docs: update

README.md

@@ -32,9 +32,10 @@ _/\ __)/_)    pkgs   130
 
 - [ ] Add optional and additional information detection.
     - [ ] CPU
-    - [ ] Terminal Emulator
+    - [ ] Terminal Emulator ([#12](https://github.com/dylanaraps/pfetch/pull/12))
         - The way I implement this in `neofetch` is interesting.
-    - [ ] Terminal colors
+    - [x] Terminal colors ([commit](https://github.com/dylanaraps/pfetch/commit/ba03cb3cf4dfbc767abce6acd53c07ab5568e23d))
+    - [ ] Window manager ([#13](https://github.com/dylanaraps/pfetch/pull/13))
     - [ ] ???
 - [ ] Expand operating system support.
     - [ ] Solaris ([#5](https://github.com/dylanaraps/pfetch/issues/5))
@@ -46,7 +47,7 @@ _/\ __)/_)    pkgs   130
         - [ ] CYGWIN
         - [ ] MSYS
         - [ ] MINGW
-        - [ ] WSL (*this is fairly simple*)
+        - [x] WSL (*this is fairly simple*)
 
 ## Configuration
 
@@ -58,7 +59,7 @@ _/\ __)/_)    pkgs   130
 # Default: first example below
 # Valid: space separated string
 #
-# OFF by default: shell
+# OFF by default: shell palette
 PF_INFO="ascii title distro host kernel uptime pkgs memory"
 
 # Example: Only ASCII.

pfetch

@@ -154,6 +154,12 @@ get_os() {
             if command -v lsb_release; then
                 distro=$(lsb_release -sd)
 
+                # lsb_release sometimes adds quotes around the output,
+                # this simply remove quotes from the start/end if they
+                # exist.
+                distro=${distro##\"}
+                distro=${distro%%\"}
+
             else
                 # Disable warning about shellcheck not being able
                 # to read '/etc/os-release'. This is fine.
@@ -165,6 +171,19 @@ get_os() {
             # don't follow any os-release/lsb standards whatsoever.
             command -v crux        && distro=$(crux)
             command -v guix        && distro='Guix System'
+
+            # Check to see if Linux is running in Windows 10 under
+            # WSL (Windows subsystem for Linux) and append a string
+            # accordingly.
+            #
+            # If the kernel version string ends in "-Microsoft",
+            # we're very likely running under Windows 10 in WSL.
+            #
+            # This also acts as a means of allowing the user to
+            # fake this by changing their kernel version to end in
+            # "Microsoft".
+            [ "${kernel%%*-Microsoft}" ] ||
+                distro="$distro on Windows 10"
         ;;
 
         Darwin*)
@@ -356,6 +375,10 @@ get_uptime() {
 }
 
 get_pkgs() {
+    # This is just a simple wrapper around 'command -v' to avoid
+    # spamming '>/dev/null' throughout this function.
+    has() { command -v "$1" >/dev/null; }
+
     # This works by first checking for which package managers are
     # installed and finally by printing each package manager's
     # package list with each package one per line.
@@ -376,27 +399,27 @@ get_pkgs() {
         case $os in
             Linux*)
                 # Commands which print packages one per line.
-                command -v kiss       && kiss l
+                has kiss       && kiss l
-                command -v bonsai     && bonsai list
+                has bonsai     && bonsai list
-                command -v pacman-key && pacman -Qq
+                has pacman-key && pacman -Qq
-                command -v dpkg       && dpkg-query -f '.\n' -W
+                has dpkg       && dpkg-query -f '.\n' -W
-                command -v rpm        && rpm -qa
+                has rpm        && rpm -qa
-                command -v xbps-query && xbps-query -l
+                has xbps-query && xbps-query -l
-                command -v apk        && apk info
+                has apk        && apk info
 
                 # Directories containing packages.
-                command -v brew       && printf '%s\n' "$(brew --cellar)/"*
+                has brew       && printf '%s\n' "$(brew --cellar)/"*
-                command -v emerge     && printf '%s\n' /var/db/pkg/*/*/
+                has emerge     && printf '%s\n' /var/db/pkg/*/*/
-                command -v pkgtool    && printf '%s\n' /var/log/packages/*
+                has pkgtool    && printf '%s\n' /var/log/packages/*
 
                 # GUIX requires two commands.
-                command -v guix       && {
+                has guix       && {
                     guix package -p /run/current-system/profile -I
                     guix package -I
                 }
 
                 # NIX requires two commands.
-                command -v nix-store  && {
+                has nix-store  && {
                     nix-store -q --requisites /run/current-system/sw
                     nix-store -q --requisites ~.nix-profile
                 }
@@ -404,11 +427,11 @@ get_pkgs() {
 
             Darwin*)
                 # Commands which print packages one per line.
-                command -v pkgin      && pkgin list
+                has pkgin      && pkgin list
-                command -v port       && port installed
+                has port       && port installed
 
                 # Directories containing packages.
-                command -v brew       && printf '%s\n' /usr/local/Cellar/*
+                has brew       && printf '%s\n' /usr/local/Cellar/*
             ;;
 
             FreeBSD*)
@@ -576,6 +599,21 @@ get_memory() {
     log memory "${mem_used:-?}M / ${mem_full:-?}M" >&6
 }
 
+get_palette() {
+    # Print the first 8 terminal colors. This uses the existing
+    # sequences to change text color with a sequence prepended
+    # to reverse the foreground and background colors.
+    #
+    # This allows us to save hardcoding a second set of sequences
+    # for background colors.
+    palette="  $c1  $c2  $c3  $c4  $c5  $c6  $c7  "
+
+    # Print the palette with a newline before and after.
+    # The '\033[%sC' moves the text to the right, the
+    # length of the ascii art.
+    printf '\n[%sC%s\n' "${ascii_width-1}" "$palette" >&6
+}
+
 get_ascii() {
     # This is a simple function to read the contents of
     # an ascii file from 'stdin'. It allows for the use