From 85bbc1f634f19bd244831f545a1c3f8f20a0acd9 Mon Sep 17 00:00:00 2001
From: Jeff Bezanson <jeff.bezanson@gmail.com>
Date: Thu, 30 Jul 2015 12:42:27 -0400
Subject: [PATCH] Revert "indent, unindent: default tab width = 4."

This reverts commit 6c71b13e607a4bce8b02154982dbb13dc7f29dce.
---
 base/LineEdit.jl   |  4 ++--
 base/REPL.jl       |  4 ++--
 base/strings/io.jl | 12 +++++-------
 test/strings/io.jl | 30 +++++++++---------------------
 4 files changed, 18 insertions(+), 32 deletions(-)

diff --git a/base/LineEdit.jl b/base/LineEdit.jl
index 61666c015ab72..6387b6ffb7634 100644
--- a/base/LineEdit.jl
+++ b/base/LineEdit.jl
@@ -1433,8 +1433,8 @@ AnyDict(
         input = readuntil(ps.terminal, "\e[201~")[1:(end-6)]
         input = replace(input, '\r', '\n')
         if position(buffer(s)) == 0
-            indent = Base.indentation(input)[1]
-            input = Base.unindent(input[(indent+1):end], indent)
+            indent = Base.indentation(input; tabwidth=4)[1]
+            input = Base.unindent(input[(indent+1):end], indent; tabwidth=4)
         end
         edit_insert(s, input)
     end,
diff --git a/base/REPL.jl b/base/REPL.jl
index 5ffe0408e2108..fc3af9c07d565 100644
--- a/base/REPL.jl
+++ b/base/REPL.jl
@@ -788,8 +788,8 @@ function setup_interface(repl::LineEditREPL; hascolor = repl.hascolor, extra_rep
             input = readuntil(ps.terminal, "\e[201~")[1:(end-6)]
             input = replace(input, '\r', '\n')
             if position(LineEdit.buffer(s)) == 0
-                indent = Base.indentation(input)[1]
-                input = Base.unindent(lstrip(input), indent)
+                indent = Base.indentation(input; tabwidth=4)[1]
+                input = Base.unindent(lstrip(input), indent; tabwidth=4)
             end
             buf = copy(LineEdit.buffer(s))
             edit_insert(buf,input)
diff --git a/base/strings/io.jl b/base/strings/io.jl
index 1672a9773fb22..09e7ec411e695 100644
--- a/base/strings/io.jl
+++ b/base/strings/io.jl
@@ -196,13 +196,12 @@ macro b_str(s); :($(unescape_string(s)).data); end
 ## multiline strings ##
 
 """
-Calculate the width of leading blank space, and also return if string is blank.
-Assumes a tab width of 4, which is standard for Julia code.
+Calculate the width of leading blank space, and also return if string is blank
 
 ### Returns:
 * (width of leading whitespace, flag if string is totally blank)
 """
-function indentation(str::AbstractString; tabwidth=4)
+function indentation(str::AbstractString; tabwidth=8)
     count = 0
     for ch in str
         if ch == ' '
@@ -217,13 +216,12 @@ function indentation(str::AbstractString; tabwidth=4)
 end
 
 """
-Removes leading indentation from string.
-Assumes a tab width of 4, which is standard for Julia code.
+Removes leading indentation from string
 
 ### Returns:
-* `ASCIIString` or `UTF8String` of multiline string, with leading indentation of `indent` removed.
+* `ASCIIString` or `UTF8String` of multiline string, with leading indentation of `indent` removed
 """
-function unindent(str::AbstractString, indent::Int; tabwidth=4)
+function unindent(str::AbstractString, indent::Int; tabwidth=8)
     indent == 0 && return str
     pos = start(str)
     endpos = endof(str)
diff --git a/test/strings/io.jl b/test/strings/io.jl
index 5fa0183e8c3ef..1677094d93f9e 100644
--- a/test/strings/io.jl
+++ b/test/strings/io.jl
@@ -237,28 +237,16 @@ print_joined(myio, "", "", 1)
 # 11659
 # The indentation code was not correctly counting tab stops
 @test Base.indentation("      \t") == (8, true)
-@test Base.indentation("  \tfoob") == (4, false)
-@test Base.indentation(" \t \t")   == (8, true)
+@test Base.indentation("  \tfoob") == (8, false)
+@test Base.indentation(" \t \t")   == (16, true)
 
 @test Base.unindent("\tfoo",0) == "\tfoo"
-@test Base.unindent("\tfoo",2) == "  foo"
-@test Base.unindent("\tfoo",4) == "foo"
+@test Base.unindent("\tfoo",4) == "    foo"
 @test Base.unindent("    \tfoo",4) == "    foo"
-@test Base.unindent("\t\n    \tfoo",2) == "  \n      foo"
-@test Base.unindent("\t\n    \tfoo",4) == "\n    foo"
-@test Base.unindent("\t\n    \tfoo",6) == "\n  foo"
-@test Base.unindent("\t\n    \tfoo",8) == "\nfoo"
-@test Base.unindent("\tfoo\tbar",2) == "  foo bar"
-@test Base.unindent("\tfoo\tbar",4) == "foo bar"
-@test Base.unindent("\n\tfoo",2) == "\n  foo"
-@test Base.unindent("\n\tfoo",4) == "\nfoo"
-@test Base.unindent("\n    \tfoo",2) == "\n      foo"
+@test Base.unindent("\t\n    \tfoo",4) == "    \n    foo"
+@test Base.unindent("\tfoo\tbar",4) == "    foo     bar"
+@test Base.unindent("\n\tfoo",4) == "\n    foo"
 @test Base.unindent("\n    \tfoo",4) == "\n    foo"
-@test Base.unindent("\n    \tfoo",6) == "\n  foo"
-@test Base.unindent("\n    \tfoo",8) == "\nfoo"
-@test Base.unindent("\n\t\n    \tfoo",2) == "\n  \n      foo"
-@test Base.unindent("\n\t\n    \tfoo",4) == "\n\n    foo"
-@test Base.unindent("\n\t\n    \tfoo",6) == "\n\n  foo"
-@test Base.unindent("\n\t\n    \tfoo",8) == "\n\nfoo"
-@test Base.unindent("\n\tfoo\tbar",2) == "\n  foo bar"
-@test Base.unindent("\n\tfoo\tbar",4) == "\nfoo bar"
+@test Base.unindent("\n\t\n    \tfoo",4) == "\n    \n    foo"
+@test Base.unindent("\n\tfoo\tbar",4) == "\n    foo     bar"
+