[ci] Add spelling checks #20

7D78

	name: Spellcheck PR Diff

	on:
	pull_request:
	branches:
	- master

	jobs:
	spellcheck:
	name: Spellcheck PR Diff
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Install aspell
	run: sudo apt-get update && sudo apt-get install -y aspell

	- name: Run aspell on added lines
	run: \|
	git fetch origin master

	git diff --unified=0 origin/master \| \
	awk '
	BEGIN { filename=""; lineno=0 }
	/^diff --git/ {
	match($0, /^diff --git a\/.* b\/(.*)$/, m);
	filename = m[1];
	}
	/^\+\+\+/ { next }
	/^@@/ {
	match($0, /\+([0-9]+)/, m);
	lineno = m[1];
	next;
	}
	/^\+/ {
	text = substr($0, 2);
	cmd = "echo \"" text "\" \| aspell --mode=none list --lang=en \| sort -u";
	while ((cmd \| getline word) > 0) {
	if (word != "") {
	printf "::error file=%s,line=%d::Possible misspelling: %s\n", filename, lineno, word;
	}
	}
	close(cmd);
	lineno++;
	}
	'

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