- Update to tcsh 6.23.02
9. Make the \U escape up to 8 hex digits.
8. V6.23.01 - 20211209
7. add \cc and \Uhhh, and document escape sequences
6. add $'string with escapes' ("dollar-single-quotes") (Kimmo Suominen)
5. don't glob the filetest builtin arguments twice
4. remove the duplicate echo escape parsing code and use parseescape
3. add \x{hh} \xhh \uhhh (H.Merijn Brand)
2. fix and document ln=target
1. Merge in patches from pkgsrc:
- Modernize the installation targets so that they use INSTALL_DATA,
INSTALL_PROGRAM, and MKDIR_P.
- Enable SYSMALLOC and SHORT_STRINGS on NetBSD.
- Enable NO_FIX_MALLOC and SHORT_STRINGS on OpenBSD.
- Port patches
* tcsh-6.17.06-dspmbyte.dif
* tcsh-6.18.03-catalogs.dif
* tcsh-6.21.00.dif