Let escript recognize an encoding comment on the second line

The manual says that an Emacs directive can be placed on the second
line. With this patch that directive is also recognized when selecting
encoding of the script.

4 files changed, 38 insertions, 1 deletions

diff --git a/lib/stdlib/test/escript_SUITE_data/unicode3 b/lib/stdlib/test/escript_SUITE_data/unicode3
index 944487dcae..0702ecf309 100755
--- a/lib/stdlib/test/escript_SUITE_data/unicode3
+++ b/lib/stdlib/test/escript_SUITE_data/unicode3
@@ -1,5 +1,5 @@
 #!/usr/bin/env escript
-%% -*- erlang; coding: utf-8 -*-
+%% -*- erlang; coding: latin-1 -*-
 
 -export([main/1]).
 
diff --git a/lib/stdlib/test/escript_SUITE_data/unicode4 b/lib/stdlib/test/escript_SUITE_data/unicode4
new file mode 100755
index 0000000000..a7563a613a
--- /dev/null
+++ b/lib/stdlib/test/escript_SUITE_data/unicode4
@@ -0,0 +1,12 @@
+#!/usr/bin/env escript
+%% -*- erlang; encoding:utf-8 -*-
+
+-export([main/1]).
+
+main(_) ->
+    ok = io:setopts([{encoding,unicode}]),
+    Bin1 = <<"örn_Ѐ שלום-שלום+של 日本語">>,
+    L = [246,114,110,95,1024,32,1513,1500,1493,1501,45,1513,1500,1493,
+         1501,43,1513,1500,32,26085,26412,35486],
+    L = unicode:characters_to_list(Bin1, utf8),
+    ok.
diff --git a/lib/stdlib/test/escript_SUITE_data/unicode5 b/lib/stdlib/test/escript_SUITE_data/unicode5
new file mode 100755
index 0000000000..e95da3361d
--- /dev/null
+++ b/lib/stdlib/test/escript_SUITE_data/unicode5
@@ -0,0 +1,12 @@
+#!/usr/bin/env escript
+%% -*- erlang -*-
+-export([main/1]).
+%% -*- encoding:latin-1 -*-
+
+main(_) ->
+    ok = io:setopts([{encoding,unicode}]),
+    Bin1 = <<"örn_Ѐ שלום-שלום+של 日本語">>,
+    L = [246,114,110,95,1024,32,1513,1500,1493,1501,45,1513,1500,1493,
+         1501,43,1513,1500,32,26085,26412,35486],
+    L = unicode:characters_to_list(Bin1, utf8),
+    ok.
diff --git a/lib/stdlib/test/escript_SUITE_data/unicode6 b/lib/stdlib/test/escript_SUITE_data/unicode6
new file mode 100755
index 0000000000..8027a2a08c
--- /dev/null
+++ b/lib/stdlib/test/escript_SUITE_data/unicode6
@@ -0,0 +1,13 @@
+#!/usr/bin/env escript
+%% -*- erlang -*-
+%%! +pc unicode
+-export([main/1]).
+%% -*- encoding:utf-8 -*-
+
+main(_) ->
+    ok = io:setopts([{encoding,unicode}]),
+    Bin1 = <<"örn_Ѐ שלום-שלום+של 日本語">>,
+    L = [246,114,110,95,1024,32,1513,1500,1493,1501,45,1513,1500,1493,
+         1501,43,1513,1500,32,26085,26412,35486],
+    L = unicode:characters_to_list(Bin1, utf8),
+    ok.