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#!/usr/bin/env bash |
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# |
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# Test combination of var ops. |
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# |
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# NOTE: There are also slice tests in {array,arith-context}.test.sh. |
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|
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#### String slice |
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foo=abcdefg |
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echo ${foo:1:3} |
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## STDOUT: |
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bcd |
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## END |
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|
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#### Cannot take length of substring slice |
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# These are runtime errors, but we could make them parse time errors. |
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v=abcde |
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echo ${#v:1:3} |
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## status: 1 |
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## OK osh status: 2 |
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# zsh actually implements this! |
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## OK zsh stdout: 3 |
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## OK zsh status: 0 |
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|
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#### Out of range string slice: begin |
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# out of range begin doesn't raise error in bash, but in mksh it skips the |
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# whole thing! |
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foo=abcdefg |
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echo _${foo:100:3} |
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echo $? |
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## STDOUT: |
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_ |
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0 |
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## END |
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## BUG mksh stdout-json: "\n0\n" |
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|
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#### Out of range string slice: length |
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# OK in both bash and mksh |
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foo=abcdefg |
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echo _${foo:3:100} |
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echo $? |
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## STDOUT: |
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_defg |
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0 |
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## END |
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## BUG mksh stdout-json: "_defg\n0\n" |
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|
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#### String slice: negative begin |
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foo=abcdefg |
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echo ${foo: -4:3} |
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## OK osh stdout: |
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## stdout: def |
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|
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#### String slice: negative second arg is position, not length |
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foo=abcdefg |
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echo ${foo:3:-1} ${foo: 3: -2} ${foo:3 :-3 } |
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## OK osh stdout: |
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## stdout: def de d |
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## BUG mksh stdout: defg defg defg |
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|
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#### strict-word-eval with string slice |
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set -o strict-word-eval || true |
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echo slice |
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s='abc' |
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echo -${s: -2}- |
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## STDOUT: |
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slice |
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## END |
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## status: 1 |
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## N-I bash status: 0 |
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## N-I bash STDOUT: |
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slice |
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-bc- |
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# END |
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## N-I mksh/zsh status: 1 |
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## N-I mksh/zsh stdout-json: "" |
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|
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#### String slice with math |
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# I think this is the $(()) language inside? |
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i=1 |
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foo=abcdefg |
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echo ${foo: i+4-2 : i + 2} |
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## stdout: def |
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|
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#### Slice undefined |
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echo -${undef:1:2}- |
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set -o nounset |
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echo -${undef:1:2}- |
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echo -done- |
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## STDOUT: |
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-- |
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## END |
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## status: 1 |
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# mksh doesn't respect nounset! |
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## BUG mksh status: 0 |
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## BUG mksh STDOUT: |
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-- |
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-- |
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-done- |
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## END |
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|
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#### Slice UTF-8 String |
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# mksh slices by bytes. |
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foo='--μ--' |
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echo ${foo:1:3} |
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## stdout: -μ- |
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## BUG mksh stdout: -μ |
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|
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#### Slice string with invalid UTF-8 results in empty string and warning |
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s=$(echo -e "\xFF")bcdef |
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echo -${s:1:3}- |
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## status: 0 |
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## stdout-json: "--\n" |
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## stderr-json: "osh warning: Invalid start of UTF-8 character\n" |
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## BUG bash/mksh/zsh status: 0 |
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## BUG bash/mksh/zsh stdout-json: "-bcd-\n" |
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## BUG bash/mksh/zsh stderr-json: "" |
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|
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|
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#### Slice string with invalid UTF-8 with strict-word-eval |
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set -o strict-word-eval || true |
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echo slice |
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s=$(echo -e "\xFF")bcdef |
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echo -${s:1:3}- |
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## status: 1 |
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## stdout-json: "slice\n" |
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## N-I mksh/zsh status: 1 |
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## N-I mksh/zsh stdout-json: "" |
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## N-I bash status: 0 |
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## N-I bash stdout-json: "slice\n-bcd-\n" |
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|
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#### Lower Case with , and ,, |
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x='ABC DEF' |
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echo ${x,} |
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echo ${x,,} |
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## STDOUT: |
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aBC DEF |
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abc def |
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## END |
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## N-I mksh/zsh stdout-json: "" |
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## N-I mksh/zsh status: 1 |
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|
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|
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#### Upper Case with ^ and ^^ |
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x='abc def' |
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echo ${x^} |
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echo ${x^^} |
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## STDOUT: |
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Abc def |
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ABC DEF |
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## END |
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## N-I mksh/zsh stdout-json: "" |
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## N-I mksh/zsh status: 1 |
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|
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#### Lower Case with constant string (VERY WEIRD) |
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x='AAA ABC DEF' |
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echo ${x,A} |
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echo ${x,,A} # replaces every A only? |
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## STDOUT: |
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aAA ABC DEF |
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aaa aBC DEF |
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## END |
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## N-I mksh/zsh stdout-json: "" |
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## N-I mksh/zsh status: 1 |
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|
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#### Lower Case glob |
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x='ABC DEF' |
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echo ${x,[d-f]} |
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echo ${x,,[d-f]} # This seems buggy, it doesn't include F? |
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## STDOUT: |
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ABC DEF |
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ABC deF |
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## END |
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## N-I mksh/zsh stdout-json: "" |
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## N-I mksh/zsh status: 1 |
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|
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#### ${x@Q} |
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x="FOO'BAR spam\"eggs" |
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eval "new=${x@Q}" |
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test "$x" = "$new" && echo OK |
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## STDOUT: |
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OK |
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## END |
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## N-I zsh stdout-json: "" |
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## N-I zsh status: 1 |
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