From a234636982349a82ab6c7f0674f3ff884acddc94 Mon Sep 17 00:00:00 2001
From: Dominik Ritter <dritter03@googlemail.com>
Date: Wed, 12 Jul 2017 03:29:31 +0200
Subject: [PATCH] Fix empty delimiter

Even if the delimiter is empty, the min length should be 1.
This fixes #558
---
 functions/utilities.zsh |  2 +-
 test/segments/dir.spec  | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/functions/utilities.zsh b/functions/utilities.zsh
index 86e5ba0..39c5eca 100644
--- a/functions/utilities.zsh
+++ b/functions/utilities.zsh
@@ -212,7 +212,7 @@ function segmentShouldBeJoined() {
 # Given a directory path, truncate it according to the settings for
 # `truncate_from_right`
 function truncatePathFromRight() {
-  local delim_len=${#POWERLEVEL9K_SHORTEN_DELIMITER}
+  local delim_len=${#POWERLEVEL9K_SHORTEN_DELIMITER:-1}
   echo $1 | sed $SED_EXTENDED_REGEX_PARAMETER \
  "s@(([^/]{$((POWERLEVEL9K_SHORTEN_DIR_LENGTH))})([^/]{$delim_len}))[^/]+/@\2$POWERLEVEL9K_SHORTEN_DELIMITER/@g"
 }
diff --git a/test/segments/dir.spec b/test/segments/dir.spec
index b299117..3a6af64 100755
--- a/test/segments/dir.spec
+++ b/test/segments/dir.spec
@@ -72,6 +72,26 @@ function testTruncationFromRightWorks() {
   unset POWERLEVEL9K_SHORTEN_STRATEGY
 }
 
+function testTruncationFromRightWithEmptyDelimiter() {
+  POWERLEVEL9K_SHORTEN_DIR_LENGTH=2
+  POWERLEVEL9K_SHORTEN_DELIMITER=""
+  POWERLEVEL9K_SHORTEN_STRATEGY='truncate_from_right'
+
+  FOLDER=/tmp/powerlevel9k-test/1/12/123/1234/12345/123456/1234567/12345678/123456789
+  mkdir -p $FOLDER
+  cd $FOLDER
+
+  assertEquals "%K{blue} %F{black}/tmp/po/1/12/123/12/12/12/12/12/123456789 %k%F{blue}%f " "$(build_left_prompt)"
+
+  cd -
+  rm -fr /tmp/powerlevel9k-test
+
+  unset FOLDER
+  unset POWERLEVEL9K_SHORTEN_DIR_LENGTH
+  unset POWERLEVEL9K_SHORTEN_DELIMITER
+  unset POWERLEVEL9K_SHORTEN_STRATEGY
+}
+
 function testTruncateWithFolderMarkerWorks() {
   POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(dir)
   POWERLEVEL9K_SHORTEN_STRATEGY="truncate_with_folder_marker"