Add e function to pipe stuff into emacs from vterm

homebrew/Brewfile

@@ -11,6 +11,7 @@ brew "gnupg"
 brew "grpcurl"
 brew "isync"
 brew "jq"
+brew "kubectx"
 brew "maven"
 brew "msmtp"
 brew "mu"

zsh/.zshrc

@@ -167,6 +167,66 @@ if [[ "$INSIDE_EMACS" = 'vterm' ]]; then
     alias ff='find_file'
 fi
 
+# Utility function that will open a file or let contents get piped into Emacs.
+# Borrowed from: https://www.reddit.com/r/emacs/comments/fk7p49/comment/fkrr5i2
+# Allow piping to a buffer
+function e () {
+    local EMACSOPT=""
+
+    FILES=()
+    while [[ $# -gt 0 ]]; do
+        key="$1"
+        case $key in
+            -*) EMACSOPT+="$key "; shift;;
+            *) FILES+=("$key"); shift;;
+        esac
+    done
+
+    # No options given, make our best guess
+    if [[ ! "${EMACSOPT}" ]]; then
+        if [[ "$INSIDE_EMACS" ]]; then
+            EMACSOPT=""
+        elif [[ "$DISPLAY" ]]; then
+            EMACSOPT="-c "
+        else
+            EMACSOPT="-nw "
+        fi
+    fi
+
+    if [ -p /dev/stdin ]; then
+        # Input is a pipe, set up temp file
+        TMP="$(mktemp)"
+        cat > $TMP
+        FILES+=("$TMP")
+    elif [[ -z "$FILES" && -p /dev/stdout ]]; then
+        TMP="$(mktemp)" # piping out needs a temp file
+        FILES+=("$TMP")
+    fi
+
+    for FILE in "${FILES[@]}"; do
+        FILE=$(readlink -f "${FILE}") # Absolute file path
+        if [[ -p /dev/stdout || "$EMACSOPT" || "$TMP" ]];then
+           emacsclient -q ${EMACSOPT} "$FILE" ;
+           else
+               if [[ $SSH_CONNECTION ]]; then
+                   emacsclient -q -e "(find-file-other-window \"/ssh:${ssh_hostname}:$FILE\")";
+               else
+                   emacsclient -q -e "(find-file-other-window \"$FILE\")";
+               fi
+        fi
+
+           if [ -p /dev/stdout ]; then
+               # Output is a pipe
+               cat $FILE
+           fi
+    done
+
+    if [[ ! -z "$TMP" && -f "$TMP" ]]; then
+        # Cleanup tmp files
+        rm $TMP
+    fi
+}
+
 # This is to change the title of the buffer based on information provided by the
 # shell. See, http://tldp.org/HOWTO/Xterm-Title-4.html, for the meaning of the
 # various symbols.