Move uncritical files into `etc/` (#350)

This is mainly just to reduce the amount of files in the project root.
The criteria of what gets into `etc/` are the following:

* The file should not be necessary for building nsxiv. This excludes the
  `icon/*` stuff since that's needed by `window.c`.
* The file shouldn't have any valid reason to stay in the project root.
  This excludes things like `README.md`, `.gitignore` etc.

Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/350
Reviewed-by: explosion-mental <explosion-mental@noreply.codeberg.org>

4 files changed, 0 insertions, 109 deletions

diff --git a/examples/image-info b/examples/image-info
deleted file mode 100755
index 5f06123..0000000
--- a/examples/image-info
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/bin/sh
-
-# Example for $XDG_CONFIG_HOME/nsxiv/exec/image-info
-# Called by nsxiv(1) whenever an image gets loaded.
-# The output is displayed in nsxiv's status bar.
-# Arguments:
-#   $1: path to image file (as provided by the user)
-#   $2: image width
-#   $3: image height
-#   $4: fully resolved path to the image file
-
-s="  " # field separator
-
-exec 2>/dev/null
-
-filename=$(basename -- "$1")
-filesize=$(du -Hh -- "$1" | cut -f 1)
-geometry="${2}x${3}"
-
-echo "${filesize}${s}${geometry}${s}${filename}"
-
diff --git a/examples/key-handler b/examples/key-handler
deleted file mode 100755
index 3fe741d..0000000
--- a/examples/key-handler
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/bin/sh
-
-# Example for $XDG_CONFIG_HOME/nsxiv/exec/key-handler
-# Called by nsxiv(1) after the external prefix key (C-x by default) is pressed.
-# The next key combo is passed as its first argument. Passed via stdin are the
-# images to act upon: all marked images, if in thumbnail mode and at least one
-# image has been marked, otherwise the current image. nsxiv(1) will block until
-# the handler terminates. It then checks which images have been modified and
-# reloads them.
-
-# By default nsxiv(1) will send one image per-line to stdin, however when using
-# -0 the image list will be NULL separated and the environment variable
-# "$NSXIV_USING_NULL" will be set to 1.
-
-# The key combo argument has the following form: "[C-][M-][S-]KEY",
-# where C/M/S indicate Ctrl/Meta(Alt)/Shift modifier states and KEY is the X
-# keysym as listed in /usr/include/X11/keysymdef.h without the "XK_" prefix.
-# If KEY has an uppercase equivalent, S-KEY is resolved into it. For instance,
-# K replaces S-k and Scedilla replaces S-scedilla, but S-Delete is sent as-is.
-
-rotate() {
-	degree="$1"
-	tr '\n' '\0' | xargs -0 realpath | sort | uniq | while read file; do
-		case "$(file -b -i "$file")" in
-		image/jpeg*) jpegtran -rotate "$degree" -copy all -outfile "$file" "$file" ;;
-		*)           mogrify  -rotate "$degree" "$file" ;;
-		esac
-	done
-}
-
-case "$1" in
-"C-x")      xclip -in -filter | tr '\n' ' ' | xclip -in -selection clipboard ;;
-"C-c")      while read file; do xclip -selection clipboard -target image/png "$file"; done ;;
-"C-e")      while read file; do urxvt -bg "#444" -fg "#eee" -sl 0 -title "$file" -e sh -c "exiv2 pr -q -pa '$file' | less" & done ;;
-"C-g")      tr '\n' '\0' | xargs -0 gimp & ;;
-"C-r")      while read file; do rawtherapee "$file" & done ;;
-"C-comma")  rotate 270 ;;
-"C-period") rotate  90 ;;
-"C-slash")  rotate 180 ;;
-esac
-
diff --git a/examples/thumb-info b/examples/thumb-info
deleted file mode 100755
index b422f9c..0000000
--- a/examples/thumb-info
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/bin/sh
-
-# Example for $XDG_CONFIG_HOME/nsxiv/exec/thumb-info
-# Called by nsxiv(1) whenever the selected thumbnail changes.
-# The output is displayed in nsxiv's status bar.
-# Arguments:
-#   $1: path to image file (as provided by the user)
-#   $2: empty
-#   $3: empty
-#   $4: fully resolved path to the image file
-
-s="  " # field separator
-
-exec 2>/dev/null
-
-filename=$(basename -- "$4")
-filesize=$(du -Hh -- "$4" | cut -f 1)
-
-echo "${filesize}${s}${filename}"
-
diff --git a/examples/win-title b/examples/win-title
deleted file mode 100755
index 31994ef..0000000
--- a/examples/win-title
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/bin/sh
-
-# Example for $XDG_CONFIG_HOME/nsxiv/exec/win-title
-# Called by nsxiv(1) whenever any of the relevant information changes.
-# The output is set as nsxiv's window title.
-#
-# Arguments, "Optional" arguments might be empty:
-#   $1: resolved absolute path of the current file
-#   $2: current file number
-#   $3: total file number
-#   $4: image width (Optional: Disabled on thumbnails mode)
-#   $5: image height (Optional: Disabled on thumbnails mode)
-#   $6: current zoom (Optional: Disabled on thumbnails mode)
-#
-# The term file is used rather than image as nsxiv does not
-# precheck that the input files are valid images. Total file
-# count may be different from the actual count of valid images.
-
-exec 2>/dev/null
-
-filename="${1##*/}"
-
-if [ -n "$4" ]; then # image mode
-	printf "%s" "nsxiv - ${filename} | ${4}x${5} ${6}% [${2}/${3}]"
-else
-	printf "%s" "nsxiv - ${filename} [${2}/${3}]"
-fi