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Fix cursor move with wide glyphs - st - simple terminal |
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git clone git://git.suckless.org/st |
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--- |
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commit 7473a8d1a57e5f9aba41b953f4e498c35e1c9dc5 |
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parent a3f7420310be0fd778ef9fe2abf20edc2d8dc81a |
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Author: Quentin Rameau <[email protected]> |
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Date: Sun, 25 Feb 2024 01:31:31 +0100 |
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Fix cursor move with wide glyphs |
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st would always move back 1 column, |
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even with wide glyhps (using more than a single column). |
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The glyph rune is set on its first column, |
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and the other ones are to 0, |
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so loop until we detect the start of the previous glyph. |
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Diffstat: |
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M st.c | 10 +++++++--- |
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1 file changed, 7 insertions(+), 3 deletions(-) |
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--- |
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diff --git a/st.c b/st.c |
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@@ -86,8 +86,8 @@ enum escape_state { |
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typedef struct { |
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Glyph attr; /* current char attributes */ |
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- int x; |
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- int y; |
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+ int x; /* terminal column */ |
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+ int y; /* terminal row */ |
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char state; |
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} TCursor; |
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@@ -2175,12 +2175,16 @@ tstrsequence(uchar c) |
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void |
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tcontrolcode(uchar ascii) |
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{ |
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+ size_t i; |
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+ |
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switch (ascii) { |
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case '\t': /* HT */ |
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tputtab(1); |
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return; |
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case '\b': /* BS */ |
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- tmoveto(term.c.x-1, term.c.y); |
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+ for (i = 1; term.c.x && term.line[term.c.y][term.c.x - i].u ==… |
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+ ; |
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+ tmoveto(term.c.x - i, term.c.y); |
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return; |
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case '\r': /* CR */ |
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tmoveto(0, term.c.y); |
