Select files and enter directories by calling external program (#27)

* select file/dir with external program

* multi-file select with external prog

* last adjustions and README update

* separated cd/selection into their own functions

* update README

4 files changed, 271 insertions, 67 deletions

diff --git a/Cargo.lock b/Cargo.lock
index e8766fa..a103f7d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -51,8 +51,8 @@ dependencies = [
  "autocfg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "backtrace-sys 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-demangle 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-demangle 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -62,7 +62,7 @@ version = "0.1.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -158,7 +158,7 @@ name = "dirs"
 version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_users 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -168,7 +168,7 @@ name = "dirs-2"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_users 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -192,20 +192,20 @@ name = "failure_derive"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "synstructure 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "filetime"
-version = "0.2.4"
+version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -225,7 +225,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "fsevent-sys 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -233,7 +233,7 @@ name = "fsevent-sys"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -265,16 +265,16 @@ dependencies = [
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "lscolors 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "notify 4.0.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "osstrtools 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "osstrtools 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "parse-ansi 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "pathbuftools 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "signal-notify 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "systemstat 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "termion 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tree_magic 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "users 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -287,7 +287,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "inotify-sys 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -295,7 +295,7 @@ name = "inotify-sys"
 version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -303,7 +303,7 @@ name = "iovec"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -333,7 +333,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.51"
+version = "0.2.53"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -357,7 +357,7 @@ name = "memchr"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -380,7 +380,7 @@ dependencies = [
  "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -416,7 +416,7 @@ version = "0.2.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -444,12 +444,12 @@ version = "4.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "filetime 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "filetime 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "fsevent 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "fsevent-sys 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "inotify 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-extras 2.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -474,17 +474,22 @@ name = "num_cpus"
 version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
+name = "numtoa"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "ordermap"
 version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "osstrtools"
-version = "0.1.0"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -509,7 +514,7 @@ name = "parking_lot_core"
 version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -521,7 +526,7 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -543,7 +548,7 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "0.4.27"
+version = "0.4.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -551,10 +556,10 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "0.6.11"
+version = "0.6.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.28 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -563,7 +568,7 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -589,7 +594,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -612,7 +617,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -626,7 +631,7 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.1.53"
+version = "0.1.54"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -634,7 +639,7 @@ name = "redox_termios"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "redox_syscall 0.1.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -645,7 +650,7 @@ dependencies = [
  "argon2rs 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -656,12 +661,12 @@ dependencies = [
  "argon2rs 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_os 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "regex"
-version = "1.1.5"
+version = "1.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -681,7 +686,7 @@ dependencies = [
 
 [[package]]
 name = "rustc-demangle"
-version = "0.1.13"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -708,7 +713,7 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -728,11 +733,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "syn"
-version = "0.15.30"
+version = "0.15.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -741,9 +746,9 @@ name = "synstructure"
 version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -755,7 +760,7 @@ dependencies = [
  "bytesize 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "chrono 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
  "nom 3.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -763,11 +768,12 @@ dependencies = [
 
 [[package]]
 name = "termion"
-version = "1.5.1"
+version = "1.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "numtoa 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -784,8 +790,8 @@ name = "time"
 version = "0.1.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -821,7 +827,7 @@ name = "users"
 version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -911,7 +917,7 @@ dependencies = [
 "checksum either 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5527cfe0d098f36e3f8839852688e63c8fff1c90b2b405aef730615f9a7bcf7b"
 "checksum failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "795bd83d3abeb9220f257e597aa0080a508b27533824adf336529648f6abf7e2"
 "checksum failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "ea1063915fd7ef4309e222a5a07cf9c319fb9c7836b1f89b85458672dbb127e1"
-"checksum filetime 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "a2df5c1a8c4be27e7707789dc42ae65976e60b394afd293d1419ab915833e646"
+"checksum filetime 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "2f8c63033fcba1f51ef744505b3cad42510432b904c062afa67ad7ece008429d"
 "checksum fixedbitset 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "86d4de0081402f5e88cdac65c8dcdcc73118c1a7a465e2a05f0da05843a8ea33"
 "checksum fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2fad85553e09a6f881f739c29f0b00b0f01357c743266d478b68951ce23285f3"
 "checksum fsevent 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)" = "c4bbbf71584aeed076100b5665ac14e3d85eeb31fdbb45fbd41ef9a682b5ec05"
@@ -926,7 +932,7 @@ dependencies = [
 "checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
 "checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
 "checksum lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
-"checksum libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)" = "bedcc7a809076656486ffe045abeeac163da1b558e963a31e29fbfbeba916917"
+"checksum libc 0.2.53 (registry+https://github.com/rust-lang/crates.io-index)" = "ec350a9417dfd244dc9a6c4a71e13895a4db6b92f0b106f07ebbc3f3bc580cee"
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
 "checksum lscolors 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e9938fd8c379393454f73ec4c9c5b40f3d8332d80b25a29da05e41ee0ecbb559"
 "checksum memchr 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "148fab2e51b4f1cfc66da2a7c32981d1d3c083a803978268bb11fe4b86925e7a"
@@ -943,16 +949,17 @@ dependencies = [
 "checksum num-integer 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "e83d528d2677f0518c570baf2b7abdcf0cd2d248860b68507bdcb3e91d4c0cea"
 "checksum num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0b3a5d7cc97d6d30d8b9bc8fa19bf45349ffe46241e8816f50f62f6d6aaabee1"
 "checksum num_cpus 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1a23f0ed30a54abaa0c7e83b1d2d87ada7c3c23078d1d87815af3e3b6385fbba"
+"checksum numtoa 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b8f8bdf33df195859076e54ab11ee78a1b208382d3a26ec40d142ffc1ecc49ef"
 "checksum ordermap 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "a86ed3f5f244b372d6b1a00b72ef7f8876d0bc6a78a4c9985c53614041512063"
-"checksum osstrtools 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6fc89dd453b26466b5b3122d862d6c6b08082f404b396345793022eb3c626fd6"
+"checksum osstrtools 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "63557d11f265b66ffcda9cc624d5f92315cfeebb7ee01c76257f890f7d730f5b"
 "checksum owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cdf84f41639e037b484f93433aa3897863b561ed65c6e59c7073d7c561710f37"
 "checksum parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "149d8f5b97f3c1133e3cfcd8886449959e856b557ff281e292b733d7c69e005e"
 "checksum parking_lot_core 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "4db1a8ccf734a7bce794cc19b3df06ed87ab2f3907036b693c68f56b4d4537fa"
 "checksum parse-ansi 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "50c48b4d524f8a10bf6ab37dc0b7583f17c8ec88b617b364ddfc3baee4dcf878"
 "checksum pathbuftools 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "908eefc77ffb9f995c7eb707eed61e66ef34fa66a735673517e65a34da3ef7a0"
 "checksum petgraph 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)" = "9c3659d1ee90221741f65dd128d9998311b0e40c5d3c23a62445938214abce4f"
-"checksum proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)" = "4d317f9caece796be1980837fd5cb3dfec5613ebdb04ad0956deea83ce168915"
-"checksum quote 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)" = "cdd8e04bd9c52e0342b406469d494fcb033be4bdbe5c606016defbb1681411e1"
+"checksum proc-macro2 0.4.28 (registry+https://github.com/rust-lang/crates.io-index)" = "ba92c84f814b3f9a44c5cfca7d2ad77fa10710867d2bbb1b3d175ab5f47daa12"
+"checksum quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "faf4799c5d274f3868a4aae320a0a182cbd2baee377b378f080e16a23e9d80db"
 "checksum rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "552840b97013b1a26992c11eac34bdd778e464601a4c2054b5f0bff7c6761293"
 "checksum rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
 "checksum rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d0e7a549d590831370895ab7ba4ea0c1b6b011d106b5ff2da6eee112615e6dc0"
@@ -960,13 +967,13 @@ dependencies = [
 "checksum rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "373814f27745b2686b350dd261bfd24576a6fb0e2c5919b3a2b6005f820b0473"
 "checksum rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b055d1e92aba6877574d8fe604a63c8b5df60f60e5982bf7ccbb1338ea527356"
 "checksum rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "678054eb77286b51581ba43620cc911abf02758c91f93f479767aed0f90458b2"
-"checksum redox_syscall 0.1.53 (registry+https://github.com/rust-lang/crates.io-index)" = "53848511b7ee6eb9d5c3db48481aaa5779b38fc0131bc133c98cb4f2b2411928"
+"checksum redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)" = "12229c14a0f65c4f1cb046a3b52047cdd9da1f4b30f8a39c5063c8bae515e252"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
 "checksum redox_users 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "214a97e49be64fd2c86f568dd0cb2c757d2cc53de95b273b6ad0a1c908482f26"
 "checksum redox_users 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3fe5204c3a17e97dde73f285d49be585df59ed84b50a872baf416e73b62c3828"
-"checksum regex 1.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "559008764a17de49a3146b234641644ed37d118d1ef641a0bb573d146edc6ce0"
+"checksum regex 1.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "8f0a0bcab2fd7d1d7c54fa9eae6f43eddeb9ce2e7352f8518a814a4f65d60c58"
 "checksum regex-syntax 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)" = "dcfd8681eebe297b81d98498869d4aae052137651ad7b96822f09ceb690d0a96"
-"checksum rustc-demangle 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "adacaae16d02b6ec37fdc7acfcddf365978de76d1983d3ee22afc260e1ca9619"
+"checksum rustc-demangle 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "ccc78bfd5acd7bf3e89cffcf899e5cb1a52d6fafa8dec2739ad70c9577a57288"
 "checksum same-file 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8f20c4be53a8a1ff4c1f1b2bd14570d2f634628709752f0702ecdd2b3f9a5267"
 "checksum scoped_threadpool 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "1d51f5df5af43ab3f1360b429fa5e0152ac5ce8c0bd6485cae490332e96846a8"
 "checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
@@ -974,10 +981,10 @@ dependencies = [
 "checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 "checksum smallvec 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)" = "c4488ae950c49d403731982257768f48fada354a5203fe81f9bb6f43ca9002be"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
-"checksum syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)" = "66c8865bf5a7cbb662d8b011950060b3c8743dca141b054bf7195b20d314d8e2"
+"checksum syn 0.15.33 (registry+https://github.com/rust-lang/crates.io-index)" = "ec52cd796e5f01d0067225a5392e70084acc4c0013fa71d55166d38a8b307836"
 "checksum synstructure 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "73687139bf99285483c96ac0add482c3776528beac1d97d444f6e91f203a2015"
 "checksum systemstat 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "11374381f619810a32d086459e740a0e4a683f15beea3fe5f3cddb40c8791106"
-"checksum termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "689a3bdfaab439fd92bc87df5c4c78417d3cbe537487274e9b0b2dce76e92096"
+"checksum termion 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dde0593aeb8d47accea5392b39350015b5eccb12c0d98044d856983d89548dea"
 "checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
 "checksum time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "db8dcfca086c1143c9270ac42a2bbd8a7ee477b78ac8e45b19abfb0cbede4b6f"
 "checksum tree_magic 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8ed063ec7b632ba8173200d7e818db4ba01564b6c085c1a7d1041b93b55b0e02"
diff --git a/README.md b/README.md
index eaf71d7..ee4e7e4 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,7 @@ A big thanks to ranger and its developers. Without its inspiration this wouldn't
 * Asynchronous multi-threaded IO
 * Tabs
 * Multi-file selection
+* Enter directories/select files using external command like fzf
 * ranger import for bookmarks/tags
 * minibuffer with completion and filename/selection/tab/directory substitution
 * subprocess viewer that shows output of started subprocesses
@@ -88,6 +89,8 @@ hunter reads $XDG_CONFIG_HOME/hunter/config at startup. On macOS it reads $HOME/
 ```
 animation=on
 show_hidden=off
+select_cmd=find -type f | fzf -m
+cd_cmd=find -type d | fzf
 ```
 
 ## Drop into hunter cwd on quit
@@ -121,6 +124,7 @@ By default hunter uses vi-style keybindings. If you use a QWERTY-like keyboard l
 | Alt(S)              | search prev                        |
 | Ctrl(f)             | filter                             |
 | space               | multi select file                  |
+| Alt(space)          | select with external program       |
 | v                   | invert selections                  |
 | t                   | toggle tag                         |
 | h                   | toggle show hidden                 |
@@ -130,6 +134,7 @@ By default hunter uses vi-style keybindings. If you use a QWERTY-like keyboard l
 | k                   | select prev by mtime               |
 | d                   | toggle dirs first                  |
 | /                   | turbo cd                           |
+| Alt(/)              | enter dir with external program    |
 | Q                   | quit with dir/selections           |
 | L                   | run in background                  |
 | ~                   | goto prev cwd                      |
diff --git a/src/config.rs b/src/config.rs
index 4801286..5b0f8dc 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -5,6 +5,8 @@ use crate::fail::{HError, HResult, ErrorLog};
 pub struct Config {
     pub animation: bool,
     pub show_hidden: bool,
+    pub select_cmd: String,
+    pub cd_cmd: String
 }
 
 
@@ -12,7 +14,9 @@ impl Config {
     pub fn new() -> Config {
         Config {
             animation: true,
-            show_hidden: false
+            show_hidden: false,
+            select_cmd: "find -type f | fzf -m".to_string(),
+            cd_cmd: "find -type d | fzf".to_string()
         }
     }
 
@@ -31,6 +35,14 @@ impl Config {
                 Ok(("animation", "off")) => { config.animation = false; },
                 Ok(("show_hidden", "on")) => { config.show_hidden = true; },
                 Ok(("show_hidden", "off")) => { config.show_hidden = false; },
+                Ok(("select_cmd", cmd)) => {
+                    let cmd = cmd.to_string();
+                    config.select_cmd = cmd;
+                }
+                Ok(("cd_cmd", cmd)) => {
+                    let cmd = cmd.to_string();
+                    config.cd_cmd = cmd;
+                }
                 _ => { HError::config_error::<Config>(line.to_string()).log(); }
             }
             config
diff --git a/src/file_browser.rs b/src/file_browser.rs
index 408b0c7..1ca9046 100644
--- a/src/file_browser.rs
+++ b/src/file_browser.rs
@@ -1,10 +1,12 @@
 use termion::event::Key;
 use pathbuftools::PathBufTools;
+use osstrtools::OsStrTools;
 
 use std::io::Write;
 use std::sync::{Arc, Mutex, RwLock};
 use std::path::PathBuf;
 use std::ffi::OsString;
+use std::os::unix::ffi::OsStringExt;
 use std::collections::HashSet;
 
 use crate::files::{File, Files};
@@ -437,6 +439,19 @@ impl FileBrowser {
         Ok(())
     }
 
+    pub fn main_widget_goto_wait(&mut self, dir :&File) -> HResult<()> {
+        self.main_widget_goto(&dir)?;
+
+        // replace this with on_ready_mut() later
+        let pause = std::time::Duration::from_millis(10);
+        while self.main_widget().is_err() {
+            self.main_async_widget_mut()?.refresh().log();
+            std::thread::sleep(pause);
+        }
+
+        Ok(())
+    }
+
     pub fn main_widget_goto(&mut self, dir: &File) -> HResult<()> {
         self.cache_files().log();
 
@@ -825,6 +840,170 @@ impl FileBrowser {
         Ok(())
     }
 
+    fn external_select(&mut self) -> HResult<()> {
+        let shell = std::env::var("SHELL").unwrap_or("bash".into());
+        let cmd = self.core
+            .config.read()?
+            .get()?
+            .select_cmd
+            .clone();
+
+        self.core.get_sender().send(Events::InputEnabled(false))?;
+        self.core.screen.drop_screen();
+        self.preview_widget().map(|preview| preview.cancel_animation()).log();
+
+        let cmd_result = std::process::Command::new(shell)
+            .arg("-c")
+            .arg(&cmd)
+            .stdin(std::process::Stdio::inherit())
+            .stdout(std::process::Stdio::piped())
+            .stderr(std::process::Stdio::inherit())
+            .output();
+
+        self.core.screen.reset_screen().log();
+        self.clear().log();
+        self.core.get_sender().send(Events::InputEnabled(true))?;
+
+        match cmd_result {
+            Ok(cmd_result) => {
+                if cmd_result.status.success() {
+                    let cwd = &self.cwd.path;
+
+                    let paths = OsString::from_vec(cmd_result.stdout)
+                        .split_lines()
+                        .iter()
+                        .map(|output| {
+                            let path = PathBuf::from(output);
+                            if path.is_absolute() {
+                                path
+                            } else {
+                                cwd.join(path)
+                            }
+                        })
+                        .collect::<Vec<PathBuf>>();
+
+                    if paths.len() == 1 {
+                        let path = &paths[0];
+                        if path.exists() {
+                            if path.is_dir() {
+                                let dir = File::new_from_path(&path, None)?;
+
+                                self.main_widget_goto(&dir).log();
+                            } else if path.is_file() {
+                                let file = File::new_from_path(&path, None)?;
+                                let dir = file.parent_as_file()?;
+
+                                self.main_widget_goto_wait(&dir).log();
+
+                                self.main_widget_mut()?.select_file(&file);
+                            }
+                        } else {
+                            let msg = format!("Can't access path: {}!",
+                                              path.to_string_lossy());
+                            self.show_status(&msg).log();
+                        }
+                    } else {
+                        let mut last_file = None;
+                        for file_path in paths {
+                            if !file_path.exists() {
+                                let msg = format!("Can't find: {}",
+                                                  file_path .to_string_lossy());
+                                self.show_status(&msg).log();
+                                continue;
+                            }
+
+                            let dir_path = file_path.parent()?;
+                            if self.cwd.path != dir_path {
+                                let file_dir = File::new_from_path(&dir_path, None);
+
+                                self.main_widget_goto_wait(&file_dir?).log();
+                            }
+
+                            self.main_widget_mut()?
+                                .content
+                                .find_file_with_path(&file_path)
+                                .map(|file| {
+                                    file.toggle_selection();
+                                    last_file = Some(file.clone());
+                                });
+                        }
+
+                        self.main_widget_mut().map(|w| {
+                            last_file.map(|f| w.select_file(&f));
+                            w.content.set_dirty();
+                        }).log();
+                    }
+                } else {
+                    self.show_status("External program failed!").log();
+                }
+            }
+            Err(_) => self.show_status("Can't run external program!").log()
+        }
+
+        Ok(())
+    }
+
+    fn external_cd(&mut self) -> HResult<()> {
+        let shell = std::env::var("SHELL").unwrap_or("bash".into());
+        let cmd = self.core
+            .config.read()?
+            .get()?
+            .cd_cmd
+            .clone();
+
+        self.core.get_sender().send(Events::InputEnabled(false))?;
+        self.core.screen.drop_screen();
+        self.preview_widget().map(|preview| preview.cancel_animation()).log();
+
+        let cmd_result = std::process::Command::new(shell)
+            .arg("-c")
+            .arg(cmd)
+            .stdin(std::process::Stdio::inherit())
+            .stdout(std::process::Stdio::piped())
+            .stderr(std::process::Stdio::inherit())
+            .output();
+
+        self.core.screen.reset_screen().log();
+        self.clear().log();
+        self.core.get_sender().send(Events::InputEnabled(true))?;
+
+        match cmd_result {
+            Ok(cmd_result) => {
+                if cmd_result.status.success() {
+                    let cwd = &self.cwd.path;
+
+                    let path_string = OsString::from_vec(cmd_result.stdout);
+                    let path_string = path_string.trim_end_newlines();
+                    let path = PathBuf::from(path_string);
+                    let path = if path.is_absolute() {
+                        path
+                    } else {
+                        cwd.join(path)
+                    };
+
+                    if path.exists() {
+                        if path.is_dir() {
+                            let dir = File::new_from_path(&path, None)?;
+                            self.main_widget_goto(&dir).log();
+                        }
+                        else {
+                            let msg = format!("Can't access path: {}!",
+                                              path.to_string_lossy());
+                            self.show_status(&msg).log();
+                        }
+
+                    } else {
+                        self.show_status("External program failed!").log();
+                    }
+                }
+            }
+            Err(_) => self.show_status("Can't run external program!").log()
+        }
+
+        Ok(())
+    }
+
+
     fn exec_cmd(&mut self,
                 tab_dirs: Vec<File>,
                 tab_files: Vec<Vec<File>>) -> HResult<()> {
@@ -1031,6 +1210,8 @@ impl Widget for FileBrowser {
 
     fn on_key(&mut self, key: Key) -> HResult<()> {
         match key {
+            Key::Alt(' ') => self.external_select()?,
+            Key::Alt('/') => self.external_cd()?,
             Key::Char('/') => { self.turbo_cd()?; },
             Key::Char('q') => HError::quit()?,
             Key::Char('Q') => { self.quit_with_dir()?; },
@@ -1040,7 +1221,6 @@ impl Widget for FileBrowser {
             Key::Char('-') => { self.goto_prev_cwd()?; },
             Key::Char('`') => { self.goto_bookmark()?; },
             Key::Char('m') => { self.add_bookmark()?; },
-
             Key::Char('w') => { self.show_procview()?; },
             Key::Char('g') => s