runtime(java): Document "g:java_space_errors" and "g:java_comment_strings"

closes: #15399

Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index 8af731fb1607e9ec1b80a85fd43ffc0ade33e5c3..8cefb0e65cbe41b39a68b8f724f939a26dd59211 100644 (file)
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt*   For Vim version 9.1.  Last change: 2024 Jul 30
+*syntax.txt*   For Vim version 9.1.  Last change: 2024 Jul 31
 
 
                  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -2132,6 +2132,16 @@ actually appear in Javadoc comments.  The variables to use are >
        :let g:java_vb = 1
 Note that these three variables are maintained in the HTML syntax file.
 
+Numbers and strings can be recognized in non-Javadoc comments with >
+       :let g:java_comment_strings = 1
+
+Trailing whitespace characters or a run of space characters before a tab
+character can be marked as an error with >
+       :let g:java_space_errors = 1
+but either kind of an error can be suppressed by also defining one of >
+       :let g:java_no_trail_space_error = 1
+       :let g:java_no_tab_space_error = 1
+
 In order to highlight nested parens with different colors, define colors for
 `javaParen`, `javaParen1`, and `javaParen2`.  For example, >
        :hi link javaParen Comment