Change tagline, fix comments

.editorconfig

@@ -0,0 +1,14 @@
+# Code styles for Fawkss.
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = tab
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false

Makefile

@@ -88,20 +88,27 @@ test-after:
 	@printf ">> $(BOLD)Finished executing tests.$(RESET)\n"
 
 $(TESTS):
+    # Generate temporary test files from concatenated original.
 	@awk "/--- TEST ---/ {f=1;next} /--- EXPECTED ---/ {exit} f" $@ >> $@.test.$(TMPPID)
 	@awk "/--- EXPECTED ---/ {f=1;next} /--- END ---/ {exit} f" $@ >> $@.expected.$(TMPPID)
 
+    # Calculate time and execute Fawkss with test file.
+	$(eval ts = $(shell date +"%s%3N"))
 	@$(FAWKSS) $@.test.$(TMPPID) > $@.actual.$(TMPPID)
-	@printf ">> $(BOLD)Testing file '$@'...$(RESET) "
+	$(eval te = $(shell date +"%s%3N"))
 
+    # Generate diff between expected and actual results and print back to user.
 	@result=$$($(DIFF) -ud $@.actual.$(TMPPID) $@.expected.$(TMPPID) | tail -n +3); \
-	if [ -z "$${result}" ]; then                                                    \
-		printf "$(GREEN)OK$(RESET)\n";                                              \
+	tt=`echo "$(ts) $(te)" | awk '{printf "(%.3fs)\n", (($$2-$$1)/1000)}'`;         \
+	printf ">> $(BOLD)Testing file '$@'...$(RESET) ";                               \
+	if [ -z "$$result" ]; then                                                      \
+		printf "$(GREEN)OK$(RESET) $$tt\n";                                         \
 	else                                                                            \
 		printf "$(RED)FAIL$(RESET)\n";                                              \
-		echo "$${result}";                                                          \
+		echo "$$result";                                                            \
 	fi                                                                              \
 
+    # Clean up temporary files.
 	@rm -f $@.test.$(TMPPID) $@.expected.$(TMPPID) $@.actual.$(TMPPID)
 
 ## Show usage information for this Makefile.

README.md

@@ -1,4 +1,4 @@
-# Fawkss — The simple CSS preprocessor [![MIT License][license-svg]][license-url]
+# Fawkss — The [ig]noble CSS preprocessor [![MIT License][license-svg]][license-url]
 
 Fawkss [fɔːks] is a simple CSS preprocessor built as a single AWK (nawk/gawk/mawk) script. Syntactically, it borrows as much as possible from the SASS language, for convenience and familiarity.
 
@@ -8,10 +8,10 @@ This is more of a fun project than a production-ready piece of software, though
 
 Currently, the following features are implemented:
 
-  * C99/C++-style comments (.i.e. `// This is a comment`)
+  * C99/C++-style comments (i.e. `// This is a comment`)
   * Variables
 
-A full test-suite is provided (depending only on Bash and AWK), which should serve as a good example of the existing feature-set.
+A full test-suite is provided (depending only on `make` and `awk`), which should serve as a good example of the existing feature-set.
 
 ## Roadmap
 
@@ -19,6 +19,10 @@ It is intended that the script never balloons to more than ~1000 lines of code.
 
 That being said, I do not plan to implement any context-sensitive functionality (such as nesting etc.), which may be nigh-impossible in AWK anyways. Consider it a feature.
 
+## Testing & Documentation
+
+A `Makefile` is provided for running tests and producing documentation for Fawkss. Run `make help` in the project root for more information.
+
 ## Are you kidding me?
 
 Nope. I wouldn't suggest you actually use this for anything, though.

fawkss

@@ -1,7 +1,7 @@
 #!/usr/bin/awk -f
 #
-# Fawkss — The simple CSS preprocessor.
-# =====================================
+# Fawkss — The [ig]noble CSS preprocessor.
+# ========================================
 #
 # Fawkss is a CSS preprocessor for people who dislike CSS preprocessors. It
 # implements a subset of the SCSS syntax while remaining relatively simple.
@@ -37,6 +37,12 @@ function trim(str, chars) {
 	return substr(str, RSTART, RLENGTH)
 }
 
+# > Function `file_exists` checks if file pointed to by `filename` exists, and
+# > returns `1` if true, `0` if false.
+function file_exists(filename) {
+	return (system("[ -e '" filename "' ]") == 0) ? 1 : 0;
+}
+
 # Initialization
 # --------------
 #
@@ -76,7 +82,7 @@ $0 ~ rules["variable-define"] {
 	name = trim(substr(token[1], index(token[1], "$")))
 	value = trim(substr(token[2], 0, lastindex(token[2], ";") - 1))
 
-	# Assign variable to global variables table.
+	# Assign variable to the global variables table.
 	variables[name] = value
 	next
 }
@@ -94,7 +100,7 @@ $0 ~ rules["variable-define"] {
 # >     :root{background: white;} // Another inline comment.
 # >
 # > As opposed to regular CSS comments (i.e. `/* */`), inline comments are removed
-# > from the processed result. Inline comments inside string are not removed.
+# > from the processed result. Inline comments inside strings are not removed.
 $0 ~ rules["comment"] {
 	# Remove any special cases from the line.
 	while (match($0, rules["comment-exception"])) {
@@ -149,7 +155,7 @@ $0 ~ rules["variable-name"] {
 # -------------
 #
 # This block contains line-printing rules, for results generated in the above
-# blocks. 
+# blocks.
 #
 # > Match empty line. Consecutive empty lines do not print, and are instead
 # > squashed down to a single line.

tests/03-includes.scss

@@ -0,0 +1,21 @@
+//
+// Simple include tests for Fawkss.
+//
+
+--- TEST ---
+
+@include "includes/partial"
+@include "includes/full.scss"
+
+--- EXPECTED ---
+
+.partial {
+	content: 'This is a partial';
+}
+
+.full {
+	content: 'This is a full include';
+	color: white;
+}
+
+--- END ---

tests/includes/_partial.scss

@@ -0,0 +1,5 @@
+$col-white: #fff;
+
+.partial {
+	content: 'This is a partial';
+}

tests/includes/full.scss

@@ -0,0 +1,4 @@
+.full {
+	content: 'This is a full include';
+	color $col-white;
+}