hello]
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82 | b
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83 | [+()]
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84 | [+(])
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85 | ## END
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86 |
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87 | #### patsub of $* - http://landley.net/notes.html#23-04-2020
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88 | chicken() { echo ${*/b c/ghi}; }; chicken a b c d
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89 | ## STDOUT:
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90 | a b c d
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91 | ## END
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92 | ## BUG mksh stdout-json: ""
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93 | ## BUG mksh status: 1
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94 |
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95 |
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96 | #### Brace Expansion
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97 | # http://landley.net/notes.html#04-01-2020
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98 |
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99 | HOME=/home/foo
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100 |
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101 | echo {~,~root}/pwd
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102 | echo \{~,~root}/pwd
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103 | echo ""{~,~root}/pwd
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104 |
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105 | ## STDOUT:
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106 | /home/foo/pwd /root/pwd
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107 | {~,~root}/pwd
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108 | ~/pwd ~root/pwd
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109 | ## END
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110 | ## OK mksh STDOUT:
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111 | ~/pwd ~root/pwd
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112 | {~,~root}/pwd
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113 | ~/pwd ~root/pwd
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114 | ## END
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115 |
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116 | #### {abc}<<< - http://landley.net/notes-2019.html#09-12-2019
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117 | { echo; } {abc}<<< walrus
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118 | cat <&$abc
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119 | ## STDOUT:
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120 |
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121 | walrus
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122 | ## END
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123 | ## N-I mksh stdout-json: ""
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124 | ## N-I mksh status: 1
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125 |
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126 | #### slice of @ and @ - http://landley.net/notes.html#23-04-2020
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127 | IFS=x; X=x; eval abc=a${X}b
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128 |
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129 | chicken() { for i in "${@:3:5}"; do echo =$i=; done; } ; chicken ab cd ef gh ij kl mn op qr
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130 |
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131 | chicken() { for i in "${*:3:5}"; do echo =$i=; done; } ; chicken ab cd ef gh ij kl mn op qr
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132 |
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133 | ## STDOUT:
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134 | =ef=
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135 | =gh=
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136 | =ij=
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137 | =kl=
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138 | =mn=
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139 | =ef gh ij kl mn=
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140 | ## END
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141 | ## N-I mksh stdout-json: ""
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142 | ## N-I mksh status: 1
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143 |
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