[gawk-diffs] [SCM] gawk branch, constants, updated. 0bb46533b062b76ec2ca22559488925c979c28fb

[Arnold Robbins]

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- Log -----------------------------------------------------------------
http://git.sv.gnu.org/cgit/gawk.git/commit/?id=0bb46533b062b76ec2ca22559488925c979c28fb

commit 0bb46533b062b76ec2ca22559488925c979c28fb
Author: Arnold D. Robbins <address@hidden>
Date:   Fri Mar 15 14:07:13 2013 +0200

    Add README.constants.

diff --git a/README.constants b/README.constants
new file mode 100644
index 0000000..4c2ff6a
--- /dev/null
+++ b/README.constants
@@ -0,0 +1,34 @@
+Fri Mar 15 14:03:02 IST 2013
+============================
+
+This branch represents a failed experiment, which was to add defined
+constants to gawk.
+
+It started from the extension facility, where adding constants analogous
+to those of C header files for library routines (like fts(3)) seemed like
+a good idea.
+
+Then the question was raised: extensions can do something that awk code
+cannot?  So this facility was removed.  During the discussion though,
+the ":=" operator was suggested as an alternative method for creating
+constants.
+
+I tried to add the extension facility back, and then add code for ":=".
+But there were too many weirdnesses, like what should happen for special
+variables, and should ":=" only work for undefined variables? Also,
+simple code like this didn't work:
+
+       BEGIN {
+               x := 5
+               print x
+               y = x           # constness came across here
+               print y
+               y++             # this blows up
+               print y
+       }
+
+Since it's a lot of weird code for not very much benefit, I am
+abandoning further development of this idea.
+
+Arnold Robbins
address@hidden

http://git.sv.gnu.org/cgit/gawk.git/commit/?id=b4704536be4770c4a4aa4354282cd8d9d2f19531

commit b4704536be4770c4a4aa4354282cd8d9d2f19531
Merge: 24f5cec 778977a
Author: Arnold D. Robbins <address@hidden>
Date:   Fri Mar 15 14:02:22 2013 +0200

    Merge branch 'master' into constants

diff --cc doc/gawk.info
index 5695c7d,5119236..a203402
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@@ -31935,509 -31921,508 +31936,509 @@@ Ref: Names-Footnote-15190
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  End Tag Table

-----------------------------------------------------------------------

Summary of changes:
 README.constants |   34 ++
 doc/ChangeLog    |    4 +
 doc/gawk.info    | 1031 +++++++++++++++++++++++++++---------------------------
 doc/gawk.texi    |    6 +-
 4 files changed, 557 insertions(+), 518 deletions(-)
 create mode 100644 README.constants


hooks/post-receive
-- 
gawk