Add yq linter (#657)

README.md

@@ -217,6 +217,7 @@ Other dedicated linters that are built-in are:
 | [woke][woke]                           | `woke`                 |
 | [write-good][write-good]               | `write_good`           |
 | [yamllint][yamllint]                   | `yamllint`             |
+| [yq][yq]                               | `yq`                   |
 | [zsh][zsh]                             | `zsh`                  |
 
 ## Custom Linters
@@ -566,3 +567,4 @@ busted tests/
 [hledger]: https://hledger.org/
 [systemd-analyze]: https://man.archlinux.org/man/systemd-analyze.1
 [awk]: https://www.gnu.org/software/gawk/
+[yq]: https://mikefarah.gitbook.io/yq

lua/lint/linters/yq.lua

@@ -0,0 +1,10 @@
+return {
+  cmd = "yq",
+  stdin = true,
+  stream = "stderr",
+  ignore_exitcode = true,
+  parser = require("lint.parser").from_pattern("line (%d+): (.+)", {
+    "lnum",
+    "message",
+  }, nil, { source = "yq" }),
+}