Make pret-trans call pret-lam indirectly.

[matthijs/master-project/report.git] / pret-lam.lua

diff --git a/pret-lam.lua b/pret-lam.lua
index 568da7f565fbe7f28f7f63bf2f6986924baa418b..6935043297ee5077a9e77495187b4ad0623e7662 100644 (file)
--- a/pret-lam.lua
+++ b/pret-lam.lua
@@ -35,6 +35,7 @@ local keywords = {
     ['letrec'] = {},
     ['letnonrec'] = {},
     ['in'] = {},
+    ['DEFAULT'] = {},
 }
 
 local in_block = 0
@@ -42,6 +43,10 @@ local submatches = {}
 local bases = {}
 -- Store the last line for each indent level
 local indentlines = {}
+-- The amount of indent of the first line, which we will strip of all
+-- subsequent lines. This allows the entire block to be indented as normal in
+-- the tex source code.
+local first_indent
 
 -- See if str starts with a symbol, and return the remaining string and that
 -- symbol. If no symbol from the table is matched, just returns the first
@@ -128,6 +133,17 @@ end
 --   line4, and line is no longer in scope since it is replaced by line4.
 local function do_indent(line)
     newind, rest = utf.match(line, '^(%s*)(.*)')
+  
+    -- Store the first line's indent
+    if not first_indent then 
+        first_indent = utf.len(newind)
+    end
+
+    -- Strip the indent of the first line from this line's indent.
+    newind = utf.sub(newind, first_indent + 1) 
+    -- Rebuild line, so we can still use it below
+    line = newind .. rest
+
     prev = -1
     -- Loop all the previous lines
     for indent, unused in pairs(indentlines) do
@@ -191,13 +207,14 @@ function vis.begin_of_display()
     if in_block == 0 then
         -- Initially allow subscripts using _ or just appending a number (later,
         -- we will add extra patterns here.
-        submatches = {"^(%a*)_([%a%d,]+)$", "^(%a+)(%d+)$"}
+        submatches = {"^(%a*)_([%a%d,]+)$", "^(%a+)([%d,]+)$"}
         -- This stores all the bases we've encountered so far (to prevent
         -- duplicates). For each of them there will be a pattern in submatches
         -- above.
         bases = {}
     end
     indentlines = {}
+    first_indent = nil
 end