add arrow symbols to fonts

accessible by putting ^1 to ^8 (think "arrow number 1", etc) in your text
for narrow-width arrows (good for "wide font" highway signs), or ^a to ^h
for double-width arrows (good for all of the normal narrow-font signs).

in order, arrows 1 and "a" point up, 2/b points up-and-right, 3/c points
right, and so on, turning clockwise

Any other ^x pair just renders directly (no escape char, sorry)

diff --git a/init.lua b/init.lua
index 5d44b2cf29c7a88f69346c9ba3609f3335ea6392..eb78b67eecc6f9c418f9caff66ace40106754f0a 100644 (file)
--- a/init.lua
+++ b/init.lua
@@ -387,6 +387,24 @@ local function make_line_texture(line, lineno, pos)
        for word_i, word in ipairs(line) do
                local chars = { }
                local ch_offs = 0
+               word = string.gsub(word, "%^[12345678abcdefgh]", {
+                       ["^1"] = string.char(0x81),
+                       ["^2"] = string.char(0x82),
+                       ["^3"] = string.char(0x83),
+                       ["^4"] = string.char(0x84),
+                       ["^5"] = string.char(0x85),
+                       ["^6"] = string.char(0x86),
+                       ["^7"] = string.char(0x87),
+                       ["^8"] = string.char(0x88),
+                       ["^a"] = string.char(0x8a),
+                       ["^b"] = string.char(0x8b),
+                       ["^c"] = string.char(0x8c),
+                       ["^d"] = string.char(0x8d),
+                       ["^e"] = string.char(0x8e),
+                       ["^f"] = string.char(0x8f),
+                       ["^g"] = string.char(0x90),
+                       ["^h"] = string.char(0x91)
+               })
                local word_l = #word
                local i = 1
                while i <= word_l  do

diff --git a/textures/hdf_81.png b/textures/hdf_81.png
new file mode 100644 (file)
index 0000000..df38787
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diff --git a/textures/hdf_82.png b/textures/hdf_82.png
new file mode 100644 (file)
index 0000000..e769d35
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diff --git a/textures/hdf_83.png b/textures/hdf_83.png
new file mode 100644 (file)
index 0000000..7c8c59a
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diff --git a/textures/hdf_84.png b/textures/hdf_84.png
new file mode 100644 (file)
index 0000000..9af1a9b
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diff --git a/textures/hdf_85.png b/textures/hdf_85.png
new file mode 100644 (file)
index 0000000..a83d4c3
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diff --git a/textures/hdf_86.png b/textures/hdf_86.png
new file mode 100644 (file)
index 0000000..7ca6698
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diff --git a/textures/hdf_87.png b/textures/hdf_87.png
new file mode 100644 (file)
index 0000000..2b0eba0
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diff --git a/textures/hdf_88.png b/textures/hdf_88.png
new file mode 100644 (file)
index 0000000..ebab336
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diff --git a/textures/hdf_8a.png b/textures/hdf_8a.png
new file mode 100644 (file)
index 0000000..eeac2a1
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diff --git a/textures/hdf_8b.png b/textures/hdf_8b.png
new file mode 100644 (file)
index 0000000..35681f0
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diff --git a/textures/hdf_8c.png b/textures/hdf_8c.png
new file mode 100644 (file)
index 0000000..bbcd100
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diff --git a/textures/hdf_8d.png b/textures/hdf_8d.png
new file mode 100644 (file)
index 0000000..e280cd9
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diff --git a/textures/hdf_8e.png b/textures/hdf_8e.png
new file mode 100644 (file)
index 0000000..c97a758
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diff --git a/textures/hdf_8f.png b/textures/hdf_8f.png
new file mode 100644 (file)
index 0000000..845f51c
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diff --git a/textures/hdf_90.png b/textures/hdf_90.png
new file mode 100644 (file)
index 0000000..bafc851
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diff --git a/textures/hdf_91.png b/textures/hdf_91.png
new file mode 100644 (file)
index 0000000..f5d2462
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