patch 9.1.0030: Cannot use terminal alternate font
Problem: Cannot use terminal alternate fonts (PMunch)
Solution: Support terminal alternate fonts using
CSI SGR 10-20 and t_CF code (PMunch)
Add support for alternate font highlighting
This adds support for alternate font highlighting using CSI SGR 10-20.
Few terminals currently support this, but with added tool support this
should improve over time. The change here is more or less taken from how
colors are configured and applied, but there might be some parts I
missed while implementing it. Changing fonts is done through the new
`:hi ctermfont` attribute which takes a number, 0 is the normal font, and
the numbers 1-9 select an "alternative" font. Which fonts are in use is
up to the terminal.
fixes: #13513
closes: #13537
Signed-off-by: PMunch <peterme@peterme.net>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/term.c b/src/term.c
index 734b759..2e2c6df 100644
--- a/src/term.c
+++ b/src/term.c
@@ -625,7 +625,7 @@
#ifdef FEAT_TERMGUICOLORS
/*
- * Additions for using the RGB colors
+ * Additions for using the RGB colors and terminal font
*/
static tcap_entry_T builtin_rgb[] = {
// These are printf strings, not terminal codes.
@@ -637,6 +637,12 @@
};
#endif
+static tcap_entry_T special_term[] = {
+ // These are printf strings, not terminal codes.
+ {(int)KS_CF, "\033[%dm"},
+ {(int)KS_NAME, NULL} // end marker
+};
+
/*
* iris-ansi for Silicon Graphics machines.
*/
@@ -1235,6 +1241,7 @@
{(int)KS_U7, "[U7]"},
{(int)KS_RFG, "[RFG]"},
{(int)KS_RBG, "[RBG]"},
+ {(int)KS_CF, "[CF%d]"},
{K_UP, "[KU]"},
{K_DOWN, "[KD]"},
{K_LEFT, "[KL]"},
@@ -1754,6 +1761,7 @@
{KS_CBE, "BE"}, {KS_CBD, "BD"},
{KS_CST, "ST"}, {KS_CRT, "RT"},
{KS_SSI, "Si"}, {KS_SRI, "Ri"},
+ {KS_CF, "CF"},
{(enum SpecialKey)0, NULL}
};
int i;
@@ -2113,6 +2121,8 @@
&& term_strings_not_set(KS_8U))
apply_builtin_tcap(term, builtin_rgb, TRUE);
#endif
+ if (term_strings_not_set(KS_CF))
+ apply_builtin_tcap(term, special_term, TRUE);
}
/*
@@ -3116,6 +3126,17 @@
}
#endif
+ void
+term_font(int n)
+{
+ if (*T_CFO)
+ {
+ char buf[20];
+ sprintf(buf, (char *)T_CFO, 9 + n);
+ OUT_STR(buf);
+ }
+}
+
static void
term_color(char_u *s, int n)
{