simplify

str/Makefile

@@ -1,12 +1,2 @@
-RM = rm -f
-TARGETS = str
-
-all: $(TARGETS)
-
 str: str.c
-	$(CC) -DINCLUDE_ISVALUE=1 -o $@ $@.c
-
-clean:
-	$(RM) $(TARGETS)
-
-.PHONY: all clean
+	$(CC) -include isvalue.c -o $@ $@.c

str/packaging.md

@@ -0,0 +1,40 @@
+# Packaging str
+
+## Files
+
+- `src/str`
+	- Can be moved to a system sources directory if it's desirable to keep
+		system sources on hand. Doesn't reference anything else in the
+		repository.
+
+- `str.1`
+	- Included manual page for `str`. Can be placed in the appropriate
+		manual pages directory. If it displays weirdly and your fix is
+		portable, mail me and I'll probably bring it upstream.
+ 
+- `str.c`
+	- A single C file that builds to a single executable, which should be
+		named `simexec`.
+
+- `simexec`
+	- Program binary. Should be placed in a user-accessible binaries
+		directory.
+
+## Dependencies
+
+- `<sysexits.h>`
+	- Ignored if `EX_USAGE` is already defined.
+
+- C standard library
+
+## Compilation
+
+```
+cc -include isvalue.c -o simexec simexec.c
+```
+
+Or without `<sysexits.h>`:
+
+```
+cc -DEX_USAGE=1 -include isvalue.c -o simexec simexec.c
+```

str/str.c

@@ -5,15 +5,6 @@
 #if !defined EX_USAGE
 #	include <sysexits.h>
 #endif
-#if defined INCLUDE_ISVALUE_C
-#	include "isvalue.c"
-/* This is a special addition to the command that lets `str isvalue "$input"`
- * function as a lightweight replacement to the common `test -n "$input"` or
- * `[ -n "$input" ]`. This will speed up your shellscript execution by a tad
- * ONLY if test(1) isn't already built into your shell (most of the time, it
- * is, and saves you the overhead of spawning a new process, which is greater
- * than the savings of switching from test(1) to this program). */
-#endif
 
 static char *program_name = "str";
 
@@ -43,17 +34,17 @@ int main(int argc, char *argv[]){
 	int i;
 	int r;
 
-	if(argc < 3){
-usage:		fprintf(stderr, "Usage: %s [type] [string...]\n",
-			argv[0] == NULL ? program_name : argv[0]
-		);
-		return EX_USAGE;
+	if(argc >= 3){
+		for(ctype = 0; ctype < (sizeof ctypes) / (sizeof *ctypes);
+				++ctype)
+			if(strcmp(argv[1], ctypes[ctype].name) == 0)
+				goto pass;
 	}
 
-	for(ctype = 0; ctype < (sizeof(ctypes)/sizeof(ctypes[0])); ++ctype)
-		if(strcmp(argv[1], ctypes[ctype].name) == 0)
-			goto pass;
-	goto usage;
+	fprintf(stderr, "Usage: %s [type] [string...]\n",
+		argv[0] == NULL ? program_name : argv[0]);
+
+	return EX_USAGE;
 
 pass:	for(argv += 2, r = 1; *argv != NULL; ++argv)
 		for(i = 0; argv[0][i] != '\0'; ++i)