patch 9.0.0007: no support for double, dotted and dashed underlines
Problem: No support for double, dotted and dashed underlines.
Solution: Add the termcap entries and highlight modes. (closes #9553)
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 84ab1fb..1d14c44 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -4211,7 +4211,10 @@
b bold (termcap entry "md" and "me")
s standout (termcap entry "so" and "se")
u underline (termcap entry "us" and "ue")
- c undercurl (termcap entry "Cs" and "Ce")
+ c undercurl (termcap entry "Us" and "Ce")
+ 2 double underline (termcap entry "Ds" and "Ce")
+ d dotted underline (termcap entry "ds" and "Ce")
+ = dashed underline (termcap entry "Ds" and "Ce")
t strikethrough (termcap entry "Ts" and "Te")
n no highlighting
- no highlighting
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index c3d6777..1229b19 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -5002,14 +5002,18 @@
1. highlight arguments for normal terminals
*bold* *underline* *undercurl*
- *inverse* *italic* *standout*
- *nocombine* *strikethrough*
+ *underdouble* *underdotted*
+ *underdashed* *inverse* *italic*
+ *standout* *nocombine* *strikethrough*
term={attr-list} *attr-list* *highlight-term* *E418*
attr-list is a comma-separated list (without spaces) of the
following items (in any order):
bold
underline
undercurl not always available
+ underdouble not always available
+ underdotted not always available
+ underdashed not always available
strikethrough not always available
reverse
inverse same as reverse
@@ -5020,6 +5024,7 @@
Note that "bold" can be used here and by using a bold font. They
have the same effect.
+ *underline-codes*
"undercurl" is a curly underline. When "undercurl" is not possible
then "underline" is used. In general "undercurl" and "strikethrough"
are only available in the GUI and some terminals. The color is set
@@ -5028,6 +5033,17 @@
let &t_Cs = "\e[4:3m"
let &t_Ce = "\e[4:0m"
+< "underdouble" is a double underline, "underdotted" is a dotted
+ underline and "underdashed" is a dashed underline. These are only
+ supported by some terminals. If your terminal supports them you may
+ have to specify the codes like this: >
+ let &t_Us = "\e[4:2m"
+ let &t_ds = "\e[4:4m"
+ let &t_Ds = "\e[4:5m"
+< They are reset with |t_Ce|, the same as curly underline (undercurl).
+ When t_Us, t_ds or t_Ds is not set then underline will be used as a
+ fallback.
+
start={term-list} *highlight-start* *E422*
stop={term-list} *term-list* *highlight-stop*
diff --git a/runtime/doc/term.txt b/runtime/doc/term.txt
index f103405..c4199c2 100644
--- a/runtime/doc/term.txt
+++ b/runtime/doc/term.txt
@@ -372,8 +372,11 @@
Added by Vim (there are no standard codes for these):
t_AU set underline color (ANSI) *t_AU* *'t_AU'*
- t_Ce undercurl end *t_Ce* *'t_Ce'*
- t_Cs undercurl mode *t_Cs* *'t_Cs'*
+ t_Ce undercurl and underline end *t_Ce* *'t_Ce'*
+ t_Cs undercurl (curly underline) mode *t_Cs* *'t_Cs'*
+ t_Us double underline mode *t_Us* *'t_Us'*
+ t_ds dotted underline mode *t_ds* *'t_ds'*
+ t_Ds dashed underline mode *t_Ds* *'t_Ds'*
t_Te strikethrough end *t_Te* *'t_Te'*
t_Ts strikethrough mode *t_Ts* *'t_Ts'*
t_IS set icon text start *t_IS* *'t_IS'*