.editorconfig: Add EditorConfig for deterministic whitespaceoelint-cleanup-1-whitespace

Add an .editorconfig at the layer root encoding the Yocto Recipe Style
Guide whitespace rules (spaces, 4-wide, no tabs, trimmed trailing
whitespace, final newline), mirroring meta-openembedded's config.

Editors apply it automatically on save and it can be gated in CI with
editorconfig-checker, giving deterministic enforcement that the
oelint-adv whitespace auto-fixes cannot provide.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

1 files changed, 32 insertions, 0 deletions

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 000000000..51367ad58
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,32 @@
+# EditorConfig: deterministic whitespace enforcement for a Yocto/OE layer.
+# https://editorconfig.org — every modern editor applies these on save, and CI
+# can gate them with `editorconfig-checker`. Mirrors meta-openembedded's config
+# and the Yocto Recipe Style Guide: spaces, 4 wide, no tabs, trimmed, LF, final
+# newline. This complements oelint-adv (which handles semantic rules) and removes
+# the need for oelint's non-deterministic whitespace auto-fixes.
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+charset = utf-8
+indent_style = space
+indent_size = 4
+
+# Makefiles require literal tabs.
+[Makefile]
+indent_style = tab
+
+# Markdown uses trailing whitespace for hard line breaks.
+[*.md]
+trim_trailing_whitespace = false
+
+# Never normalise patches — their bytes must match upstream exactly.
+[*.{patch,diff}]
+end_of_line = unset
+insert_final_newline = unset
+trim_trailing_whitespace = unset
+charset = unset
+indent_style = unset
+indent_size = unset