There are some unicode typesetting enhancements coming down the road: #18357: Unicode Art #18270: Print matrices using unicode large delimiters (on demand)
On Wednesday, May 6, 2015 at 7:03:23 PM UTC+2, Bill Page wrote: > > Perhaps this is more specifically related to Sage. Anyone have any > suggestions or comments? Has the issue of sending unicode to external > programs been discussed before? > > Is there a better way to implement this without having to modify a > common python site package? > > Is there a good way to make this specific to just those interfaces > that can support unicode? > > > ---------- Forwarded message ---------- > From: Bill Page <bill...@newsynthesis.org <javascript:>> > Date: 5 May 2015 at 23:02 > Subject: Re: Unicode in Sage Worksheets > To: sage-...@googlegroups.com <javascript:> > > > As suggested here: > > http://sourceforge.net/p/pexpect/bugs/28/ > > the following patch to the sage python site package pexpect.py > > ~$ diff -au > /usr/local/sage/sage-6.5/local/lib/python2.7/site-packages/pexpect.py > pexpectu.py > --- /usr/local/sage/sage-6.5/local/lib/python2.7/site-packages/pexpect.py > 2015-02-23 23:01:50.000000000 +0000 > +++ pexpectu.py 2015-05-06 02:26:19.798935537 +0000 > @@ -666,7 +666,7 @@ > if self.logfile != None: > self.logfile.write (str) > self.logfile.flush() > - c = os.write(self.child_fd, str) > + c = os.write(self.child_fd, str.encode("utf-8")) > return c > > def sendline(self, str=''): > > -- > > and calling it from sage 'expect.py' like this: > > ~$ diff -au expect.py.orig expect.py > --- expect.py.orig 2015-05-06 02:53:17.150953375 +0000 > +++ expect.py 2015-05-06 02:50:25.410955076 +0000 > @@ -55,8 +55,8 @@ > # For reasons I don't understand, pexpect2.1 is much > # worse than pexpect 2.0 for everything Sage does. > ######################################################## > -import pexpect > -from pexpect import ExceptionPexpect > +import pexpectu as pexpect > +from pexpectu import ExceptionPexpect > from sage.interfaces.interface import Interface, InterfaceElement, > InterfaceFunction, InterfaceFunctionElement, AsciiArtString > > from sage.structure.element import RingElement > > -- > > enables sending unicode characters to FriCAS from a Sage worksheet as > shown here: > > > https://cloud.sagemath.com/projects/4bc39013-7b65-4a65-9d3d-bec4a4ce4d5a/files/fricas-CR%20Examples.sagews > > > Does anyone have a suggestion for how to package this for Sage and or > Sage Math Cloud? Is > > str.encode("utf-8") > > likely to cause errors in interfaces to other programs? > > Bill Page. > > > On 5 May 2015 at 17:40, Bill Page <bill...@newsynthesis.org <javascript:>> > wrote: > > I tried to use a unicode character in the following worksheet: > > > > > https://cloud.sagemath.com/projects/4bc39013-7b65-4a65-9d3d-bec4a4ce4d5a/files/fricas-CR%20Examples.sagews > > > > > The cell input is > > > > axialratio(expr,z)==(1-Abs(μ(expr,z)))/(1+Abs(μ(expr,z))) > > > > i.e. containing the Greek letter \mu > > > > This is being sent to FriCAS to execute. FriCAS support the use of > > unicode like this and in fact I can use it in a SMC terminal with > > FriCAS. But in a Sage Worksheet in SMC I get the following error: > > > > Error in lines 1-1 > > Traceback (most recent call last): > > File > "/projects/4bc39013-7b65-4a65-9d3d-bec4a4ce4d5a/.sagemathcloud/sage_server.py", > > > > line 879, in execute > > exec compile(block+'\n', '', 'single') in namespace, locals > > File "", line 1, in <module> > > File > "/projects/4bc39013-7b65-4a65-9d3d-bec4a4ce4d5a/.sagemathcloud/sage_server.py", > > > > line 920, in execute_with_code_decorators > > code = code_decorator(code) > > File "", line 3, in fricas_md > > File "./expect.py", line 1224, in eval > > for L in code.split('\n') if L != '']) > > File "./axiom.py", line 440, in _eval_line > > E.sendline(line) > > File > "/usr/local/sage/sage-6.5/local/lib/python2.7/site-packages/pexpect.py", > > line 676, in sendline > > n = self.send(str) > > File > "/usr/local/sage/sage-6.5/local/lib/python2.7/site-packages/pexpect.py", > > line 669, in send > > c = os.write(self.child_fd, str) > > UnicodeEncodeError: 'ascii' codec can't encode character u'\u03bc' in > > position 27: ordinal not in range(128) > > > > -- > > > > Is this a limitation of the pexpect interface? Is there some way around > this? > > > > Bill. > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
