#124 Disambiguate %= which may be a quote or modulo assignment.

zufuliu · nyamatongwe · commit 1e347a1ab265 · 2023-02-15T09:39:11.000+11:00
https://sourceforge.net/p/scintilla/bugs/1255/
diff --git a/lexers/LexRuby.cxx b/lexers/LexRuby.cxx
@@ -1082,7 +1082,7 @@ void ColouriseRbDoc(Sci_PositionU startPos, Sci_Position length, int initStyle,
                     Quote.Open(chNext);
                     advance_char(i, ch, chNext, chNext2); // pass by ref
                     have_string = true;
-                } else if (!isSafeWordcharOrHigh(chNext) && !iswhitespace(chNext) && !isEOLChar(chNext)) {
+                } else if (!isSafeWordcharOrHigh(chNext) && !iswhitespace(chNext) && !isEOLChar(chNext) && chNext != '=') {
                     // Ruby doesn't allow high bit chars here,
                     // but the editor host might
                     Quote.New();
diff --git a/test/examples/ruby/PercentEquals124.rb b/test/examples/ruby/PercentEquals124.rb
@@ -0,0 +1,8 @@
+# Issue 124, disambiguating %= which may be a quote or modulo assignment
+# %-quoting with '=' as the quote
+s = %=3=
+puts s
+x = 7
+# Modulo assignment, equivalent to x = x % 2
+x %=2
+puts x
diff --git a/test/examples/ruby/PercentEquals124.rb.folded b/test/examples/ruby/PercentEquals124.rb.folded
@@ -0,0 +1,9 @@
+ 0 400   0   # Issue 124, disambiguating %= which may be a quote or modulo assignment
+ 0 400   0   # %-quoting with '=' as the quote
+ 0 400   0   s = %=3=
+ 0 400   0   puts s
+ 0 400   0   x = 7
+ 0 400   0   # Modulo assignment, equivalent to x = x % 2
+ 0 400   0   x %=2
+ 0 400   0   puts x
+ 0 400   0   
diff --git a/test/examples/ruby/PercentEquals124.rb.styled b/test/examples/ruby/PercentEquals124.rb.styled
@@ -0,0 +1,8 @@
+{2}# Issue 124, disambiguating %= which may be a quote or modulo assignment{0}
+{2}# %-quoting with '=' as the quote{0}
+{11}s{0} {10}={0} {25}%=3={0}
+{11}puts{0} {11}s{0}
+{11}x{0} {10}={0} {4}7{0}
+{2}# Modulo assignment, equivalent to x = x % 2{0}
+{11}x{0} {10}%={4}2{0}
+{11}puts{0} {11}x{0}
