fix: completions of executables and running absolute paths on windows

complete.go

@@ -33,7 +33,7 @@ func binaryComplete(query, ctx string, fields []string) ([]string, string) {
 			if len(fileCompletions) != 0 {
 				for _, f := range fileCompletions {
 					name := strings.Replace(query + f, "~", curuser.HomeDir, 1)
-					if info, err := os.Stat(name); err == nil && info.Mode().Perm() & 0100 == 0 {
+					if err := findExecutable(name, false, true); err != nil {
 						continue
 					}
 					completions = append(completions, f)
@@ -51,7 +51,8 @@ func binaryComplete(query, ctx string, fields []string) ([]string, string) {
 			// get basename from matches
 			for _, match := range matches {
 				// check if we have execute permissions for our match
-				if info, err := os.Stat(match); err == nil && info.Mode().Perm() & 0100 == 0 {
+				err := findExecutable(match, true, false)
+				if err != nil {
 					continue
 				}
 				// get basename from match

exec.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"time"
 
@@ -161,15 +162,20 @@ func execCommand(cmd, old string) error {
 }
 
 func lookpath(file string) error { // custom lookpath function so we know if a command is found *and* is executable
-	skip := []string{"./", "/", "../", "~/"}
+	var skip []string
+	if runtime.GOOS == "windows" {
+		skip = []string{"./", "../", "~/", "C:"}
+	} else {
+		skip = []string{"./", "/", "../", "~/"}
+	}
 	for _, s := range skip {
 		if strings.HasPrefix(file, s) {
-			return findExecutable(file)
+			return findExecutable(file, false, false)
 		}
 	}
 	for _, dir := range filepath.SplitList(os.Getenv("PATH")) {
 		path := filepath.Join(dir, file)
-		err := findExecutable(path)
+		err := findExecutable(path, true, false)
 		if err == errNotExec {
 			return err
 		} else if err == nil {

execfile_unix.go

@@ -6,13 +6,19 @@ import (
 	"os"
 )
 
-func findExecutable(path string) error {
+func findExecutable(path string, inPath, dirs bool) error {
 	f, err := os.Stat(path)
 	if err != nil {
 		return err
 	}
+	if dirs {
+		if m := f.Mode(); m & 0111 != 0 {
+			return nil
+		}
+	} else {
 		if m := f.Mode(); !m.IsDir() && m & 0111 != 0 {
 			return nil
 		}
+	}
 	return errNotExec
 }

execfile_windows.go

@@ -7,21 +7,31 @@ import (
 	"os"
 )
 
-func findExecutable(path string) error {
+func findExecutable(path string, inPath, dirs bool) error {
 	nameExt := filepath.Ext(path)
+	pathExts := filepath.SplitList(os.Getenv("PATHEXT"))
+	if inPath {
 		if nameExt == "" {
-		for _, ext := range filepath.SplitList(os.Getenv("PATHEXT")) {
+			for _, ext := range pathExts {
 				_, err := os.Stat(path + ext)
 				if err == nil {
 					return nil
 				}
 			}
-	}
+		} else {
-
 			_, err := os.Stat(path)
 			if err == nil {
+				if contains(pathExts, nameExt) { return nil }
 				return errNotExec
 			}
+		}
+	} else {
+		_, err := os.Stat(path)
+		if err == nil {
+			if contains(pathExts, nameExt) { return nil }
+			return errNotExec
+		}
+	}
 
 	return os.ErrNotExist
 }

main.go

@@ -286,3 +286,12 @@ func removeDupes(slice []string) []string {
 
 	return newSlice
 }
+
+func contains(s []string, e string) bool {
+	for _, a := range s {
+		if a == e {
+			return true
+		}
+	}
+	return false
+}