vis: introduce registers 0-9 and & to capture search matches

These are currently only updated for `x` and `y` sam commands,
whether they should be updated for other search related activities
(`/`, `?`, `n`, `N`, `*`, `#` etc.) needs to be investigated.

1 files changed, 10 insertions, 0 deletions

diff --git a/vis.h b/vis.h
index ab18d3b..4853c48 100644
--- a/vis.h
+++ b/vis.h
@@ -400,6 +400,16 @@ void vis_mark_set(Vis*, enum VisMark mark, size_t pos);
 enum VisRegister {
 	VIS_REG_DEFAULT,    /* used when no other register is specified */
 	VIS_REG_ZERO,       /* yank register */
+	VIS_REG_AMPERSAND,  /* last regex match */
+	VIS_REG_1,	    /* 1-9 last sub-expression matches */
+	VIS_REG_2,
+	VIS_REG_3,
+	VIS_REG_4,
+	VIS_REG_5,
+	VIS_REG_6,
+	VIS_REG_7,
+	VIS_REG_8,
+	VIS_REG_9,
 	VIS_REG_BLACKHOLE,  /* /dev/null register */
 	VIS_REG_CLIPBOARD,  /* system clipboard register */
 	VIS_MACRO_REPEAT,   /* copy of the above macro once the recording is finished */