PMD is currently not working properly for Java classes that use [unnamed
packages](https://docs.oracle.com/javase/specs/jls/se11/html/jls-7.html#jls-7.4.2).
Consider the following Java class that does not contain a `package`
declaration:
```java
public class App {
String getGreeting() {
return "Hello world.";
}
static void main(String... args) {
System.out.println(new App().getGreeting());
}
}
```
Running PMD in the command line agaist the Java class above produces an
output with empty string `""` in the `"Package"` column:
```sh
$ pmd -R category/java/bestpractices.xml -f csv -d './src/main/java/App.java'
Oct 02, 2018 9:10:39 PM net.sourceforge.pmd.PMD processFiles
WARNING: This analysis could be faster, please consider using Incremental Analysis: https://pmd.github.io/pmd-6.7.0/pmd_userdocs_incremental_analysis.html
"Problem","Package","File","Priority","Line","Description","Rule set","Rule"
"1","","/Users/diego/Projects/github.com/dlresende/kata-fizz-buzz/src/main/java/App.java","2","7","System.out.println is used","Best Practices","SystemPrintln"
```
But the pmd.vim handler's current pattern refuses everything coming
from a Java class that does not have a package name (2nd column):
```vim
let l:pattern = '"\(\d\+\)",".\+","\(.\+\)","\(\d\+\)","\(\d\+\)","\(.\+\)","\(.\+\)","\(.\+\)"$'
```
The solution I am proposing is to also accept empty strings as package names.
* Add better support for Haskell stack compiler tools
This commit adds support for `stack` as the executable of a tool. This
follows a pattern that has been implemented for `bundler`'s tool chain.
* Move hlint command to linter file
* Add vader test for stack exec handling
* Update ghc-mod to support stack execution
`ghc-mod` was previously broken into 2 linters.
1. ghc_mod
2. stack_ghc_mod
This additional linter is not necessary with proper support for
executable variables and `stack exec` handling.
* Support stack exec in hfmt
* Support stack in hdevtools
For now, it only detects undefined steps. The nearest `features` dir
above the buffer file is loaded, so step definitions should be found
correctly.
Tested only with Cucumber for Ruby, but it should work for any cucumber
that follows a substantially similar directory structure.
* Add first qmlfmt support
* Add GetCommand() function
- pass --error/-e option
* Add handle unittest
- fix pattern regex
- store col as integer
* Update docs
* Add command callback unit test
* Add fsc as a Scala linter
* Pull reused code into `autoload/ale/` directory
* Include fsc into the README
* Add unit test for testing the scala handler
* Add unit test for scala's fsc linter
* Rename scala unit tests for clarity
* Fix typo in README
* Fix typos in doc/ale.txt
* Fix author headline
* Put methods for fsc commands back into fsc.vim
* Move command_callback tests to correct location
* Rewrite handler test so it actually tests handler
* Clarify description of test in test_scala_handler
* handle multibyte string when linting text with redpen
* fix error when no string is provided, fix test's expect value
* remove ambiguious `==` operator
* Fixed (g)awk linter
* Made it secure, albeit less useful.
* Added gawk handler; the cpplint one was not working?
* Added gawk handler test.
* added warning to gawk handler.
* added gawk command callback test
* added comment about --source
* added back optional commandline option
* Handle flawfinder severity level
* Reverted code allowing Flawfinder to piggyback off of gcc's format handler
* Gave Flawfinder its own format handler and made requested changes.
* If a Perl script compiles, there are only warnings and no errors
* Let the first Perl error or warning win.
Take the following example:
***
sub foo {
my $thing;
***
This might have the following messages when we compile it:
Missing right curly or square bracket at warning.pl line 7, at end of
line
syntax error at warning.pl line 7, at EOF
warning.pl had compilation errors.
With the current behaviour, we just get a "syntax error" message, which
isn't all that helpful. With this patch we get "Missing right curly or
square bracket".
* Fix variable scope and pattern matching syntax
* Use named variable to enhance clarity when matching Perl output
* Add more tests for Perl linter
* Remove unnecessary parens
* Simplify check for pattern match
Switches all vale instances to JSON output and provides an appropriate
handler for that. Without JSON, no end_col is provided and text
highlighting only catches the first character of every result.
* puppet: add test for puppet parser validate
* puppet: handle where parser validate doesn't supply the column
* puppet: add test for when parser validate doesn't supply column
* Fix puppet regex to handle Windows paths
- Re: f224ce8a37
- The issues that prompted the above commit which reverted changes made to `go build` and
`gometalinter` seemed to suggest that the main issue was with gometalinter and that
changes should be put into different commits so they are independent of each other
- This commit reinstates the changes to the `go build` linter which seem to be uncontested
and it also seems absolutely necessary to show errors from all files in the package which
may have caused a build failure.
