[DAVEologist]

What are characters that would cause errors when tried echoing?
For example...

Code

echo Hello! I love putting |'s on my thread titles!
pause

It would close automatically because of the pipe, (|) that I put.
So that's only one character. Any other characters?

[AMDjack]

What are characters that would cause errors when tried echoing?
For example...

Code

echo Hello! I love putting |'s on my thread titles!
pause

It would close automatically because of the pipe, (|) that I put.
So that's only one character. Any other characters?

To get past that put a ^ infront of it IE: ^| and it will work.

[WOLGA]

He trying to figure out the characters that give the error.

try echoing these

:[]zxcvbnm,.'/@!\#$%^&*()_;{}<>"?+àáâãäåæçèéêëìíîïðñòóôõöøœùúûüýÿþßšžāăąćċčďēěėęğġģħīįiıijķĺļľłńņňőŕřśşťūůűųźżƒdždzțαβγδεζηθικλμνξοπρστυφχψωάέήίόύώϊϋΐΰς΄΅абвгдеёжзийклмнопрстуфхцчшщъыьэюяÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØŒÙÚÛÜÝŸÞߊŽĀĂĄĆĊČĎĒĚĖĘĞĠĢĦĪĮİIIJĶĹĻĽŁŃŅŇŐŔŘŚŞŤŪŮŰŲŹŻƒDžDzȚΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩΆΈΉΊΌΎΏΪΫΐΰςАБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ¿¡←→↑↓√@§¶†‡|¦–—¤$¢€£¥™©®×÷=±∞ƒºª«»~„"“”^ˇ˘˙¸˛˜′″µ°¹²³♭♪•…¬¯%‰¼½¾⇒⇔●◆*****▲▼☆★♀♂

[DAVEologist]

He trying to figure out the characters that give the error.

try echoing these

:[]zxcvbnm,.'/@!\#$%^&*()_;{}<>"?+àáâãäåæçèéêëìíîïðñòóôõöøœùúûüýÿþßšžāăąćċčďēěėęğġģħīįiıijķĺļľłńņňőŕřśşťūůűųźżƒdždzțαβγδεζηθικλμνξοπρστυφχψωάέήίόύώϊϋΐΰς΄΅абвгдеёжзийклмнопрстуфхцчшщъыьэюяÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØŒÙÚÛÜÝŸÞߊŽĀĂĄĆĊČĎĒĚĖĘĞĠĢĦĪĮİIIJĶĹĻĽŁŃŅŇŐŔŘŚŞŤŪŮŰŲŹŻƒDžDzȚΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩΆΈΉΊΌΎΏΪΫΐΰςАБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ¿¡←→↑↓√@§¶†‡|¦–—¤$¢€£¥™©®×÷=±∞ƒºª«»~„"“”^ˇ˘˙¸˛˜′″µ°¹²³♭♪•…¬¯%‰¼½¾⇒⇔●◆*****▲▼☆★♀♂

Uhhh... can you please choose non-unicode text? I can't save my Batch file with those.

[SoulByte]

The characters are these: ^<>%&|

The quote character " can also cause trouble in certain circumstances though not in echo.
The following script would crash:

Code

set abc=hello"world
if "%abc%"=="bla" echo Bla

Parentheses () can also ruin grouping of commands.
This script would also crash as the ) in the echo would end the grouping before the programmer had intended.

Code

if 1==1 (
  echo Hello ) World
  pause>nul
  )

And you can't display ! with delayedexpansion enabled.

Code

setlocal enabledelayedexpansion
echo Hello World!

You can use the escape character ^ to display these special characters (except !).

[DAVEologist]

The characters are these: ^<>%&|

The quote character " can also cause trouble in certain circumstances though not in echo.
The following script would crash:

Code

set abc=hello"world
if "%abc%"=="bla" echo Bla

Parentheses () can also ruin grouping of commands.
This script would also crash as the ) in the echo would end the grouping before the programmer had intended.

Code

if 1==1 (
  echo Hello ) World
  pause>nul
  )

And you can't display ! with delayedexpansion enabled.

Code

setlocal enabledelayedexpansion
echo Hello World!

You can use the escape character ^ to display these special characters (except !).

Cool. Very useful indeed. :)
Thanks for the share!

[G T X]

And you can't display ! with delayedexpansion enabled.

You can use the escape character ^ to display these special characters (except !).

You can display the exclamation mark by escaping it three times.

Code

@echo off
setlocal enabledelayedexpansion
echo Hello World^^^!

[White Light]

You can display the exclamation mark by escaping it three times.

Code

@echo off
setlocal enabledelayedexpansion
echo Hello World^^^!

I tried that before and it didn't work for me...the only way I could get it to work was to disable setlocal.

[SIM-1073426]

You can display the exclamation mark by escaping it three times.

Code

@echo off
setlocal enabledelayedexpansion
echo Hello World^^^!

Actually, you only need to escape it two times.

Code

@echo off
setlocal enabledelayedexpansion
echo Hello World^^!

[White Light]

Actually, you only need to escape it two times.

Code

@echo off
setlocal enabledelayedexpansion
echo Hello World^^!

Since the normal functionality of the caret would cause it to protect itself, then it later has the ability to protect the ! then I guess that would be the easiest solution. Any more than 3 would cause extra carets to be displayed, and the third would do nothing (as it doesn't normally show up when it is protecting something).