看看我的 Tmux 状态栏：
我看不到符号。我该如何解决这个问题？
我的配置文件是这些：
.Xresurces
#define S_base03 #002b36
#define S_base02 #073642
#define S_base01 #586e75
#define S_base00 #657b83
#define S_base0 #839496
#define S_base1 #93a1a1
#define S_base2 #eee8d5
#define S_base3 #fdf6e3
#define S_yellow #b58900
#define S_orange #cb4b16
#define S_red #dc322f
#define S_magenta #d33682
#define S_violet #6c71c4
#define S_blue #268bd2
#define S_cyan #2aa198
#define S_green #859900
URxvt*background: S_base03
URxvt*foreground: S_base0
URxvt*fading: 40
URxvt*fadeColor: S_base03
URxvt*cursorColor: S_base1
URxvt*pointerColorBackground:S_base01
URxvt*pointerColorForeground:S_base1
!! black dark/light
URxvt*color0: S_base02
URxvt*color8: S_base03
!! red dark/light
URxvt*color1: S_red
URxvt*color9: S_orange
!! green dark/light
URxvt*color2: S_green
URxvt*color10: S_base01
!! yellow dark/light
URxvt*color3: S_yellow
URxvt*color11: S_base00
!! blue dark/light
URxvt*color4: S_blue
URxvt*color12: S_base0
!! magenta dark/light
URxvt*color5: S_magenta
URxvt*color13: S_violet
!! cyan dark/light
URxvt*color6: S_cyan
URxvt*color14: S_base1
!! white dark/light
URxvt*color7: S_base2
URxvt*color15: S_base3
URxvt*font: xft:Inconsolata for Powerline:size=12,xft:PowerlineSymbols:pixelsize=12:antialias=true
URxvt*scrollBar: False
URxvt*scrollTtyOutput: False
URxvt*scrollTtyKeypress: True
URxvt*secondaryScroll: True
URxvt*saveLines: 8000
URxvt*letterSpace: 0
URxvt*cursorBlink: True
URxvt*cursorUnderline: True
URxvt*modifier: alt
URxvt.perl-ext-common : default,matcher,keyboard-select,url-select,clipboard
URxvt.tabbed.tabbar-fg: 5
URxvt.tabbed.tabbar-bg: 0
URxvt.tabbed.tab-fg: 14
URxvt.tabbed.tab-bg: 0
URxvt.keysym.M-Escape: perl:keyboard-select:activate
URxvt.keysym.M-s: perl:keyboard-select:search
URxvt.keysym.M-u: perl:url-select:select_next
URxvt.url-select.autocopy: True
URvxt.url-select.button: 2
URxvt.url-select.launcher: firefox
URxvt.url-select.underline: True
URxvt.keysym.M-c: perl:clipboard:copy
URxvt.keysym.M-v: perl:clipboard:paste
URxvt.keysym.M-C-v: perl:clipboard:paste_escaped
和.tmux.conf：
# use UTF8
set -g utf8
set-window-option -g utf8 on
set -g status on
set -g status-utf8 on
# make tmux display things in 256 colors
set -g default-terminal "screen-256color"
# set scrollback history to 10000 (10k)
set -g history-limit 10000
# set Ctrl-a as the default prefix key combination
# and unbind C-b to free it up
set -g prefix C-a
unbind C-b
# use send-prefix to pass C-a through to application
bind C-a send-prefix
# shorten command delay
set -sg escape-time 1
# set window and pane index to 1 (0 by default)
set-option -g base-index 1
setw -g pane-base-index 1
# reload ~/.tmux.conf using PREFIX r
bind r source-file ~/.tmux.conf \; display "Reloaded!"
# use PREFIX | to split window horizontally and PREFIX - to split vertically
bind | split-window -h
bind - split-window -v
# Make the current window the first window
bind T swap-window -t 1
# map Vi movement keys as pane movement keys
bind -n S-down new-window
bind -n C-right select-pane -R
bind -n C-left select-pane -L
bind -n C-up select-pane -U
bind -n C-down select-pane -D
bind -n S-right next
bind -n S-left prev
bind l select-pane -R
# and use C-h and C-l to cycle thru panes
bind -r C-h select-window -t :-
bind -r C-l select-window -t :+
# resize panes using PREFIX H, J, K, L
bind H resize-pane -L 10
bind J resize-pane -D 10
bind K resize-pane -U 10
bind L resize-pane -R 10
# C-i for even-vertical arrangement and C-o to zoom current pane
bind-key C-i select-layout even-vertical
bind-key C-v select-layout even-horizontal
#bind-key C-o resize-pane -y 1000
# Sync panes
bind C-s set-window-option synchronize-panes
# explicitly disable mouse control
setw -g mode-mouse off
set -g mouse-select-pane off
set -g mouse-resize-pane off
set -g mouse-select-window off
# ---------------------
# Copy & Paste
# ---------------------
# provide access to the clipboard for pbpaste, pbcopy
#set-option -g default-command "reattach-to-user-namespace -l zsh"
set-window-option -g automatic-rename on
# use vim keybindings in copy mode
setw -g mode-keys vi
bind y run 'tmux save-buffer - | reattach-to-user-namespace pbcopy '
bind C-y run 'tmux save-buffer - | reattach-to-user-namespace pbcopy '
# -----------------------
# Multistart panes
# ----------------------
bind-key P run-shell 'tmux-multistart as'
bind-key A run-shell 'tmux-multistart alpha'
bind-key B run-shell 'tmux-multistart beta'
bind-key W run-shell 'tmux-multistart web'
bind-key D run-shell 'tmux-multistart dev'
bind-key T run-shell 'tmux-multistart txhub'
bind-key C command-prompt -p "machine(s)/group: " "run-shell 'tmux-multistart %1'"
# ----------------------
# set some pretty colors
# ----------------------
# set pane colors - hilight the active pane
set-option -g pane-border-fg colour235 #base02
set-option -g pane-active-border-fg colour240 #base01
# colorize messages in the command line
set-option -g message-bg black #base02
set-option -g message-fg brightred #orange
# ----------------------
# Status Bar
# -----------------------
# visual notification of activity in other windows
setw -g monitor-activity on
set -g visual-activity on
# set color for status bar
set-option -g status-bg colour236 #base02
set-option -g status-fg yellow #yellow
set-option -g status-attr dim
# set window list colors - red for active and cyan for inactive
set-window-option -g window-status-fg brightblue #base0
set-window-option -g window-status-bg colour236
set-window-option -g window-status-attr dim
set-window-option -g window-status-current-fg brightred #orange
set-window-option -g window-status-current-bg colour236
set-window-option -g window-status-current-attr bright
# show host name and IP address on left side of status bar
set -g status-left-length 85
set -g status-right-length 60
set -g status-right '#[fg=colour16,bg=colour254,bold] #S #[fg=colour254,bg=colour234,nobold]'
set -g status-left '#(eval tmux-airline `tmux display -p "#{client_width}"`)'
set -g window-status-format "#[fg=colour244,bg=colour234]#I #[fg=colour240] #[default]#W "
set -g window-status-current-format "#[fg=colour234,bg=colour31]#[fg=colour117,bg=colour31] #I #[fg=colour231,bold]#W #[fg=colour31,bg=colour234,nobold]"