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-rw-r--r--runtime/doc/syntax.txt11
1 files changed, 10 insertions, 1 deletions
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index c8280173fb..c5f93fd66f 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -188,7 +188,8 @@ A syntax group name doesn't specify any color or attributes itself.
The name for a highlight or syntax group must consist of ASCII letters, digits
and the underscore. As a regexp: "[a-zA-Z0-9_]*". However, Vim does not give
-an error when using other characters.
+an error when using other characters. The maxium length of a group name is
+about 200 bytes. *E1249*
To be able to allow each user to pick their favorite set of colors, there must
be preferred names for highlight groups that are common for many languages.
@@ -1500,6 +1501,14 @@ The enhanced mode also takes advantage of additional color features for a dark
gvim display. Here, statements are colored LightYellow instead of Yellow, and
conditionals are LightBlue for better distinction.
+Both Visual Basic and FORM use the extension ".frm". To detect which one
+should be used, Vim checks for the string "VB_Name" in the first five lines of
+the file. If it is found, filetype will be "vb", otherwise "form".
+
+If the automatic detection doesn't work for you or you only edit, for
+example, FORM files, use this in your startup vimrc: >
+ :let filetype_frm = "form"
+
FORTH *forth.vim* *ft-forth-syntax*