[gtksourceview] sh.lang: fix variable definition in conditions

[Christian Hergert <chergert src gnome org>]

commit 499977f11f9e616bbc0c995286cf2eb570950102
Author: Vlasta Vesely <vlastavesely protonmail ch>
Date:   Mon Oct 7 08:52:15 2019 +0200

    sh.lang: fix variable definition in conditions

 data/language-specs/sh.lang       | 2 +-
 tests/syntax-highlighting/file.sh | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/data/language-specs/sh.lang b/data/language-specs/sh.lang
index b4f8be3a..f8e244b7 100644
--- a/data/language-specs/sh.lang
+++ b/data/language-specs/sh.lang
@@ -202,7 +202,7 @@
     </context>
 
     <context id="variable-definition">
-      <match>(^\s*|(?&lt;=then|else|do|export)\s+)([a-zA-Z_][a-zA-Z0-9_]*)\=</match>
+      <match>(^\s*|(?&lt;=if|then|else|do|export|&amp;&amp;|\|\||\|)\s+)([a-zA-Z_][a-zA-Z0-9_]*)\=</match>
       <include>
         <context sub-pattern="2" style-ref="variable-definition"/>
       </include>
diff --git a/tests/syntax-highlighting/file.sh b/tests/syntax-highlighting/file.sh
index 10d63923..93dfb410 100644
--- a/tests/syntax-highlighting/file.sh
+++ b/tests/syntax-highlighting/file.sh
@@ -29,3 +29,8 @@ xxx${x#$HOME}xxx
 xxx${x##*/}xxx
 xxx${x#*}xxx
 xxx${x#"*"}xxx
+
+# Variable definitions
+var=val
+if var=$(cmd); then some; fi
+test -f xxx && var=xxx || var=yyy