Commit Graph

360 Commits

Author SHA1 Message Date
Joseph C. Sible ffbbfcfe25 Use mapM_ and sequence_ instead of reimplementing them 2020-02-09 23:17:52 -05:00
Joseph C. Sible cc424bac11 Use find instead of take 1 and filter 2020-02-09 23:17:52 -05:00
Joseph C. Sible cb01cbf7eb Use mapM instead of implementing a slower version of it 2020-02-09 23:17:52 -05:00
Joseph C. Sible 1e32139f66 Replace mapMaybe and concatMap with list comprehensions 2020-02-09 23:17:52 -05:00
Joseph C. Sible 4d92a2e15c Add getLiteralStringDef and simplify with it 2020-02-09 21:36:38 -05:00
Joseph C. Sible f8648e5465 Switch getLiteralStringExt to Identity where it can never be Nothing 2020-02-09 21:26:42 -05:00
Joseph C. Sible 4fd8de058b Remove more unnecessary uses of fromJust 2020-02-08 23:48:36 -05:00
Joseph C. Sible aaffe38198 Use the Identity monad to avoid unnecessary uses of fromJust 2020-02-08 23:20:54 -05:00
Joseph C. Sible ef51ed3950
Simplify literalEquals 2020-02-08 14:09:17 -05:00
Vidar Holen 9d604ae732
Merge pull request #1822 from yetamrra/arrayindex
SC2191: Tighten index checks
2020-02-08 10:48:07 -08:00
Vidar Holen 1ca0b72329
Merge pull request #1816 from josephcsible/cleanups
Various cleanups and refactorings
2020-02-08 10:38:27 -08:00
Benjamin Gordon 474b23d6e7 SC2191: Tighten index checks
When adding a value containing an equals sign to an indexed array, the
left side is treated as an index if it looks like [N]=val and N is
numeric.  SC2191 currently warns about anything that looks like key=val
even though non-numeric values of key will never be treated as an index.
This causes spurious warnings for the common pattern of building up
program arguments in an array, such as:
  args=(
    --dry-run
    --in="${my_var}"
    --out=/some/path
    -f
  )
  /bin/program "${args[@]}"

Since only numeric expressions can be a valid index for an indexed
array, only emit SC2191 if the left side of a literal string containing
an equals looks numeric.  Other more complicated constructs should still
warn because shellcheck doesn't know if they may evaluate to a numeric
result.  Associative arrays still warn because a non-numeric left side
is a valid subscript.
2020-02-05 16:50:32 -07:00
Joseph C. Sible e820a5642b Adjust a pattern to get rid of a fromJust 2020-02-02 00:40:22 -05:00
Joseph C. Sible 392b57b8e8 Use maybe instead of isJust and fromJust 2020-02-02 00:27:05 -05:00
Joseph C. Sible 6595e14d25 Adjust a pattern to avoid tail 2020-02-02 00:24:24 -05:00
Joseph C. Sible 115ef29079 Use pattern matching instead of head 2020-02-02 00:16:59 -05:00
Joseph C. Sible 76b798394f Use case matching instead of null
Using null followed by a head, tail, or a partial pattern match is
an anti-pattern. Use case matching instead.
2020-02-01 23:07:16 -05:00
Joseph C. Sible 8a005526cc Use drop instead of splitAt since we only use the second half 2020-02-01 23:04:04 -05:00
Joseph C. Sible c29b6afa56 Use null instead of comparing with empty lists 2020-02-01 23:04:04 -05:00
Joseph C. Sible e6e89d68fd Use list comprehensions instead of clunky combinations of map and filter 2020-02-01 23:04:04 -05:00
Joseph C. Sible f25b8bd03a Use gets instead of fmapping the result of get 2020-02-01 22:50:20 -05:00
Joseph C. Sible d7278b95f2 Remove unnecessary "map snd" 2020-02-01 22:50:19 -05:00
Joseph C. Sible 5487b3f229 Use sortOn instead of sortBy and comparing 2020-02-01 22:50:18 -05:00
Joseph C. Sible 28978a8b65 Use maybe instead of fromMaybe and fmap 2020-02-01 22:50:17 -05:00
Joseph C. Sible f5c6771016 Use find instead of listToMaybe and filter 2020-02-01 22:50:16 -05:00
Joseph C. Sible 0f48bb78a5 Remove incorrect otherwise
You're supposed to use otherwise where you need a Boolean, not a pattern
match. This is misleadingly shadowing the real otherwise. Use _ instead.
2020-02-01 22:50:14 -05:00
Joseph C. Sible 93be86f988 Use "drop 1" instead of clumsily rewriting it 2020-02-01 22:50:14 -05:00
Joseph C. Sible 3449e6be21 Get rid of our getOpt, as it already exists as lookup 2020-02-01 22:50:13 -05:00
Joseph C. Sible 2e52c2b56a Use notElem instead of not on the result of elem 2020-02-01 22:50:11 -05:00
Vidar Holen 1696296c0a Make SC2141 trigger more broadly 2020-02-01 16:51:40 -08:00
Marcin Szydelski 93486ed6ac SC2016: disable for mumps -run %XCMD and LOOP%XCMD 2020-01-21 12:43:27 +01:00
Vidar Holen cbcca528ae Merge branch 'iss1724-builtin-support' of https://github.com/jabberabbe/shellcheck into jabberabbe-iss1724-builtin-support 2019-12-21 18:13:07 -08:00
Vidar Holen 83187dafd7 Added a unit test for parsing shell keyword case branches 2019-12-21 17:59:09 -08:00
Gandalf- 3f296a08c1 Issue 1731 Literals in case patterns
https://github.com/koalaman/shellcheck/issues/1731

Any literal except esac is valid pattern in a case statement
2019-12-18 20:23:48 -08:00
Vidar Holen 0f15fa49ba Make SC2230 optional 2019-12-07 16:11:49 -08:00
Vidar Holen 9f578f41a1 Explicitly add 'mappend' for old GHC versions 2019-11-16 11:16:15 -08:00
Vidar Holen 989ac32625
Merge pull request #1734 from gabrielelana/braced-regular-for
Parse regular `for` with body in curly braces
2019-11-15 20:59:51 -08:00
Vidar Holen 2bbfd0570d
Merge pull request #1735 from gabrielelana/quoted-heredoc
Support for heredoc quoted token like `'"FOO"`
2019-11-15 20:27:10 -08:00
Vidar Holen f44624a9c0 Hide <> from Writer to not conflict with Semigroup 2019-11-14 20:02:25 -08:00
Vidar Holen c75bbcbd60 Include missing Semigroup import 2019-11-13 22:10:27 -08:00
Vidar Holen 4a63a3a8bd For SC2256, make sure the complete string is a variable name 2019-11-13 21:48:01 -08:00
Benjamin Gordon 2341a4c683 SC2256: Check for translated strings matching known variables
SC2247 already warns about translated strings that look like $"(foo)" or
$"{foo}".  Since typical use of translated strings is to translate whole
messages, a string like $"foo" is likely to be a similar mistake if foo
is the name of an existing variable.  Conversely, a string like
$"foo bar" is potentially meant to be a message id even if foo is a
known variable.

Add a warning for the $"foo" case, but make it separate from the
existing warning so that projects that reuse variable names as their
message ids can separately disable the new warning.
2019-11-13 16:41:16 -07:00
Vidar Holen 93eca1cb8e Only trigger SC1014 when command is a complete word (fixes #1737) 2019-11-03 13:26:23 -08:00
Vidar Holen e701cf6fad Warn about [ x -ot y ] in POSIX mode 2019-11-03 13:25:35 -08:00
Vidar Holen 5962b01816 Correctly handle empty variables for SC2086 (fixes #1722) 2019-11-03 12:46:25 -08:00
Tito Sacchi 84ca7711c4 Make command-specific checks act on `builtin ...`
Now if shellchecks encounters a command like `builtin cmd ...`
it applies the same check that would be applied to `cmd ...`.
2019-11-01 14:28:00 +01:00
Tito Sacchi 0e0de94045 Fix issue #1724
(bash: missing support for 'builtin' keyword)
Now shellcheck looks for the arguments to 'builtin' to determine
read/written variables. A change in the parser makes sure that
assignments are parsed correctly in commands that start with 'builtin'.
2019-11-01 13:49:17 +01:00
gabriele.lana 699aac589a Support for heredoc quoted token like `'"FOO"`
Fixes #1650
2019-10-26 17:36:32 +02:00
gabriele.lana 30c75340e6 Parse regular `for` with body in curly braces
Fixes #1694
2019-10-26 15:41:46 +02:00
Vidar Holen 4dfd7eb1cf Use single quotes for the format string example in SC2059 2019-10-24 10:33:17 -07:00
Vidar Holen 60f75e5b8a Warn about unexpected characters after ]/]] (fixes #1680) 2019-10-13 20:26:40 -07:00
Vidar Holen f042b0ebd1 Merge branch 'iboss-ptk-read-t-0' 2019-10-12 20:55:32 -07:00
Vidar Holen 764fdcb260 Move failing test to correct check 2019-10-12 20:50:55 -07:00
Vidar Holen 7473d4a743 Make `read -t 0` test more forgiving towards other flags 2019-10-12 20:45:36 -07:00
Vidar Holen 91abd979f2 Merge branch 'read-t-0' of https://github.com/iboss-ptk/shellcheck into iboss-ptk-read-t-0 2019-10-12 20:23:13 -07:00
Vidar Holen afea62de4e Suggest using `$((..))` in `[ 2*3 -eq 6 ]` (fixes #1641) 2019-10-12 19:55:20 -07:00
Supanat Pothivarakorn 7fb399528c Allow `read -t 0` to not require -r flag
since it has specific purpose for checking only
2019-10-02 22:34:43 +07:00
Vidar Holen de9ab4e6ef Fix glob range duplicate warning in [!!] (fixes #1706) 2019-09-28 14:03:11 -07:00
Vidar Holen e01c470598 Suggest quoting case patterns, as for SC2053 (fixes #1682) 2019-09-08 20:08:43 -07:00
Vidar Holen c175971bf0 Make `-f diff` stop saying it found more issues when it didn't. 2019-07-28 20:50:50 -07:00
Vidar Holen 38bb156a1c Warn about $_ in POSIX sh (fixes #1647) 2019-07-21 21:22:16 -07:00
Vidar Holen 023ae5dfda Don't warn about printf '%()T' without corresponding argument 2019-07-20 15:10:41 -07:00
Vidar Holen 788cf17076 Fix bad advice for SC2251 (fixes #1588) 2019-07-04 19:10:14 -07:00
Vidar Holen 78b8e76066 Also mention globbing in SC2206 (fixes #1626) 2019-07-04 17:43:18 -07:00
Vidar Holen 914974bd4f Don't consider `.*` a glob-like regex (fixes #1214) 2019-07-04 17:41:23 -07:00
Vidar Holen c0d3a98fcd Add warning for chmod -r (fixes #1321) 2019-07-04 16:54:42 -07:00
Vidar Holen 380221a02c Recognize `read -ra foo` as arrays (fixes #1636) 2019-07-03 20:40:41 -07:00
Vidar Holen ba2c20a08a Improve message for SC1067 2019-07-03 20:02:14 -07:00
Vidar Holen be1f1c1ab7 Don't count 'readonly x' as a reference to x (fixes #1573) 2019-07-02 20:58:08 -07:00
Vidar Holen bee4303c32 Add an empty Custom.hs to simplify site-specific patching 2019-07-02 20:07:05 -07:00
Vidar Holen ef764b60ca Fix botched variable usage 2019-07-01 23:47:13 -07:00
Vidar Holen 3e3e4fd0cd Avoid defining flags for non-literal parameters 2019-07-01 23:22:09 -07:00
Vidar Holen 561075ea79 Merge branch 'shflags' of https://github.com/yetamrra/shellcheck into yetamrra-shflags 2019-07-01 20:00:28 -07:00
Vidar Holen 9702f1ff9c Handle diffs for files without trailing linefeed 2019-06-30 20:19:10 -07:00
Vidar Holen 544047c5af Warn about ending double quotes just to make $ literal 2019-06-30 18:43:42 -07:00
Vidar Holen 321afa427e Remove unused parse-time AST warnings 2019-06-30 17:38:17 -07:00
Vidar Holen c381c5746f Remove unnecessary lookahead in readDollarLonely 2019-06-30 17:28:15 -07:00
Vidar Holen eeb7ea01c9 Allow SC2103 to be silenced (fixes #1591) 2019-06-30 16:36:45 -07:00
Vidar Holen 3116ed3ae5 Filter warnings by annotations in unit tests 2019-06-30 16:36:03 -07:00
Benjamin Gordon f6ba500d6b Add support for basic shflags semantics
The shflags command-line flags library creates variables at runtime
with a few well-defined functions.  This causes shellcheck to spit out
lots of warnings about unassigned variables, as well as miss warnings
about unused flag variables.

We can address this with two parts:

1. Pretend that the shflags global variables are predefined like other
   shell variables so that shellcheck doesn't expect users to set them.
2. Treat DEFINE_string, DEFINE_int, etc. as new commands that create
   variables, similar to the existing read, local, mapfile, etc.

Part 1 can theoretically be addresssed without this by following sourced
files, but that doesn't help if people are otherwise not following
external sources.

The new behavior is on by default, similar to automatic bats test
behavior.

Addresses #1597
2019-06-25 12:14:54 -06:00
Vidar Holen c5aa171a5f Use mappend over <> for compatibility 2019-06-24 09:02:35 -07:00
Vidar Holen b1aeee564c Add a Diff output format 2019-06-23 20:02:01 -07:00
Vidar Holen e099625e7d Remove unused ioref 2019-06-23 15:50:48 -07:00
Vidar Holen 5242e384a1 Fix error spans for shebang warnings (fixes #1620) 2019-06-23 13:49:08 -07:00
Vidar Holen 7e77bfae49 Improve message for SC2055 2019-06-23 13:48:43 -07:00
Vidar Holen 9059024de6
Merge pull request #1592 from hugopeixoto/fix/SC2016-false-positive
SC2016: Don't trigger when using empty backticks
2019-06-19 19:55:34 -07:00
Vidar Holen 61d2112e71 Add missing JSON1.hs 2019-06-02 13:00:38 -07:00
Vidar Holen 9f0ef5983a Optionally check for unassigned uppercase variables 2019-06-02 10:29:04 -07:00
Vidar Holen 1297ef46d7 Add JSON1 as a separate format, wrap result in an object 2019-06-02 10:28:37 -07:00
Vidar Holen f4be53eb19 Warn about [ -v var ] for POSIX sh 2019-06-02 10:28:20 -07:00
Vidar Holen 3e7c2bfec0 Warn about [ $a != x ] || [ $a != y ] 2019-06-02 09:26:54 -07:00
Hugo Peixoto 07ffcb626e SC2016: Don't trigger when using empty backticks
When using '``' or '```', it should not suggest using double quotes.
2019-05-27 11:03:24 +01:00
Vidar Holen 95b1185882 Inform about ineffectual ! on commands (fixes #1531) 2019-05-22 17:14:28 -07:00
Vidar Holen 8efbecd64a Don't suggest removing braces from $((${x+1})) (fixes #1533) 2019-05-19 15:29:47 -07:00
Vidar Holen 52a9d90e1a
Merge pull request #1580 from virgilwashere/copyright
Update Copyright to year 2019; README linting
2019-05-19 12:03:15 -07:00
Vidar Holen 861b63aa77 Specify 'variable' in require-braces 2019-05-14 18:48:41 -07:00
Benjamin Gordon 64c9c83cc8 SC2250: New optional check for braces around variable references
Always using braces makes it harder to accidentally change a variable by
pasting other text next to it, but the warning is off by default because
it's definitely a style preference.  Omit special and positional
variables from the check because appending additional characters to them
already doesn't change parsing.
2019-05-14 11:01:38 -06:00
Benjamin Gordon aa3b709b5d Track whether braces were present in T_DollarBraced
References of the form $var and ${var} both map to the same structure in
the AST, which prevents any later analysis functions from distinguishing
them.  In preparation for adding checks that need this info, add a Bool
to T_DollarBraced that tracks whether the braces were seen at parsing
time and update all references so that this change is a no-op.
2019-05-14 11:01:38 -06:00
Benjamin Gordon 0358090b3c Refactor definition of special variables.
This ensures that the parser and other places that refer to special
variables can use the same list.
2019-05-14 08:57:56 -06:00
Virgil ea05271fa3 📝 Update Copyright to year 2019 and Markdown linting
- [x] 📝 Update Copyright to year 2019

- [x] 📝 MD009/no-trailing-spaces: Trailing spaces [Expected: 0 or 2; Actual: 1]
- [x] 📝 MD034/no-bare-urls: Bare URL used

- [ ] 📝 ~MD004/ul-style: Unordered list style [Expected: dash; Actual: asterisk]~
- [ ] ~add missing TOC entries~
2019-05-14 20:12:34 +10:00