patch 9.0.0901: setting w_leftcol and handling side effects is confusing
Problem: Setting w_leftcol and handling side effects is confusing.
Solution: Use a function to set w_leftcol() and handle side effects.
diff --git a/src/proto/misc2.pro b/src/proto/misc2.pro
index 3d3a5a6..f596ffa 100644
--- a/src/proto/misc2.pro
+++ b/src/proto/misc2.pro
@@ -19,7 +19,7 @@
void check_cursor(void);
void check_visual_pos(void);
void adjust_cursor_col(void);
-int leftcol_changed(void);
+int set_leftcol(colnr_T leftcol);
int copy_option_part(char_u **option, char_u *buf, int maxlen, char *sep_chars);
int vim_isspace(int x);
int simplify_key(int key, int *modifiers);