diff --git a/Gopkg.lock b/Gopkg.lock
index 9a564e42a..c7f37e045 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -57,6 +57,14 @@
   pruneopts = "NUT"
   revision = "5c94acc5e6eb520f1bcd183974e01171cc4c23b3"
 
+[[projects]]
+  digest = "1:cd5ffc5bda4e0296ab3e4de90dbb415259c78e45e7fab13694b14cde8ab74541"
+  name = "github.com/tcnksm/go-gitconfig"
+  packages = ["."]
+  pruneopts = "NUT"
+  revision = "d154598bacbf4501c095a309753c5d4af66caa81"
+  version = "v0.1.2"
+
 [[projects]]
   branch = "master"
   digest = "1:4d8a79fbc6fa348fc94afa4235947c5196b7900ed71b94aa5fcbc7e273d150e1"
@@ -72,6 +80,7 @@
     "github.com/fatih/color",
     "github.com/golang-collections/collections/stack",
     "github.com/jesseduffield/gocui",
+    "github.com/tcnksm/go-gitconfig",
   ]
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/files_panel.go b/files_panel.go
index 7e0ed58d5..5c1ec3353 100644
--- a/files_panel.go
+++ b/files_panel.go
@@ -63,6 +63,21 @@ func handleFilePress(g *gocui.Gui, v *gocui.View) error {
 	return handleFileSelect(g, v)
 }
 
+func handleAddPatch(g *gocui.Gui, v *gocui.View) error {
+	file, err := getSelectedFile(g)
+	if err != nil {
+		if err == ErrNoFiles {
+			return nil
+		}
+		return err
+	}
+	if !file.HasUnstagedChanges {
+		return createErrorPanel(g, "File has no unstaged changes to add")
+	}
+	gitAddPatch(g, file.Name)
+	return err
+}
+
 func getSelectedFile(g *gocui.Gui) (GitFile, error) {
 	if len(state.GitFiles) == 0 {
 		return GitFile{}, ErrNoFiles
@@ -163,7 +178,7 @@ func handleCommitPress(g *gocui.Gui, filesView *gocui.View) error {
 		if message == "" {
 			return createErrorPanel(g, "You cannot commit without a commit message")
 		}
-		if output, err := gitCommit(message); err != nil {
+		if output, err := gitCommit(g, message); err != nil {
 			return createErrorPanel(g, output)
 		}
 		refreshFiles(g)
@@ -172,7 +187,7 @@ func handleCommitPress(g *gocui.Gui, filesView *gocui.View) error {
 	return nil
 }
 
-func genericFileOpen(g *gocui.Gui, v *gocui.View, open func(string) (string, error)) error {
+func genericFileOpen(g *gocui.Gui, v *gocui.View, open func(*gocui.Gui, string) (string, error)) error {
 	file, err := getSelectedFile(g)
 	if err != nil {
 		if err != ErrNoFiles {
@@ -180,18 +195,24 @@ func genericFileOpen(g *gocui.Gui, v *gocui.View, open func(string) (string, err
 		}
 		return nil
 	}
-	if output, err := open(file.Name); err != nil {
-		return createErrorPanel(g, output)
+	if _, err := open(g, file.Name); err != nil {
+		return createErrorPanel(g, err.Error())
 	}
 	return nil
 }
 
+func handleFileEdit(g *gocui.Gui, v *gocui.View) error {
+	return genericFileOpen(g, v, editFile)
+}
+
 func handleFileOpen(g *gocui.Gui, v *gocui.View) error {
 	return genericFileOpen(g, v, openFile)
 }
+
 func handleSublimeFileOpen(g *gocui.Gui, v *gocui.View) error {
 	return genericFileOpen(g, v, sublimeOpenFile)
 }
+
 func handleVsCodeFileOpen(g *gocui.Gui, v *gocui.View) error {
 	return genericFileOpen(g, v, vsCodeOpenFile)
 }
diff --git a/gitcommands.go b/gitcommands.go
index fe2b7746f..2c5a4f2dc 100644
--- a/gitcommands.go
+++ b/gitcommands.go
@@ -13,11 +13,16 @@ import (
 	"time"
 
 	"github.com/fatih/color"
+	"github.com/jesseduffield/gocui"
+	gitconfig "github.com/tcnksm/go-gitconfig"
 )
 
 var (
 	// ErrNoCheckedOutBranch : When we have no checked out branch
 	ErrNoCheckedOutBranch = errors.New("No currently checked out branch")
+
+	// ErrNoOpenCommand : When we don't know which command to use to open a file
+	ErrNoOpenCommand = errors.New("Unsure what command to use to open this file")
 )
 
 // GitFile : A staged/unstaged file
@@ -263,23 +268,73 @@ func runCommand(command string) (string, error) {
 	commandStartTime := time.Now()
 	commandLog(command)
 	splitCmd := strings.Split(command, " ")
+	devLog(splitCmd)
 	cmdOut, err := exec.Command(splitCmd[0], splitCmd[1:]...).CombinedOutput()
 	devLog("run command time: ", time.Now().Sub(commandStartTime))
 	return sanitisedCommandOutput(cmdOut, err)
 }
 
-func openFile(filename string) (string, error) {
-	return runCommand("open " + filename)
-}
-
-func vsCodeOpenFile(filename string) (string, error) {
+func vsCodeOpenFile(g *gocui.Gui, filename string) (string, error) {
 	return runCommand("code -r " + filename)
 }
 
-func sublimeOpenFile(filename string) (string, error) {
+func sublimeOpenFile(g *gocui.Gui, filename string) (string, error) {
 	return runCommand("subl " + filename)
 }
 
+func openFile(g *gocui.Gui, filename string) (string, error) {
+	cmdName, cmdTrail, err := getOpenCommand()
+	if err != nil {
+		return "", err
+	}
+	return runCommand(cmdName + " " + filename + cmdTrail)
+}
+
+func getOpenCommand() (string, string, error) {
+	//NextStep open equivalents: xdg-open (linux), cygstart (cygwin), open (OSX)
+	trailMap := map[string]string{
+		"xdg-open": " &>/dev/null &",
+		"cygstart": "",
+		"open":     "",
+	}
+	for name, trail := range trailMap {
+		if out, _ := runCommand("which " + name); out != "exit status 1" {
+			return name, trail, nil
+		}
+	}
+	return "", "", ErrNoOpenCommand
+}
+
+func gitAddPatch(g *gocui.Gui, filename string) {
+	runSubProcess(g, "git", "add", "-p", filename)
+}
+
+func editFile(g *gocui.Gui, filename string) (string, error) {
+	editor, _ := gitconfig.Global("core.editor")
+	if editor == "" {
+		editor = os.Getenv("VISUAL")
+	}
+	if editor == "" {
+		editor = os.Getenv("EDITOR")
+	}
+	if editor == "" {
+		return "", createErrorPanel(g, "No editor defined in $VISUAL, $EDITOR, or git config.")
+	}
+	runSubProcess(g, editor, filename)
+	return "", nil
+}
+
+func runSubProcess(g *gocui.Gui, cmdName string, commandArgs ...string) {
+	subprocess = exec.Command(cmdName, commandArgs...)
+	subprocess.Stdin = os.Stdin
+	subprocess.Stdout = os.Stdout
+	subprocess.Stderr = os.Stderr
+
+	g.Update(func(g *gocui.Gui) error {
+		return ErrSubprocess
+	})
+}
+
 func getBranchGraph(branch string, baseBranch string) (string, error) {
 	return runCommand("git log --graph --color --abbrev-commit --decorate --date=relative --pretty=medium -100 " + branch)
 
@@ -403,7 +458,12 @@ func removeFile(file GitFile) error {
 	return err
 }
 
-func gitCommit(message string) (string, error) {
+func gitCommit(g *gocui.Gui, message string) (string, error) {
+	gpgsign, _ := gitconfig.Global("commit.gpgsign")
+	if gpgsign != "" {
+		runSubProcess(g, "bash", "-c", "git commit -m \""+message+"\"")
+		return "", nil
+	}
 	return runDirectCommand("git commit -m \"" + message + "\"")
 }
 
diff --git a/gui.go b/gui.go
index 2fbb36283..fa820b36e 100644
--- a/gui.go
+++ b/gui.go
@@ -5,7 +5,6 @@ import (
 	// "io"
 	// "io/ioutil"
 
-	"log"
 	"runtime"
 	"strings"
 	"time"
@@ -207,10 +206,10 @@ func updateLoader(g *gocui.Gui) {
 	}
 }
 
-func run() {
+func run() (err error) {
 	g, err := gocui.NewGui(gocui.OutputNormal, OverlappingEdges)
 	if err != nil {
-		log.Panicln(err)
+		return
 	}
 	defer g.Close()
 
@@ -229,13 +228,12 @@ func run() {
 
 	g.SetManagerFunc(layout)
 
-	if err := keybindings(g); err != nil {
-		log.Panicln(err)
+	if err = keybindings(g); err != nil {
+		return
 	}
 
-	if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
-		log.Panicln(err)
-	}
+	err = g.MainLoop()
+	return
 }
 
 func quit(g *gocui.Gui, v *gocui.View) error {
diff --git a/keybindings.go b/keybindings.go
index 6bca698e3..6448a6be0 100644
--- a/keybindings.go
+++ b/keybindings.go
@@ -30,6 +30,7 @@ func keybindings(g *gocui.Gui) error {
 		Binding{ViewName: "files", Key: gocui.KeySpace, Modifier: gocui.ModNone, Handler: handleFilePress},
 		Binding{ViewName: "files", Key: 'd', Modifier: gocui.ModNone, Handler: handleFileRemove},
 		Binding{ViewName: "files", Key: 'm', Modifier: gocui.ModNone, Handler: handleSwitchToMerge},
+		Binding{ViewName: "files", Key: 'e', Modifier: gocui.ModNone, Handler: handleFileEdit},
 		Binding{ViewName: "files", Key: 'o', Modifier: gocui.ModNone, Handler: handleFileOpen},
 		Binding{ViewName: "files", Key: 's', Modifier: gocui.ModNone, Handler: handleSublimeFileOpen},
 		Binding{ViewName: "files", Key: 'v', Modifier: gocui.ModNone, Handler: handleVsCodeFileOpen},
@@ -37,6 +38,7 @@ func keybindings(g *gocui.Gui) error {
 		Binding{ViewName: "files", Key: 'r', Modifier: gocui.ModNone, Handler: handleRefreshFiles},
 		Binding{ViewName: "files", Key: 'S', Modifier: gocui.ModNone, Handler: handleStashSave},
 		Binding{ViewName: "files", Key: 'a', Modifier: gocui.ModNone, Handler: handleAbortMerge},
+		Binding{ViewName: "files", Key: 't', Modifier: gocui.ModNone, Handler: handleAddPatch},
 		Binding{ViewName: "main", Key: gocui.KeyArrowUp, Modifier: gocui.ModNone, Handler: handleSelectTop},
 		Binding{ViewName: "main", Key: gocui.KeyArrowDown, Modifier: gocui.ModNone, Handler: handleSelectBottom},
 		Binding{ViewName: "main", Key: gocui.KeyEsc, Modifier: gocui.ModNone, Handler: handleEscapeMerge},
diff --git a/main.go b/main.go
index f900bb051..ad753c407 100644
--- a/main.go
+++ b/main.go
@@ -1,19 +1,24 @@
 package main
 
 import (
+	"errors"
 	"flag"
 	"fmt"
 	"log"
 	"os"
+	"os/exec"
 	"os/user"
 	"time"
 
 	"github.com/fatih/color"
+	"github.com/jesseduffield/gocui"
 )
 
+// ErrSubProcess is raised when we are running a subprocess
 var (
-	startTime time.Time
-	debugging bool
+	ErrSubprocess = errors.New("running subprocess")
+	subprocess    *exec.Cmd
+	startTime     time.Time
 
 	// Rev - Git Revision
 	Rev string
@@ -21,9 +26,9 @@ var (
 	// Version - Version number
 	Version = "unversioned"
 
-	builddate        string
-	debuggingPointer = flag.Bool("debug", false, "a boolean")
-	versionFlag      = flag.Bool("v", false, "Print the current version")
+	builddate     string
+	debuggingFlag = flag.Bool("debug", false, "a boolean")
+	versionFlag   = flag.Bool("v", false, "Print the current version")
 )
 
 func homeDirectory() string {
@@ -47,7 +52,7 @@ func commandLog(objects ...interface{}) {
 }
 
 func localLog(colour color.Attribute, path string, objects ...interface{}) {
-	if !debugging {
+	if !*debuggingFlag {
 		return
 	}
 	f, _ := os.OpenFile(path, os.O_APPEND|os.O_WRONLY, 0644)
@@ -69,7 +74,6 @@ func navigateToRepoRootDirectory() {
 
 func main() {
 	startTime = time.Now()
-	debugging = *debuggingPointer
 	devLog("\n\n\n\n\n\n\n\n\n\n")
 	flag.Parse()
 	if *versionFlag {
@@ -78,5 +82,15 @@ func main() {
 	}
 	verifyInGitRepo()
 	navigateToRepoRootDirectory()
-	run()
+	for {
+		if err := run(); err != nil {
+			if err == gocui.ErrQuit {
+				break
+			} else if err == ErrSubprocess {
+				subprocess.Run()
+			} else {
+				log.Panicln(err)
+			}
+		}
+	}
 }
diff --git a/test/shell_script_input_prompt.sh b/test/shell_script_input_prompt.sh
new file mode 100755
index 000000000..eb3a31374
--- /dev/null
+++ b/test/shell_script_input_prompt.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+# For testing subprocesses that require input
+# Ask the user for login details
+read -p 'Username: ' user
+read -sp 'Password: ' pass
+echo
+echo Hello $user
diff --git a/vendor/github.com/tcnksm/go-gitconfig/LICENSE b/vendor/github.com/tcnksm/go-gitconfig/LICENSE
new file mode 100644
index 000000000..3457f2566
--- /dev/null
+++ b/vendor/github.com/tcnksm/go-gitconfig/LICENSE
@@ -0,0 +1,22 @@
+Copyright (c) 2014 tcnksm
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
diff --git a/vendor/github.com/tcnksm/go-gitconfig/gitconfig.go b/vendor/github.com/tcnksm/go-gitconfig/gitconfig.go
new file mode 100644
index 000000000..46c6a10f6
--- /dev/null
+++ b/vendor/github.com/tcnksm/go-gitconfig/gitconfig.go
@@ -0,0 +1,113 @@
+// Package gitconfig enables you to use `~/.gitconfig` values in Golang.
+//
+// For a full guide visit http://github.com/tcnksm/go-gitconfig
+//
+//  package main
+//
+//  import (
+//    "github.com/tcnksm/go-gitconfig"
+//    "fmt"
+//  )
+//
+//  func main() {
+//    user, err := gitconfig.Global("user.name")
+//    if err == nil {
+//      fmt.Println(user)
+//    }
+//  }
+//
+package gitconfig
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"os/exec"
+	"regexp"
+	"strings"
+	"syscall"
+)
+
+// Entire extracts configuration value from `$HOME/.gitconfig` file ,
+// `$GIT_CONFIG`, /etc/gitconfig or include.path files.
+func Entire(key string) (string, error) {
+	return execGitConfig(key)
+}
+
+// Global extracts configuration value from `$HOME/.gitconfig` file or `$GIT_CONFIG`.
+func Global(key string) (string, error) {
+	return execGitConfig("--global", key)
+}
+
+// Local extracts configuration value from current project repository.
+func Local(key string) (string, error) {
+	return execGitConfig("--local", key)
+}
+
+// GithubUser extracts github.user name from `Entire gitconfig`
+// This is same as Entire("github.user")
+func GithubUser() (string, error) {
+	return Entire("github.user")
+}
+
+// Username extracts git user name from `Entire gitconfig`.
+// This is same as Entire("user.name")
+func Username() (string, error) {
+	return Entire("user.name")
+}
+
+// Email extracts git user email from `$HOME/.gitconfig` file or `$GIT_CONFIG`.
+// This is same as Global("user.email")
+func Email() (string, error) {
+	return Entire("user.email")
+}
+
+// OriginURL extract remote origin url from current project repository.
+// This is same as Local("remote.origin.url")
+func OriginURL() (string, error) {
+	return Local("remote.origin.url")
+}
+
+// Repository extract repository name of current project repository.
+func Repository() (string, error) {
+	url, err := OriginURL()
+	if err != nil {
+		return "", err
+	}
+
+	repo := retrieveRepoName(url)
+	return repo, nil
+}
+
+// Github extracts github token from `Entire gitconfig`.
+// This is same as Entire("github.token")
+func GithubToken() (string, error) {
+	return Entire("github.token")
+}
+
+func execGitConfig(args ...string) (string, error) {
+	gitArgs := append([]string{"config", "--get", "--null"}, args...)
+	var stdout bytes.Buffer
+	cmd := exec.Command("git", gitArgs...)
+	cmd.Stdout = &stdout
+	cmd.Stderr = ioutil.Discard
+
+	err := cmd.Run()
+	if exitError, ok := err.(*exec.ExitError); ok {
+		if waitStatus, ok := exitError.Sys().(syscall.WaitStatus); ok {
+			if waitStatus.ExitStatus() == 1 {
+				return "", fmt.Errorf("the key `%s` is not found", args[len(args)-1])
+			}
+		}
+		return "", err
+	}
+
+	return strings.TrimRight(stdout.String(), "\000"), nil
+}
+
+var RepoNameRegexp = regexp.MustCompile(`.+/([^/]+)(\.git)?$`)
+
+func retrieveRepoName(url string) string {
+	matched := RepoNameRegexp.FindStringSubmatch(url)
+	return strings.TrimSuffix(matched[1], ".git")
+}