Merge upstream/master

modules/editor/init.zsh

@@ -318,6 +318,7 @@ bindkey -M vicmd "$key_info[Control]X$key_info[Control]E" edit-command-line
 
 # Undo/Redo
 bindkey -M vicmd "u" undo
+bindkey -M viins "$key_info[Control]_" undo
 bindkey -M vicmd "$key_info[Control]R" redo
 
 if (( $+widgets[history-incremental-pattern-search-backward] )); then

modules/helper/init.zsh

@@ -49,3 +49,8 @@ function is-bsd {
 function is-cygwin {
   [[ "$OSTYPE" == cygwin* ]]
 }
+
+# is true on termux (Android)
+function is-termux {
+  [[ "$OSTYPE" == linux-android ]]
+}

modules/python/init.zsh

@@ -71,7 +71,7 @@ function _python-workon-cwd {
   if [[ "$ENV_NAME" != "" ]]; then
     # Activate the environment only if it is not already active
     if [[ "$VIRTUAL_ENV" != "$WORKON_HOME/$ENV_NAME" ]]; then
-      if [[ -e "$WORKON_HOME/$ENV_NAME/bin/activate" ]]; then
+      if [[ -n "$WORKON_HOME" && -e "$WORKON_HOME/$ENV_NAME/bin/activate" ]]; then
         workon "$ENV_NAME" && export CD_VIRTUAL_ENV="$ENV_NAME"
       elif [[ -e "$ENV_NAME/bin/activate" ]]; then
         source $ENV_NAME/bin/activate && export CD_VIRTUAL_ENV="$ENV_NAME"

modules/utility/init.zsh

@@ -140,6 +140,10 @@ elif is-cygwin; then
   alias o='cygstart'
   alias pbcopy='tee > /dev/clipboard'
   alias pbpaste='cat /dev/clipboard'
+elif is-termux; then
+  alias o='termux-open'
+  alias pbcopy='termux-clipboard-set'
+  alias pbpaste='termux-clipboard-get'
 else
   alias o='xdg-open'