diff options
Diffstat (limited to 'scripts/context/lua/mtxrun.lua')
| -rw-r--r-- | scripts/context/lua/mtxrun.lua | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/scripts/context/lua/mtxrun.lua b/scripts/context/lua/mtxrun.lua index 2666500ea..449c341ab 100644 --- a/scripts/context/lua/mtxrun.lua +++ b/scripts/context/lua/mtxrun.lua @@ -177,7 +177,7 @@ local getinfo = debug.getinfo -- Starting with version 5.2 Lua no longer provide ipairs, which makes -- sense. As we already used the for loop and # in most places the -- impact on ConTeXt was not that large; the remaining ipairs already --- have been replaced. In a similar fashio we also hardly used pairs. +-- have been replaced. In a similar fashion we also hardly used pairs. -- -- Just in case, we provide the fallbacks as discussed in Programming -- in Lua (http://www.lua.org/pil/7.3.html): @@ -1082,6 +1082,23 @@ function table.loweredkeys(t) -- maybe utf return l end +-- new, might move (maybe duplicate) + +function table.unique(old) + local hash = { } + local new = { } + local n = 0 + for i=1,#old do + local oi = old[i] + if not hash[oi] then + n = n + 1 + new[n] = oi + hash[oi] = true + end + end + return new +end + end -- of closure |