| 1 | ## compare_shells: dash bash mksh
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| 2 |
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| 3 | # Corner cases in var sub. Maybe rename this file.
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| 4 |
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| 5 | # NOTE: ZSH has interesting behavior, like echo hi > "$@" can write to TWO
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| 6 | # FILES!
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| 7 |
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| 8 | #### Bad var sub
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| 9 | echo ${a&}
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| 10 | ## stdout-json: ""
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| 11 | ## status: 2
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| 12 | ## OK bash/mksh status: 1
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| 13 |
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| 14 | #### Braced block inside ${}
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| 15 | # NOTE: This bug was in bash 4.3 but fixed in bash 4.4.
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| 16 | echo ${foo:-$({ ls /bin/ls; })}
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| 17 | ## stdout: /bin/ls
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| 18 |
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| 19 | #### Nested ${}
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| 20 | bar=ZZ
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| 21 | echo ${foo:-${bar}}
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| 22 | ## stdout: ZZ
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| 23 |
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| 24 | #### Filename redirect with "$@"
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| 25 | # bash - ambiguous redirect -- yeah I want this error
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| 26 | # - But I want it at PARSE time? So is there a special DollarAtPart?
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| 27 | # MultipleArgsPart?
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| 28 | # mksh - tries to create '_tmp/var-sub1 _tmp/var-sub2'
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| 29 | # dash - tries to create '_tmp/var-sub1 _tmp/var-sub2'
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| 30 | fun() {
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| 31 | echo hi > "$@"
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| 32 | }
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| 33 | fun _tmp/var-sub1 _tmp/var-sub2
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| 34 | ## status: 1
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| 35 | ## OK dash status: 2
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| 36 |
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| 37 | #### Descriptor redirect to bad "$@"
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| 38 | # All of them give errors:
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| 39 | # dash - bad fd number, parse error?
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| 40 | # bash - ambiguous redirect
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| 41 | # mksh - illegal file descriptor name
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| 42 | set -- '2 3' 'c d'
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| 43 | echo hi 1>& "$@"
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| 44 | ## status: 1
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| 45 | ## OK dash status: 2
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| 46 |
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| 47 | #### Here doc with bad "$@" delimiter
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| 48 | # bash - syntax error
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| 49 | # dash - syntax error: end of file unexpected
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| 50 | # mksh - runtime error: here document unclosed
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| 51 | #
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| 52 | # What I want is syntax error: bad delimiter!
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| 53 | #
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| 54 | # This means that "$@" should be part of the parse tree then? Anything that
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| 55 | # involves more than one token.
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| 56 | fun() {
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| 57 | cat << "$@"
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| 58 | hi
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| 59 | 1 2
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| 60 | }
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| 61 | fun 1 2
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| 62 | ## status: 2
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| 63 | ## stdout-json: ""
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| 64 | ## OK mksh status: 1
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