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-rw-r--r--.gitignore3
-rw-r--r--Dockerfile8
-rw-r--r--doc/ranger.123
-rw-r--r--doc/ranger.pod20
-rw-r--r--doc/rifle.12
-rw-r--r--examples/plugin_avfs.py33
-rw-r--r--examples/rc_emacs.conf2
-rw-r--r--ranger/config/__init__.py2
-rwxr-xr-xranger/config/commands.py16
-rw-r--r--ranger/config/rc.conf16
-rw-r--r--ranger/config/rifle.conf2
-rw-r--r--ranger/container/settings.py1
-rw-r--r--ranger/core/actions.py10
-rw-r--r--ranger/core/main.py79
-rw-r--r--ranger/ext/human_readable.py4
-rwxr-xr-xranger/ext/rifle.py8
-rw-r--r--ranger/gui/curses_shortcuts.py4
-rw-r--r--ranger/gui/ui.py6
-rw-r--r--ranger/gui/widgets/view_base.py66
-rw-r--r--tests/ranger/core/__init__.py0
-rw-r--r--tests/ranger/core/test_main.py18
21 files changed, 260 insertions, 63 deletions
diff --git a/.gitignore b/.gitignore
index 88c75b90..73ca85e6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,6 @@
 /ranger_fm.egg-info
 
 /stuff/*
+
+.idea
+.pytest_cache
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 00000000..36ad0a95
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,8 @@
+# Usage instructions:
+# 1. "docker build -t ranger/ranger:latest ."
+# 2. "docker run -it ranger/ranger"
+
+FROM debian
+
+RUN apt-get update && apt-get install -y ranger
+ENTRYPOINT ["ranger"]
diff --git a/doc/ranger.1 b/doc/ranger.1
index 9ec79cfd..c48f73d9 100644
--- a/doc/ranger.1
+++ b/doc/ranger.1
@@ -1,4 +1,4 @@
-.\" Automatically generated by Pod::Man 4.07 (Pod::Simple 3.32)
+.\" Automatically generated by Pod::Man 4.09 (Pod::Simple 3.35)
 .\"
 .\" Standard preamble:
 .\" ========================================================================
@@ -129,7 +129,7 @@
 .\" ========================================================================
 .\"
 .IX Title "RANGER 1"
-.TH RANGER 1 "ranger-1.9.1" "02/22/2018" "ranger manual"
+.TH RANGER 1 "ranger-1.9.1" "2018-05-08" "ranger manual"
 .\" For nroff, turn off justification.  Always turn off hyphenation; it makes
 .\" way too many mistakes in technical documents.
 .if n .ad l
@@ -267,7 +267,7 @@ typing \fI"<tagname>\fR.
 By default, only text files are previewed, but you can enable external preview
 scripts by setting the option \f(CW\*(C`use_preview_script\*(C'\fR and \f(CW\*(C`preview_files\*(C'\fR to true.
 .PP
-This default script is \fI~/.config/ranger/scope.sh\fR. It contains more
+This default script is \fI\f(CI%rangerdir\fI/data/scope.sh\fR. It contains more
 documentation and calls to the programs \fIlynx\fR and \fIelinks\fR for html,
 \&\fIhighlight\fR for text/code, \fIimg2txt\fR for images, \fIatool\fR for archives,
 \&\fIpdftotext\fR for PDFs and \fImediainfo\fR for video and audio files.
@@ -463,7 +463,7 @@ sample plugins in the \fI/usr/share/doc/ranger/examples/\fR directory, including
 hello-world plugin that describes this procedure.
 .SH "KEY BINDINGS"
 .IX Header "KEY BINDINGS"
-Key bindings are defined in the file \fIranger/config/rc.conf\fR.  Check this
+Key bindings are defined in the file \fI\f(CI%rangerdir\fI/config/rc.conf\fR.  Check this
 file for a list of all key bindings.  You can copy it to your local
 configuration directory with the \-\-copy\-config=rc option.
 .PP
@@ -599,7 +599,7 @@ Toggle the mark-status of all files
 .IP "V" 14
 .IX Item "V"
 Starts the visual mode, which selects all files between the starting point and
-the cursor until you press \s-1ESC. \s0 To unselect files in the same way, use \*(L"uV\*(R".
+the cursor until you press \s-1ESC.\s0  To unselect files in the same way, use \*(L"uV\*(R".
 .IP "/" 14
 Search for files in the current directory.
 .IP ":" 14
@@ -803,6 +803,13 @@ this pattern will hide all files that start with a dot or end with a tilde.
 .Vb 1
 \& set hidden_filter ^\e.|~$
 .Ve
+.IP "hint_collapse_threshold [int]" 4
+.IX Item "hint_collapse_threshold [int]"
+The key hint lists up to this size have their sublists expanded.
+Otherwise the submaps are replaced with \*(L"...\*(R".
+.IP "hostname_in_titlebar [bool]" 4
+.IX Item "hostname_in_titlebar [bool]"
+Show hostname in titlebar?
 .IP "idle_delay [integer]" 4
 .IX Item "idle_delay [integer]"
 The delay that ranger idly waits for user input, in milliseconds, with a
@@ -935,9 +942,6 @@ combination, e.g. \*(L"oN\*(R" to sort from Z to A.
 .IP "status_bar_on_top [bool]" 4
 .IX Item "status_bar_on_top [bool]"
 Put the status bar at the top of the window?
-.IP "hostname_in_titlebar [bool]" 4
-.IX Item "hostname_in_titlebar [bool]"
-Show hostname in titlebar?
 .IP "tilde_in_titlebar [bool]" 4
 .IX Item "tilde_in_titlebar [bool]"
 Abbreviate \f(CW$HOME\fR with ~ in the titlebar (first line) of ranger?
@@ -1424,6 +1428,9 @@ being bound despite the corresponding line being removed from the user's copy of
 the configuration file. This behavior may be disabled with an environment
 variable (see also: \fB\s-1ENVIRONMENT\s0\fR). Note: All other configuration files only
 read from one source; i.e. default \s-1OR\s0 user, not both.
+\&\fIrc.conf\fR and \fIcommands.py\fR are additionally read from \fI/etc/ranger\fR if they
+exist for system-wide configuration, user configuration overrides system
+configuration which overrides the default configuration.
 .PP
 When starting ranger with the \fB\-\-clean\fR option, it will not access or create
 any of these files.
diff --git a/doc/ranger.pod b/doc/ranger.pod
index 04598bd2..d36db622 100644
--- a/doc/ranger.pod
+++ b/doc/ranger.pod
@@ -174,7 +174,7 @@ typing I<"<tagnameE<gt>>.
 By default, only text files are previewed, but you can enable external preview
 scripts by setting the option C<use_preview_script> and C<preview_files> to true.
 
-This default script is F<~/.config/ranger/scope.sh>. It contains more
+This default script is F<%rangerdir/data/scope.sh>. It contains more
 documentation and calls to the programs I<lynx> and I<elinks> for html,
 I<highlight> for text/code, I<img2txt> for images, I<atool> for archives,
 I<pdftotext> for PDFs and I<mediainfo> for video and audio files.
@@ -364,7 +364,7 @@ hello-world plugin that describes this procedure.
 
 =head1 KEY BINDINGS
 
-Key bindings are defined in the file F<ranger/config/rc.conf>.  Check this
+Key bindings are defined in the file F<%rangerdir/config/rc.conf>.  Check this
 file for a list of all key bindings.  You can copy it to your local
 configuration directory with the --copy-config=rc option.
 
@@ -795,6 +795,15 @@ this pattern will hide all files that start with a dot or end with a tilde.
 
  set hidden_filter ^\.|~$
 
+=item hint_collapse_threshold [int]
+
+The key hint lists up to this size have their sublists expanded.
+Otherwise the submaps are replaced with "...".
+
+=item hostname_in_titlebar [bool]
+
+Show hostname in titlebar?
+
 =item idle_delay [integer]
 
 The delay that ranger idly waits for user input, in milliseconds, with a
@@ -955,10 +964,6 @@ combination, e.g. "oN" to sort from Z to A.
 
 Put the status bar at the top of the window?
 
-=item hostname_in_titlebar [bool]
-
-Show hostname in titlebar?
-
 =item tilde_in_titlebar [bool]
 
 Abbreviate $HOME with ~ in the titlebar (first line) of ranger?
@@ -1511,6 +1516,9 @@ being bound despite the corresponding line being removed from the user's copy of
 the configuration file. This behavior may be disabled with an environment
 variable (see also: B<ENVIRONMENT>). Note: All other configuration files only
 read from one source; i.e. default OR user, not both.
+F<rc.conf> and F<commands.py> are additionally read from F</etc/ranger> if they
+exist for system-wide configuration, user configuration overrides system
+configuration which overrides the default configuration.
 
 When starting ranger with the B<--clean> option, it will not access or create
 any of these files.
diff --git a/doc/rifle.1 b/doc/rifle.1
index 9e439c35..ad32e4f4 100644
--- a/doc/rifle.1
+++ b/doc/rifle.1
@@ -129,7 +129,7 @@
 .\" ========================================================================
 .\"
 .IX Title "RIFLE 1"
-.TH RIFLE 1 "rifle-1.9.1" "02/22/2018" "rifle manual"
+.TH RIFLE 1 "rifle-1.9.1" "05.03.2018" "rifle manual"
 .\" For nroff, turn off justification.  Always turn off hyphenation; it makes
 .\" way too many mistakes in technical documents.
 .if n .ad l
diff --git a/examples/plugin_avfs.py b/examples/plugin_avfs.py
new file mode 100644
index 00000000..07968a03
--- /dev/null
+++ b/examples/plugin_avfs.py
@@ -0,0 +1,33 @@
+# Tested with ranger 1.9.1
+#
+# A very simple and possibly buggy support for AVFS
+# (http://avf.sourceforge.net/), that allows ranger to handle
+# archives.
+#
+# Run `:avfs' to browse the selected archive.
+
+from __future__ import (absolute_import, division, print_function)
+
+import os
+import os.path
+
+from ranger.api.commands import Command
+
+
+class avfs(Command):  # pylint: disable=invalid-name
+    avfs_root = os.path.join(os.environ["HOME"], ".avfs")
+    avfs_suffix = "#"
+
+    def execute(self):
+        if os.path.isdir(self.avfs_root):
+            archive_directory = "".join([
+                self.avfs_root,
+                self.fm.thisfile.path,
+                self.avfs_suffix,
+            ])
+            if os.path.isdir(archive_directory):
+                self.fm.cd(archive_directory)
+            else:
+                self.fm.notify("This file cannot be handled by avfs.", bad=True)
+        else:
+            self.fm.notify("Install `avfs' and run `mountavfs' first.", bad=True)
diff --git a/examples/rc_emacs.conf b/examples/rc_emacs.conf
index 4743f8a3..0462282e 100644
--- a/examples/rc_emacs.conf
+++ b/examples/rc_emacs.conf
@@ -132,7 +132,7 @@ set display_tags_in_all_columns true
 set update_title false
 
 # Set the title to "ranger" in the tmux program?
-set update_tmux_title false
+set update_tmux_title true
 
 # Shorten the title if it gets long?  The number defines how many
 # directories are displayed at once, 0 turns off this feature.
diff --git a/ranger/config/__init__.py b/ranger/config/__init__.py
index 71df3cb3..0facbdf8 100644
--- a/ranger/config/__init__.py
+++ b/ranger/config/__init__.py
@@ -1 +1 @@
-"""Default options and configration files"""
+"""Default options and configuration files"""
diff --git a/ranger/config/commands.py b/ranger/config/commands.py
index a3837d8e..a7fe68b4 100755
--- a/ranger/config/commands.py
+++ b/ranger/config/commands.py
@@ -3,8 +3,9 @@
 # This configuration file is licensed under the same terms as ranger.
 # ===================================================================
 #
-# NOTE: If you copied this file to ~/.config/ranger/commands_full.py,
-# then it will NOT be loaded by ranger, and only serve as a reference.
+# NOTE: If you copied this file to /etc/ranger/commands_full.py or
+# ~/.config/ranger/commands_full.py, then it will NOT be loaded by ranger,
+# and only serve as a reference.
 #
 # ===================================================================
 # This file contains ranger's commands.
@@ -13,9 +14,14 @@
 # Note that additional commands are automatically generated from the methods
 # of the class ranger.core.actions.Actions.
 #
-# You can customize commands in the file ~/.config/ranger/commands.py.
-# It has the same syntax as this file.  In fact, you can just copy this
-# file there with `ranger --copy-config=commands' and make your modifications.
+# You can customize commands in the files /etc/ranger/commands.py (system-wide)
+# and ~/.config/ranger/commands.py (per user).
+# They have the same syntax as this file.  In fact, you can just copy this
+# file to ~/.config/ranger/commands_full.py with
+# `ranger --copy-config=commands_full' and make your modifications, don't
+# forget to rename it to commands.py.  You can also use
+# `ranger --copy-config=commands' to copy a short sample commands.py that
+# has everything you need to get started.
 # But make sure you update your configs when you update ranger.
 #
 # ===================================================================
diff --git a/ranger/config/rc.conf b/ranger/config/rc.conf
index 51d18ff2..00dc02f8 100644
--- a/ranger/config/rc.conf
+++ b/ranger/config/rc.conf
@@ -1,7 +1,8 @@
 # ===================================================================
 # This file contains the default startup commands for ranger.
-# To change them, it is recommended to create the file
-# ~/.config/ranger/rc.conf and add your custom commands there.
+# To change them, it is recommended to create either /etc/ranger/rc.conf
+# (system-wide) or ~/.config/ranger/rc.conf (per user) and add your custom
+# commands there.
 #
 # If you copy this whole file there, you may want to set the environment
 # variable RANGER_LOAD_DEFAULT_RC to FALSE to avoid loading it twice.
@@ -147,7 +148,7 @@ set display_tags_in_all_columns true
 set update_title false
 
 # Set the title to "ranger" in the tmux program?
-set update_tmux_title false
+set update_tmux_title true
 
 # Shorten the title if it gets long?  The number defines how many
 # directories are displayed at once, 0 turns off this feature.
@@ -219,6 +220,10 @@ set cd_tab_fuzzy false
 # disable this feature.
 set preview_max_size 0
 
+# The key hint lists up to this size have their sublists expanded.
+# Otherwise the submaps are replaced with "...".
+set hint_collapse_threshold 10
+
 # Add the highlighted file to the path in the titlebar
 set show_selection_in_titlebar true
 
@@ -273,8 +278,8 @@ alias qall  quitall
 alias qall! quitall!
 alias setl  setlocal
 
-alias filter     scout -prt
-alias find       scout -aeit
+alias filter     scout -prts
+alias find       scout -aets
 alias mark       scout -mr
 alias unmark     scout -Mr
 alias search     scout -rs
@@ -388,6 +393,7 @@ map gL cd -r %f
 map go cd /opt
 map gv cd /var
 map gm cd /media
+map gi eval fm.cd('/run/media/' + os.getenv('USER'))
 map gM cd /mnt
 map gs cd /srv
 map gp cd /tmp
diff --git a/ranger/config/rifle.conf b/ranger/config/rifle.conf
index e2653a76..66e6a5cd 100644
--- a/ranger/config/rifle.conf
+++ b/ranger/config/rifle.conf
@@ -151,7 +151,7 @@ ext pdf, has atril,    X, flag f = atril -- "$@"
 ext pdf, has okular,   X, flag f = okular -- "$@"
 ext pdf, has epdfview, X, flag f = epdfview -- "$@"
 ext pdf, has qpdfview, X, flag f = qpdfview "$@"
-ext pdf, has open,     X, flat f = open "$@"
+ext pdf, has open,     X, flag f = open "$@"
 
 ext docx?, has catdoc,       terminal = catdoc -- "$@" | "$PAGER"
 
diff --git a/ranger/container/settings.py b/ranger/container/settings.py
index e87b6e48..170ace5a 100644
--- a/ranger/container/settings.py
+++ b/ranger/container/settings.py
@@ -46,6 +46,7 @@ ALLOWED_SETTINGS = {
     'freeze_files': bool,
     'global_inode_type_filter': str,
     'hidden_filter': str,
+    'hint_collapse_threshold': int,
     'hostname_in_titlebar': bool,
     'idle_delay': int,
     'iterm2_font_width': int,
diff --git a/ranger/core/actions.py b/ranger/core/actions.py
index 31fa9518..6bbb35aa 100644
--- a/ranger/core/actions.py
+++ b/ranger/core/actions.py
@@ -7,7 +7,7 @@ from __future__ import (absolute_import, division, print_function)
 
 import codecs
 import os
-from os import link, symlink, getcwd, listdir, stat
+from os import link, symlink, listdir, stat
 from os.path import join, isdir, realpath, exists
 import re
 import shlex
@@ -1373,9 +1373,9 @@ class Actions(  # pylint: disable=too-many-instance-attributes,too-many-public-m
             self.notify(new_name)
             try:
                 if relative:
-                    relative_symlink(fobj.path, join(getcwd(), new_name))
+                    relative_symlink(fobj.path, join(self.fm.thisdir.path, new_name))
                 else:
-                    symlink(fobj.path, join(getcwd(), new_name))
+                    symlink(fobj.path, join(self.fm.thisdir.path, new_name))
             except OSError as ex:
                 self.notify('Failed to paste symlink: View log for more info',
                             bad=True, exception=ex)
@@ -1384,7 +1384,7 @@ class Actions(  # pylint: disable=too-many-instance-attributes,too-many-public-m
         for fobj in self.copy_buffer:
             new_name = next_available_filename(fobj.basename)
             try:
-                link(fobj.path, join(getcwd(), new_name))
+                link(fobj.path, join(self.fm.thisdir.path, new_name))
             except OSError as ex:
                 self.notify('Failed to paste hardlink: View log for more info',
                             bad=True, exception=ex)
@@ -1392,7 +1392,7 @@ class Actions(  # pylint: disable=too-many-instance-attributes,too-many-public-m
     def paste_hardlinked_subtree(self):
         for fobj in self.copy_buffer:
             try:
-                target_path = join(getcwd(), fobj.basename)
+                target_path = join(self.fm.thisdir.path, fobj.basename)
                 self._recurse_hardlinked_tree(fobj.path, target_path)
             except OSError as ex:
                 self.notify('Failed to paste hardlinked subtree: View log for more info',
diff --git a/ranger/core/main.py b/ranger/core/main.py
index 4adea918..e39c0501 100644
--- a/ranger/core/main.py
+++ b/ranger/core/main.py
@@ -93,10 +93,7 @@ def main(
         args.selectfile = os.path.abspath(args.selectfile)
         args.paths.insert(0, os.path.dirname(args.selectfile))
 
-    if args.paths:
-        paths = [p[7:] if p.startswith('file:///') else p for p in args.paths]
-    else:
-        paths = [os.environ.get('PWD', os.getcwd())]
+    paths = get_paths(args)
     paths_inaccessible = []
     for path in paths:
         try:
@@ -235,6 +232,24 @@ https://github.com/ranger/ranger/issues
         return exit_code  # pylint: disable=lost-exception
 
 
+def get_paths(args):
+    if args.paths:
+        prefix = 'file:///'
+        prefix_length = len(prefix)
+        paths = [path[prefix_length:] if path.startswith(prefix) else path for path in args.paths]
+    else:
+        start_directory = os.environ.get('PWD')
+        is_valid_start_directory = start_directory and os.path.exists(start_directory)
+        if not is_valid_start_directory:
+            start_directory = __get_home_directory()
+        paths = [start_directory]
+    return paths
+
+
+def __get_home_directory():
+    return os.path.expanduser('~')
+
+
 def xdg_path(env_var):
     path = os.environ.get(env_var)
     if path and os.path.isabs(path):
@@ -339,23 +354,50 @@ def load_settings(  # pylint: disable=too-many-locals,too-many-branches,too-many
     fm.commands.load_commands_from_module(commands_default)
 
     if not clean:
+        system_confdir = os.path.join(os.sep, 'etc', 'ranger')
+        if os.path.exists(system_confdir):
+            sys.path.append(system_confdir)
         allow_access_to_confdir(ranger.args.confdir, True)
 
         # Load custom commands
-        custom_comm_path = fm.confpath('commands.py')
-        if os.path.exists(custom_comm_path):
+        def import_file(name, path):  # From https://stackoverflow.com/a/67692
+            # pragma pylint: disable=no-name-in-module,import-error,no-member
+            if sys.version_info >= (3, 5):
+                import importlib.util as util
+                spec = util.spec_from_file_location(name, path)
+                module = util.module_from_spec(spec)
+                spec.loader.exec_module(module)
+            elif (3, 3) <= sys.version_info < (3, 5):
+                from importlib.machinery import SourceFileLoader
+                module = SourceFileLoader(name, path).load_module()
+            else:
+                import imp
+                module = imp.load_source(name, path)
+            # pragma pylint: enable=no-name-in-module,import-error,no-member
+            return module
+
+        def load_custom_commands(*paths):
             old_bytecode_setting = sys.dont_write_bytecode
             sys.dont_write_bytecode = True
-            try:
-                import commands as commands_custom
-                fm.commands.load_commands_from_module(commands_custom)
-            except ImportError as ex:
-                LOG.debug("Failed to import custom commands from '%s'", custom_comm_path)
-                LOG.exception(ex)
-            else:
-                LOG.debug("Loaded custom commands from '%s'", custom_comm_path)
+            for custom_comm_path in paths:
+                if os.path.exists(custom_comm_path):
+                    try:
+                        commands_custom = import_file('commands',
+                                                      custom_comm_path)
+                        fm.commands.load_commands_from_module(commands_custom)
+                    except ImportError as ex:
+                        LOG.debug("Failed to import custom commands from '%s'",
+                                  custom_comm_path)
+                        LOG.exception(ex)
+                    else:
+                        LOG.debug("Loaded custom commands from '%s'",
+                                  custom_comm_path)
             sys.dont_write_bytecode = old_bytecode_setting
 
+        system_comm_path = os.path.join(system_confdir, 'commands.py')
+        custom_comm_path = fm.confpath('commands.py')
+        load_custom_commands(system_comm_path, custom_comm_path)
+
         # XXX Load plugins (experimental)
         plugindir = fm.confpath('plugins')
         try:
@@ -394,12 +436,17 @@ def load_settings(  # pylint: disable=too-many-locals,too-many-branches,too-many
         allow_access_to_confdir(ranger.args.confdir, False)
         # Load rc.conf
         custom_conf = fm.confpath('rc.conf')
+        system_conf = os.path.join(system_confdir, 'rc.conf')
         default_conf = fm.relpath('config', 'rc.conf')
 
         custom_conf_is_readable = os.access(custom_conf, os.R_OK)
-        if (os.environ.get('RANGER_LOAD_DEFAULT_RC', 'TRUE').upper() != 'FALSE' or
-                not custom_conf_is_readable):
+        system_conf_is_readable = os.access(system_conf, os.R_OK)
+        if (os.environ.get('RANGER_LOAD_DEFAULT_RC', 'TRUE').upper() !=
+                'FALSE' or
+                not (custom_conf_is_readable or system_conf_is_readable)):
             fm.source(default_conf)
+        if system_conf_is_readable:
+            fm.source(system_conf)
         if custom_conf_is_readable:
             fm.source(custom_conf)
 
diff --git a/ranger/ext/human_readable.py b/ranger/ext/human_readable.py
index df74eabf..f365e594 100644
--- a/ranger/ext/human_readable.py
+++ b/ranger/ext/human_readable.py
@@ -15,6 +15,10 @@ def human_readable(byte, separator=' '):  # pylint: disable=too-many-return-stat
     '1023 M'
     """
 
+    # handle automatically_count_files false
+    if byte is None:
+        return ''
+
     # I know this can be written much shorter, but this long version
     # performs much better than what I had before.  If you attempt to
     # shorten this code, take performance into consideration.
diff --git a/ranger/ext/rifle.py b/ranger/ext/rifle.py
index 70215039..672b0597 100755
--- a/ranger/ext/rifle.py
+++ b/ranger/ext/rifle.py
@@ -261,6 +261,14 @@ class Rifle(object):  # pylint: disable=too-many-instance-attributes
             process = Popen(["file", "--mime-type", "-Lb", fname], stdout=PIPE, stderr=PIPE)
             mimetype, _ = process.communicate()
             self._mimetype = mimetype.decode(ENCODING).strip()
+            if self._mimetype == 'application/octet-stream':
+                try:
+                    process = Popen(["mimetype", "--output-format", "%m", fname],
+                                    stdout=PIPE, stderr=PIPE)
+                    mimetype, _ = process.communicate()
+                    self._mimetype = mimetype.decode(ENCODING).strip()
+                except OSError:
+                    pass
         return self._mimetype
 
     def _build_command(self, files, action, flags):
diff --git a/ranger/gui/curses_shortcuts.py b/ranger/gui/curses_shortcuts.py
index ac067d01..14f1e0e4 100644
--- a/ranger/gui/curses_shortcuts.py
+++ b/ranger/gui/curses_shortcuts.py
@@ -35,7 +35,9 @@ class CursesShortcuts(SettingsAware):
 
         try:
             self.win.addstr(*args)
-        except (curses.error, TypeError):
+        except (curses.error, TypeError, ValueError):
+            # a TypeError changed to ValueError from version 3.5 onwards
+            # https://bugs.python.org/issue22215
             if len(args) > 1:
                 self.win.move(y, x)
 
diff --git a/ranger/gui/ui.py b/ranger/gui/ui.py
index 990db0ad..4f76dfab 100644
--- a/ranger/gui/ui.py
+++ b/ranger/gui/ui.py
@@ -113,7 +113,7 @@ class UI(  # pylint: disable=too-many-instance-attributes,too-many-public-method
             self._draw_title = curses.tigetflag('hs')  # has_status_line
 
             # Save tmux setting `automatic-rename`
-            if self.settings.update_tmux_title:
+            if self.settings.update_tmux_title and 'TMUX' in os.environ:
                 try:
                     self._tmux_automatic_rename = check_output(
                         ['tmux', 'show-window-options', '-v', 'automatic-rename']).strip()
@@ -123,7 +123,7 @@ class UI(  # pylint: disable=too-many-instance-attributes,too-many-public-method
         self.update_size()
         self.is_on = True
 
-        if self.settings.update_tmux_title:
+        if self.settings.update_tmux_title and 'TMUX' in os.environ:
             sys.stdout.write("\033kranger\033\\")
             sys.stdout.flush()
 
@@ -172,7 +172,7 @@ class UI(  # pylint: disable=too-many-instance-attributes,too-many-public-method
         DisplayableContainer.destroy(self)
 
         # Restore tmux setting `automatic-rename`
-        if self.settings.update_tmux_title:
+        if self.settings.update_tmux_title and 'TMUX' in os.environ:
             if self._tmux_automatic_rename:
                 try:
                     check_output(['tmux', 'set-window-option',
diff --git a/ranger/gui/widgets/view_base.py b/ranger/gui/widgets/view_base.py
index cb205d92..80061004 100644
--- a/ranger/gui/widgets/view_base.py
+++ b/ranger/gui/widgets/view_base.py
@@ -112,16 +112,62 @@ class ViewBase(Widget, DisplayableContainer):  # pylint: disable=too-many-instan
         self.color_reset()
         self.need_clear = True
         hints = []
-        for key, value in self.fm.ui.keybuffer.pointer.items():
-            key = key_to_string(key)
-            if isinstance(value, dict):
-                text = '...'
-            else:
-                text = value
-            if text.startswith('hint') or text.startswith('chain hint'):
-                continue
-            hints.append((key, text))
-        hints.sort(key=lambda t: t[1])
+
+        def populate_hints(keymap, prefix=""):
+            for key, value in keymap.items():
+                key = prefix + key_to_string(key)
+                if isinstance(value, dict):
+                    populate_hints(value, key)
+                else:
+                    text = value
+                    if text.startswith('hint') or text.startswith('chain hint'):
+                        continue
+                    hints.append((key, text))
+        populate_hints(self.fm.ui.keybuffer.pointer)
+
+        def sort_hints(hints):
+            """Sort the hints by the action string but first group them by the
+            first key.
+
+            """
+            from itertools import groupby
+
+            # groupby needs the list to be sorted.
+            hints.sort(key=lambda t: t[0])
+
+            def group_hints(hints):
+                def first_key(hint):
+                    return hint[0][0]
+
+                def action_string(hint):
+                    return hint[1]
+
+                return (sorted(group, key=action_string)
+                        for _, group
+                        in groupby(
+                            hints,
+                            key=first_key))
+
+            grouped_hints = group_hints(hints)
+
+            # If there are too many hints, collapse the sublists.
+            if len(hints) > self.fm.settings.hint_collapse_threshold:
+                def first_key_in_group(group):
+                    return group[0][0][0]
+                grouped_hints = (
+                    [(first_key_in_group(hint_group), "...")]
+                    if len(hint_group) > 1
+                    else hint_group
+                    for hint_group in grouped_hints
+                )
+
+            # Sort by the first action in group.
+            grouped_hints = sorted(grouped_hints, key=lambda g: g[0][1])
+
+            def flatten(nested_list):
+                return [item for inner_list in nested_list for item in inner_list]
+            return flatten(grouped_hints)
+        hints = sort_hints(hints)
 
         hei = min(self.hei - 1, len(hints))
         ystart = self.hei - hei
diff --git a/tests/ranger/core/__init__.py b/tests/ranger/core/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/tests/ranger/core/__init__.py
diff --git a/tests/ranger/core/test_main.py b/tests/ranger/core/test_main.py
new file mode 100644
index 00000000..d992b8a7
--- /dev/null
+++ b/tests/ranger/core/test_main.py
@@ -0,0 +1,18 @@
+import collections
+import os
+
+from ranger.core import main
+
+
+def test_get_paths():
+    args_tuple = collections.namedtuple('args', 'paths')
+    args = args_tuple(paths=None)
+
+    paths = main.get_paths(args)
+
+    for path in paths:
+        assert os.path.exists(path)
+
+
+if __name__ == '__main__':
+    test_get_paths()