Merge pull request #1379 from leventyalcin/feature/save_history_immediately

add an env var that themes can save history immediately

themes/base.theme.bash

@@ -499,3 +499,8 @@ function safe_append_prompt_command {
         fi
     fi
 }
+
+function _save-and-reload-history() {
+  local autosave=${1:-0}
+  [[ $autosave -eq 1 ]] && history -a && history -c && history -r
+}

themes/powerline-plain/powerline-plain.base.bash

@@ -14,6 +14,8 @@ function __powerline_prompt_command {
 
   LEFT_PROMPT=""
 
+  _save-and-reload-history "${HISTORY_AUTOSAVE:-0}"
+
   ## left prompt ##
   for segment in $POWERLINE_PROMPT; do
     local info="$(__powerline_${segment}_prompt)"

themes/powerline-plain/powerline-plain.theme.bash

@@ -55,4 +55,3 @@ HOST_THEME_PROMPT_COLOR=0
 POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby cwd"}
 
 safe_append_prompt_command __powerline_prompt_command
-

themes/powerline/powerline.theme.bash

@@ -57,4 +57,6 @@ HOST_THEME_PROMPT_COLOR=0
 
 POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby cwd"}
 
+HISTORY_AUTOSAVE=${HISTORY_AUTOSAVE:-0}
+
 safe_append_prompt_command __powerline_prompt_command