hgeditor: Remove EMAIL default for HGUSER, comment editor selection

# HG changeset patch
# User Radoslaw "AstralStorm" Szkodzinski <[e-mail]>
# Node ID a4c688c8273e392b1bf33cfc736e00ec752a415e
# Parent  be12687d4bf0ce16c4207bef85c188de66efbf53
hgeditor: Remove EMAIL default for HGUSER, comment editor selection 

HGUSER is already set to EMAIL by Python code if needed

hgeditor

@@ -1,51 +1,53 b''
 #!/bin/sh
 #
 # This is an example of using HGEDITOR to automate the signing of
 # commits and so on.
 
 T1=""; T2=""
 cleanup_exit() {
     rm -f "$T1" "$T2"
     exit $1
 }
 
+# If you want to pass your favourite editor some other parameters
+# only for Mercurial, modify this:
 case "${EDITOR:=vi}" in
     emacs)
         EDITOR="$EDITOR -nw"
         ;;
     gvim|vim)
         EDITOR="$EDITOR -f -o"
         ;;
 esac
 
 if grep -q "^HG: merge resolve" "$1" ; then
     # we don't sign merges
     exec $EDITOR "$1"
 else
     # Remove temporary files even if we get interrupted
     trap "cleanup_exit 255" TERM KILL INT QUIT ABRT
     T1=`mktemp`; T2=`mktemp`
 
     # Add manifest hash in order to sign whole repository state.
     # Remove HG: prefix, as we want that to be stored.
     grep '^HG: manifest hash' "$1" | cut -b 5- >> "$T1"
     # Add all other state information
     grep -v '^HG: manifest hash' "$1" >> "$T1"
     (
         cd "`hg root`"
         grep '^HG: changed' "$1" | cut -b 13- | while read changed; do
             hg diff "$changed" >> "$T2"
         done
     )
 
     CHECKSUM=`md5sum "$T1"`
     $EDITOR "$T1" "$T2" || cleanup_exit $?
     echo "$CHECKSUM" | md5sum -c --status && cleanup_exit 13
     {
         head -n 1 "$T1"
         echo
-        grep -v "^HG:" "$T1" | gpg -t -a -u "${HGUSER:-$EMAIL}" --clearsign
+        grep -v "^HG:" "$T1" | gpg -t -a -u "${HGUSER}" --clearsign
     } > "$T2" && mv "$T2" "$1"
     cleanup_exit $?
 fi